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Violent tornado devastates Moore, Oklahoma

By: Dr. Jeff Masters, 12:48 AM GMT on May 21, 2013

A massive and violent tornado at least a mile wide smashed through Moore, Oklahoma near 3 pm CDT Monday, causing catastrophic damage along a 20-mile long path. The National Weather Service in Norman, Oklahoma has rated the tornado at least an EF-4 (166 - 200 mph winds), and detailed damage surveys may upgrade this rating to the top-end EF-5 level in the coming days. Damage was extreme and covered a huge area, and many buildings swept away down to their foundations. The tornado was on the ground for 40 minutes, from 2:56 - 3:36 pm CDT, and a tornado warning for the storm was issued at 2:40 pm CDT, sixteen minutes before it touched down. The debris ball from the tornado, as seen on Doppler radar, expanded to over two miles in diameter, and debris was carried over 100 miles from Moore. The National Weather Service office in Tulsa, Oklahoma reported at 4:13 pm CDT that they were "seeing reports of light tornado debris falling in the Tulsa metro area again this evening, likely from the Moore area." Tulsa is 100 miles east-northeast of Moore.


Figure 1. The news helicopter from kfor.com caught this image of the shocking near-total destruction of a huge area of Moore, Oklahoma, on May 20, 2013.


Figure 2. Radar reflectivity image taken at 3:06 pm CDT May 20, 2013 of the supercell thunderstorm that spawned the Moore, Oklahoma tornado. A classic "hook echo" terminates in a sphere of colors with high-reflectivity purple at its core, the signature of a "debris ball" of debris hurled into the air by a violent tornado.


Figure 3. Terminal Doppler Weather Radar velocity image taken at 3:06 pm CDT May 20, 2013 of the supercell thunderstorm that spawned the Moore, Oklahoma tornado. Note the couplet of dark red colors right next to dark blues, showing that the air was moving both towards the radar and away from it within a short distance, indicating a tight rotation of the tornado's parent mesocyclone. The velocity folding inside this couplet is extremely unusual to see in Doppler radar data and shows that the winds were so fast, the radar misidentified their speed. This, along with the extremely low beam height (0.5°), suggests that the radar was scanning the upper parts of the tornado and its immediate environment. Thanks go to wunderground's tornado expert, Dr. Rob Carver, for annotating this image.

Moore tornado likely to be one of the five most damaging tornadoes in history
Moore has the unenviable distinction of having previously experienced the 4th costliest tornado in world history, the notorious May 3, 1999 Bridgecreek-Moore EF-5 tornado. There have been only six billion-dollar (2011 dollars) tornadoes in history:

1) Joplin, Missouri, May 22, 2011, $2.8 billion
2) Topeka, Kansas, June 8, 1966, $1.7 billion
3) Lubbock, Texas, May 11, 19780, $1.5 billion
4) Bridge Creek-Moore, Oklahoma, May 3, 1999, $1.4 billion
5) Xenia, Ohio, April 3, 1974, $1.1 billion
6) Omaha, Nebraska, May 6, 1975, $1 billion

The May 3, 1999 Bridge Creek-Moore tornado killed 36 people and injured 583. It damaged or destroyed 8132 homes, 1041 apartments, 260 businesses, 11 public buildings and seven churches. According to rough estimates of the size of the damaged area made by helicopters operated by news9.com and kfor.com, the damage footprint from the May 20, 2013 tornado is easily twice as large. I expect that after the damage tally from the May 20 tornado is added up, Moore will hold two of the top five spots on the list of most damaging tornadoes in history, and the May 20 tornado may approach the Joplin tornado as the costliest twister of all-time.


Figure 4. Comparison of the tracks of the May 3, 1999 and May 20, 2013 tornadoes in Moore, Oklahoma. Both tornadoes caused near-total destruction along a significant portion of their paths. Image credit: ‪NWS Norman, #Okwx‬ ‪pic.twitter.com/4BmUWIyNbo‬


Video 1. Short storm chaser clip of the May 20, 2013 Moore, Oklahoma tornado. The video is notable for the large amount of flying debris seen swirling around the funnel.

I urge you to give generously to the victims of this tragedy, whether through your monetary donations to disaster relief organizations like redcross.org or portlight.org, or with your prayers to those afflicted.

Jeff Masters

Tornado

The views of the author are his/her own and do not necessarily represent the position of The Weather Company or its parent, IBM.

Reader Comments

Quoting Waltanater:
Those people CHOSE to live there...Do these people not KNOW that these outbreaks occur during this time of year?...Did they know about the specific warnings of this week or weekend? So many people on this blog did! Do they KNOW that their schools do not have shelters!? Yet they CHOSE to send their kids to school during such conditions. Someone is to BLAME no? Maybe not the parents but maybe the school systems...maybe a little of both? Where is the protection for the kids? Maybe if they stayed home they would be safe and alive. Do not assume I do not have compassion...I do, probably more than you do. Who should be blamed here Eric?? C'mon "spit" it out!

First: thanks for making fun of my last name, I've never heard that one before. Very original.

Second: No, nobody gets the blame for severe weather outbreaks, ever. It is quite clear you don't really know what you're talking about. An EF-4/5 is destructive, you may be finding out soon that those with tornado shelters in the direct path may not have fared any better than those without. You're saying that if they stayed home that they would be safe, but you apparently haven't seen the pictures of the entire area around the school. I'll give you a hint: it is gone, all of it. These parents that lost their children likely have no house to return to, they not only lost their children but lost everything they owned as well. I'm just thankful that they are too busy being productive and helping their community to know that some jackass is saying that it is their fault that their children and all of their possessions have been lost. I hope that you never lose a loved one.
Quoting Waltanater:
Those people CHOSE to live there...Do these people not KNOW that these outbreaks occur during this time of year?...Did they know about the specific warnings of this week or weekend? So many people on this blog did! Do they KNOW that their schools do not have shelters!? Yet they CHOSE to send their kids to school during such conditions. Someone is to BLAME no? Maybe not the parents but maybe the school systems...maybe a little of both? Where is the protection for the kids? Maybe if they stayed home they would be safe and alive. Do not assume I do not have compassion...I do, probably more than you do. Who should be blamed here Eric?? C'mon "spit" it out!


I assume some, if not many, have lived in OKC all their lives, and not everyone has the means to move. And where does everyone in every weather disaster prone area move to? The whole mid-west and south, the whole atlantic and Gulf coast would all need to move too. Can't go to California, earthquakes there, S/W droughts most the time. There's not many places in the US without some common form of natural disaster, so a lot of people to move into some small areas if everyone CHOSE to live somewhere without them and could move. And anyway, you never know when/where a tornado would form, a lot of schools would be closed quite often if just going by the fact severe thunderstorms are forecast. Sorry, but it's just a silly comment to say they ALL CHOSE to live in a tornado region, so does most the plains and South.
Quoting Waltanater:
Good story. I can tell you are well ahead of the game. Stay weather-alert for your little one and yourself. Have you considered moving away from that area?


Well ahead of the game ??? :) I heard about the tornado seconds before I heard the tornado itself (I won't soon forget that sound, either.) Mine is a cautionary tale- even if you think you live in a safe area, you still need to be diligent about the weather.

If you read about the economy and health in WV, you would stay away for certain. Read about the natural disasters, and you will stay here for a long while. Not much happens here (no kidding!)
Quoting MahFL:


Individual tornados are not imminent, they can form quite quickly or slowly at any time of day. You can't stop normal life because tornados might occur, you have to deal with them when they occur, as best you can.
Schools should close during expected outbreaks and severe weather in known areas and during peak tornado season based on forecasting. This is the logical thing to do. Is life for you "business as usual" during a Hurricane Warning for your specific area?
Quoting MahFL:
Why is Levi in Norman Ok ?
Good morning. Not sure but I think he is doing an internship there.
Quoting EricSpittle:

What I am saying is that the NWS can only say "this x00 square mile area is at a severe risk" and if they shut down the entire area everytime the risk moves to moderate it starts to look like the boy who cried wolf and people start ignoring warnings.


Exactly -- a forecast tornado outbreak can't be treated the same as a hurricane forecast. Growing up in Tornado Alley, school was disrupted enough sitting in the hallways during actual warnings that never played out into a tornado in my town -- if you applied the rule that everything shut down for an outbreak forecast you'd kill the whole region economically.
Quoting odinslightning:
oh and btw my 2 cents....i hope that this event will cause all large public buildings have an underground shelter in tornado alley.....i am shocked that a school could be zoned in tornado alley without providing an underground shelter system in the foundation to prevent mass death like we have seen today.....


It is a great idea, but this country seems intent on spending (wasting) countless billions of dollars overseas on wars we were lied into and conflicts we drag ourselves into. Updating our own infrastructure? Making our buildings safer? Preparing our coastlines for sea level rise or our heartlands from ever increasingly dangerous storms? Providing our own citizens healthcare? NOPE! WAR WAR WAR
Been discovered that meteors hit the moon a lot more than realized

Quoting AtHomeInTX:


Welcome to Texas :)
Thought that was supposed to be, "Welcome to TEXAS"... lol

And for all those welcoming Levi to the South, I can only reply... not far South enough.... ;o)

I gotta say, Levi, you picked a dramatic time to visit Norman.

Link my new blog about tornado devastates Moore, Oklahoma
Quoting EricSpittle:

I don't disagree, and I'm not saying the NWS did not do a terrific job at forecasting this event. What I am saying is that the NWS can only say "this x00 square mile area is at a severe risk" and if they shut down the entire area everytime the risk moves to moderate it starts to look like the boy who cried wolf and people start ignoring warnings. It is a fine line to walk, and there is no "right" answer other than building stronger shelters which costs a lot of money. Blaming people is not the answer, and doesn't help, especially in this situation where everything around the school was leveled as well.


This. A thousand times this.

There are some things where our level of science and the need to protect the public just can't quite mesh yet. We don't have the ability to predict where and when with precision a powerful tornado will strike with more than 20 minutes lead time. Heck, it was just a couple nights ago that Wichita was looking like it was going to get slammed by a monster that suddenly dissipated.

If you want to make the public complacent and annoyed, go ahead and overprotect them. Send everyone home every time the forecast models indicate a significant risk. Then when the forecast is a bust, or the activity stays one county or one state over (this large tornado directly affected what, 60 square miles of the thousands of square miles that had been modeled at moderate risk?), what happens? The public gets pissed. People have short memories. The NWS went to polygonal, focused storm warnings in part because people started ignoring storm sirens when the tornadic cell was in the opposite corner of the county. The NWS started making strongly-worded warnings in part because people started ignoring the risks when the warnings occurred frequently while they experienced no direct impact.

Sometimes, [stuff] happens. You can't plan for every contingency. Someone is bound to win the lottery eventually, despite the miniscule odds. Unfortunately, this particular drawing was for an EF4+ monster tornado. There's just nothing more to be done. There's no one to blame. And there's no way to keep everyone safe from a high-end disaster. EVERYWHERE has risks associated with it. It's just part of living.
523. SLU
The tornado season has been relatively quiet this year so far but this one devastating tornado has ruined the entire season. Very much the same way that one major hurricane can turn an otherwise quiet hurricane season into a nightmare for millions of people.

Quoting Waltanater:
Schools should close during expected outbreaks and severe weather in known areas and during peak tornado season based on forecasting. This is the logical thing to do. Is life for you "business as usual" during a Hurricane Warning for your specific area?


Really? So basically, half of the sate of Oklahoma would have had schools closed on Monday. And what about all the single working parents (like me) who would have to stay home with them? In reality, most of those children would end up at day care all day - where we have the same problem. But of course, according to your logic, the whole state should just shut down anytime there is a forecast for severe weather. Heck, we in OK during the spring would never be able to work. And our kids would never be in school

Really? Think before you post, and cut out the exaggerated outrage.
I'm very disappointed that people is already getting political and we haven't passed the 24 hours mark since the storm. Most of people on here only show up to take advantage of this tragedy to make their points. That is just weak and selfish of y'all.
Quoting RitaEvac:
These medical examiners are something else, during the West TX plant explosion it was way overstated about how many were dead there too, now the same thing is happening with this event. For somebody to be in this profession they sound pretty stupid.


Quoting MrstormX:


I know where I live, coroners are an elected post...and you don't even need any medical training to get the job. Thankfully we elected doctors, and actually my general care doctor is also the county coroner.


Usually in disasters of these scales, the fatality numbers are usually lower than what is first reported; Also, with the amount of wounded people that come from large disasters like this, I believe that the corner was most likely providing medical aid to the wounded, and not counting bodies
Quoting daddyjames:


Really? So basically, half of the sate of Oklahoma would have had schools closed on Monday. And what about all the single working parents (like me) who would have to stay home with them? In reality, most of those children would end up at day care all day - where we have the same problem. But of course, according to your logic, the whole state should just shut down anytime there is a forecast for severe weather. Heck, we in OK during the spring would never be able to work. And our kids would never be in school

Really? Think before you post, and cut out the exaggerated outrage.

News flash - even "home-schooled" kids would have been killed in this storm.
Florida higher on the list than one might expect. Only 2 spots down from Oklahoma. Of course, we don't get those big suckers like those in the Plains. I don't think there's ever been an EF5 or F5 in this state (please correct me if I'm wrong).
Quoting mikatnight:
I know NSSL did this map, but it's outdated. They also missed Dixie Alley as hot spot for violent tornadoes as well. I'm having hard time believing that map.
Quoting mikatnight:
Florida higher on the list than one might expect. Only 2 spots down from Oklahoma. Of course, we don't get those big suckers like those in the Plains. I don't think there's ever been an EF5 or F5 in this state (please correct me if I'm wrong).
You're correct, although they got couple of F4/EF4 before. It's still bad.
Sorry, my post should say:

The tornado was on the ground for 40 minutes, from 2:56 - 3:36 pm CDT.

Working on a new post, but have been slowed by doing many interviews.

Jeff Masters
Quoting Bluestorm5:
I'm very disappointed that people is already getting political and we haven't passed the 24 hours mark since the storm. Most of people on here only show up to take advantage of this tragedy to make their points. That is just weak and selfish of y'all.

It began last night and is continuing today. Unreal. Think I need a fews days off from here.
Quoting JTDailyUpdate:




Usually in disasters of these scales, the fatality numbers are usually lower than what is first reported; Also, with the amount of wounded people that come from large disasters like this, I believe that the corner was most likely providing medical aid to the wounded, and not counting bodies
Usually... I think Joplin and April 27 storms is the exception that I know off. I still remembered how Joplin's death toll was first reported as 9 deaths...
Quoting Bluestorm5:
I know NSSL did this map, but it's outdated. They also missed Dixie Alley as hot spot for violent tornadoes as well. I'm having hard time believing that map.


Assume you're referring to post #521?

You do realize that's just for the month of May (1921-1995)?
Other than that, I defer to your expertise.
Quoting mikatnight:
Florida higher on the list than one might expect. Only 2 spots down from Oklahoma. Of course, we don't get those big suckers like those in the Plains. I don't think there's ever been an EF5 or F5 in this state (please correct me if I'm wrong).


That's a bit skewed too when you consider the size of Texas vs. Wyoming, Oklahoma, Kansas, etc.
Quoting JeffMasters:
Sorry, my post should say:

The tornado was on the ground for 40 minutes, from 2:56 - 3:36 pm CDT.

Working on a new post, but have been slowed by doing many interviews.

Jeff Masters


Dude's a rock-star now. Go get 'em Doc!
am looking forword too the ture rateing on this nado today it is vary likey it will be upgrade too EF5
Morning water vapor imagery shows a well-defined upper trough over
the nm/Texas border. This feature is forecast to track eastward into
the Southern Plains today...setting the stage for another active day
of severe thunderstorms.


Scattered strong thunderstorms are ongoing this morning across
southern OK...in a region of low level warm advection and ahead of a
surface cold front. These storms appear likely to increase in
coverage through the morning...spreading southeastward into North Texas
and western Arkansas. Ample low level moisture and moderate cape values
will pose a risk of large hail and locally damaging winds.


By early afternoon...strong heating south of the storms will promote
further intensification across much of north central and northeast
Texas. Steep middle level lapse rates and dewpoints near 70f will yield
MLCAPE values of 2000+ j/kg. As the upper trough
approaches...strengthening vertical shear suggests a risk of
discrete supercells capable of very large hail and tornadoes.


The activity is forecast to congeal into lines/clusters of storms by
early evening spreading rapidly eastward into AR/la. These storms
will likely have an enhanced risk of widespread damaging winds.


..MO/Illinois northward into lower Michigan...
Multiple bands of thunderstorms have affected the middle MS valley
overnight. These storms have weakened instability and are providing
uncertainty regarding the coverage/intensity of thunderstorms later
today. Have maintained the slight risk area...but have generally
decreased probabilities in these regions. The area that appears
most likely to see isolated severe storms later today would be
across lower Michigan as a shortwave trough now over MO/Illinois rotates
northeastward.


.Hart/leitman.. 05/21/2013
It is just a guess on my part, but we are all guilty of wanting to know "the numbers" as soon as possible after something of this magnitude happens anywhere, as if knowing the numbers somehow explains the devastation. So my thinking is that amid the pandemonium the medical examiner was pressured for a count. He likely counted the ones already received, and then added to the count the number he expected to receive based on initial calls from the field. Doubtless that is where double-counting occurred. T
he numbers will surely rise.
Quoting SouthernIllinois:

Yep. Nice post before. The irony that Moore in 1999 was the first one the SPC used an emergency. And the probability of two EF5's crossing the same path in a decade span. Just chilling stuff.
SPC does not issue warnings. As I stated here a couple days ago when the subject of overpasses came up and I linked the info on overpasses in 1999, May 3, 1999 was the first time NWS used TORNADO EMERGENCY in a warning. From the TX border to NE OK, I44 is a severe storm corridor.
For those of you who are speculating on and second-guessing decisions made and not made, I refer you to the tornado watch from May 20, 2013. The severe parameters indicated only a "low" risk for EF2-plus. I am sure I am not the only one who made or changed storm prep decisions based on that. Sunday when Carney, Shawnee and other places were hit, the EF2plus risk was moderate.

Some schools in Oklahoma have underground shelters. Some do not. I visited a little place near here yesterday called Jerusalem, OK. It's the site of a one room school house from the old days, about a ten acre park. You can walk up and touch the concrete-covered underground structure that served as a storm shelter. Lots of talk since Greenburg I think it was, about not sheltering kids in school hallways, which often do a 90-degree angle (or "T") into another hall with a bank of windows. Organizations exist who campaign and lobby for this cause. You wanna learn something about the subject, click the link on this page that says "School Design and Tornado Protection: Cause for Concern (Bob Roberts, Emergency Management Coordinator, Tulsa Public Schools, Tulsa, OK)" - a presentation from the 2012 National Severe Weather Workshop. Then go down to the Friday agenda and click the link, "The Role of Schools in Creating Weather Aware Communities (Rick Schmidt, Upper Dublin School District, Maple Glen, PA)"

There is no blame to be placed. This tornado is a weather event. Continual criticism and speculation from bloggers here - about everything from our local media (including calling the NBC affiliate "insane") to NWS Norman, SPC to stormchasers - all people who live here, in these devastated communities, some of whom have been profoundly affected by this tornado - to all of it that you think you know about - this continuing criticism and speculation is not appreciated by me. And I doubt it is appreciated by anyone in Oklahoma.

God bless Moore Police Department and other Search and Rescuers who found 101 living humans overnight.
I hate to say this, but Dallas-Fort Worth looks to be under the gun today. There is a huge inflow jet coming from the GOM into Texas, a visible dryline coming in from the west, with dew points in the 70's. The Atmosphere is primed for severe storms today in Northeast Texas. Likely to get some strong storms in Arkansas and Northern Louisiana as well. I think further north into Missouri and Illinois the threat will be less than in Texas, Arkansas and Louisiana. Hopefully nothing like yesterday, but I worry that Dallas-Fort Worth metro could face severe storms today.
Oklahoma tornado: is climate change to blame?
The Oklahoma twister was a 'classic look', but the data shows we are experiencing more volatility in the US tornado season

Climate change is supposed, among other things, to bring warmer and moister air to earth. That, of course, would lead to more severe thunderstorms and probably more tornadoes. The issue is that global warming is also forecast to bring about less wind shear. This would allow hurricanes to form more easily, but it also would make it much harder for tornadoes to get the full about lift and instability that allow for your usual thunderstorm to grow in height and become a fully-fledged tornado. Statistics over the past 50 years bear this out, as we've seen warmer and more moist air as well as less wind shear.

Meteorological studies differ on whether or not the warmer and moister air can overcome a lack of wind shear in creating more tornadoes in the far future. In the immediate past, the jet stream, possibly because of climate change, has been quite volatile. Some years it has dug south to allow maximum tornado activity in the middle of the country, while other years it has stayed to the north.

Although tornado reporting has in prior decades been not as reliable as today because of a lack of equipment and manpower, it's still not by accident that the six least active and four most active tornado seasons have been felt over the past decade. Another statistic that points to the irregular patterns is that the three earliest and four latest starts to the tornado season have all occurred in the past 15 years.

Basically, we've had this push and pull in recent history. Some years the number of tornadoes is quite high, and some years it is quite low. We're not seeing "average" seasons as much any more, though the average of the extremes has led to no meaningful change to the average number of tornadoes per year. Expect this variation to continue into the future as less wind shear and warmer moister air fight it out.

The overall result could very well be fewer days of tornadoes per Harold Brooks of the National Storm Center, but more and stronger tornadoes when they do occur. Nothing about the tornado in Moore, Oklahoma, or tornadoes over the past few decades break with this theory.

None of it proves or disproves senator Whitehouse's beliefs either. Indeed, we'll never know whether larger global warming factors were at play in Monday's storms. All we can do at this moment is react to them and give the people of Oklahoma all the help they need. Link
Quoting Waltanater:
Schools should close during expected outbreaks and severe weather in known areas and during peak tornado season based on forecasting. This is the logical thing to do. Is life for you "business as usual" during a Hurricane Warning for your specific area?


You are STUPID. Schools are safer than homes. Especially in areas that do get tornandoes. We can not run from the possiblity of a tornandoe/hurricane/earthquake. Natural disasters happen, it is our job to help people and learn from a disaster, so that maybe just maybe one live can be spared next time.
Quoting GOLSUTIGERS:


You are STUPID. Schools are safer than homes. Especially in areas that do get tornandoes. We can not run from the possiblity of a tornandoe/hurricane/earthquake. Natural disasters happen, it is our job to help people and learn from a disaster, so that maybe just maybe one live can be spared next time.




whats do it with out the name calling plzs
Quoting WPBHurricane05:


That's a bit skewed too when you consider the size of Texas vs. Wyoming, Oklahoma, Kansas, etc.


Story of my life..."size matters!"

My rain gauge filled up another 2.5" in that little deluge we had this morning. Getting rain events pretty much on a weekly basis the last couple of months or so.
Quoting NEFLWATCHING:
... as if knowing the numbers somehow explains the devastation.

Magical thinking. Also, the fellow who thinks there is/was a simple solution to the problem. More an emotional defense.
I'm going to bed now. Lets just hope I don't wake up with the full on flu.
Goodnight all. Sweet dreams.

Please stay safe.
Waltanater assessing blame is sad. Neither parents or the school system is to blame. This was an unavoidable, rare, and limited response time event. On a moderate warned day, a school is almost always where you want your kids; they are built to withstand most tornadoes. There was a 15% chance of a tornado within 25 miles of them and a little better than a 1% chance of it being a F4/F5. Your kids are coming home from school safe 99+% of the time with those odds. There were only a little more than 20 tornadoes total yesterday. This was random, tragic, and a top five for any US city event. Assessing blame shows no empathy, understanding of the dynamics, and callous lack of compassion.
Quoting JeffMasters:
Sorry, my post should say:

The tornado was on the ground for 40 minutes, from 2:56 - 3:36 pm CDT.

Working on a new post, but have been slowed by doing many interviews.

Jeff Masters
And the first cloud puffed its little parcel up along I 44 at Bridge Creek, just a few miles SW of Newcastle where this tornado touched down. (Add: KFOR says the cloud launched at 1:56 pm)
Good morning, afternoon and evening to all

I was watching the blog yesterday as the events were unfolding. My thank you to the bloggers who spent the hours they did, posting the sites, explaining what they were seeing, expressing their worries and showing me the seriousness of the whole situation.

I learned so much from all of you. Again, thank you so much.

Lindy

Quoting Tazmanian:
am looking forword too the ture rateing on this nado today it is vary likey it will be upgrade too EF5
I know it's an EF5 for sure and I'm not looking forward to making it official.
Doesn't matter the rating, people lost their lives.
Quoting GOLSUTIGERS:


You are STUPID. Schools are safer than homes. Especially in areas that do get tornandoes. We can not run from the possiblity of a tornandoe/hurricane/earthquake. Natural disasters happen, it is our job to help people and learn from a disaster, so that maybe just maybe one live can be spared next time.


Not necessarily true - heavily dependent upon the district that the schools are constructed in (please see post 542).

And although you may disagree (as I do) with the statement above, please refrain from the unnecessary name-calling.

Emotional responses are understandable - but unnecesssary. Count to 10 before you post.
A New Jersey Sinkhole swallowed a forklift operator when the floor of a warehouse in East Rutherford where he was working suddenly gave way.

Thankfully, the man who was identified as Danny Rodriguez was able to escape from a life-threatening danger after the New Jersey sinkhole consumed him and his forklift. He was then immediately brought to the hospital to get treatment for a back injury he sustained. The rescuers said that the forklift he was driving shielded the man from getting crushed when he fell to the sinkhole.

The 8-foot deep New Jersey sinkhole popped up in East Rutherford, Monday afternoon at around 12.30 pm, in a warehouse that stores non-perishable food items. Reportedly, the New Jersey sinkhole measured at about 40 feet by 40 feet in width. The sinkhole was filled with cooking oil and soy sauce, which was stored in the warehouse rented by AM Express Freight...

http://www.kpopstarz.com/articles/28392/20130521/ new-jersey-sinkhole-east-rutherford.htm
Quoting EricSpittle:

Real easy to sit on the sidelines over the internet and blame other people for their children's deaths. Bet that makes you feel good about yourself. Show some compassion for those who lost loved ones.
I don't think he meant it like that. Breathe out. It's easy to feel like casting blame, even if it's only blaming people you think are blaming people.

Quoting goosegirl1:


I might have the wrong impression from the comment, but I read it as a call to school officials to close schools, or at bare minimum to provide shelters at schools. I do realize it's hard to get children out and home to (hopefully) safety on a 16 minute notice, but maybe they can consider closing when atmospheric conditions warrant? Or build a shelter in place at each school? Honestly, there are no good answers to a situation like this. It's just an awful tragedy.
Sometimes shelter in place is the only option. I strongly advocate strengthening safe areas in schools, even if it involves retrofitting specific interior walls, because the little ones can't do very much to protect themselves. I also see the value of the school as shelter in neighbourhoods where homes don't have basements.
Look. We can argue the safety issues of schools vs. homes till we're blue in the face. When you have incomprehensible destruction like yesterday from a mile wide EF5, nothing short of anything underground is safe. If I had to speculate on which is sturdier (Generally Speaking), I would take the school in a heartbeat. That is neither here nor there. It's moot. Everything in it's path was destroyed.
Quoting Barefootontherocks:
And the first cloud puffed its little parcel up along I 44 at Bridge Creek, just a few Miles SW of Newcastle where this tornado touched down.

Thanks for the correction. NWS issues the warnings, the SPC issues the convective outlooks.
Levi32,
Can you rent a car? Norman's only about three hours up the I35. You can storm-chase along the way. j/k Won't be be fun driving between here and there today.

We've been getting tstorms here since about 4 a.m. Hope they stay away from Moore.
...

'Bye now, wu.
Quoting daddyjames:


Really? So basically, half of the sate of Oklahoma would have had schools closed on Monday. And what about all the single working parents (like me) who would have to stay home with them? In reality, most of those children would end up at day care all day - where we have the same problem. But of course, according to your logic, the whole state should just shut down anytime there is a forecast for severe weather. Heck, we in OK during the spring would never be able to work. And our kids would never be in school

Really? Think before you post, and cut out the exaggerated outrage.
There is no way to predict tornado's actually dropping and their location when/if they do. I would like to see mandatory shelters for populated areas in high probability areas though..
Quoting SouthernIllinois:

Thanks for the correction. NWS issues the warnings, the SPC issues the convective outlooks.
This is the last time I will ever address you and I request you do not address me again on these blogs or in any way interact with me. TIA
Quoting Barefootontherocks:
Levi32,
Can you rent a car? Norman's only about three hours up the I35. You can storm-chase along the way. j/k Won't be be fun driving between here and there today.

We've been getting tstorms here since about 4 a.m. Hope they stay away from Moore.
...

'Bye now, wu.



i sure he could rent a car but i sure he dos not want too pay for the damg done too the car if he got in too close the the nado or hail dmag or some in so too keep it cheap it would be better if he had his on car for storm chassing and not a rentell car
Quoting GOLSUTIGERS:


You are STUPID. Schools are safer than homes. Especially in areas that do get tornandoes. We can not run from the possiblity of a tornandoe/hurricane/earthquake. Natural disasters happen, it is our job to help people and learn from a disaster, so that maybe just maybe one live can be spared next time.

Watch it. Both your assertions and rudeness.
And I suggest you come up with actual risk statistics to back up your forcefully certain comment.

Social scientists and meteorologists study these kinds of issues for years to come up with the recommendations that they do. A tornado that kills kids in a school doesn't necessarily change the risk, nor does it provide us with an alternative with which to objectively compare, because we do not know where those kids would have been instead of at the school.
The problem with people these days is that they spend most of their time trying to lay blame on someone else, rather than trying to figure out a solution to the problem. If you think it was a great idea to put those kids on a school bus and evacuate them from a well-built school, then I hope you are never in charge of a bunch of children.
Considering this is one of the best developed tornados on the radar, and the state the buildings are in now, this was most definitely an EF5 tornado.

Morning all. Its about 80 degrees and balmy with a 73F dew point here in Texas about 20 miles NE of Austin. The air is ripe with moisture for sure.
Quoting Barefootontherocks:
For those of you who are speculating on and second-guessing decisions made and not made, I refer you to the tornado watch from May 20, 2013. The severe parameters indicated only a "low" risk for EF2-plus. I am sure I am not the only one who made or changed storm prep decisions based on that. Sunday when Carney, Shawnee and other places were hit, the EF2plus risk was moderate.

Some schools in Oklahoma have underground shelters. Some do not. I visited a little place near here yesterday called Jerusalem, OK. It's the site of a one room school house from the old days, about a ten acre park. You can walk up and touch the old concrete underground structure that served as a storm shelter. Lots of talk since Greenburg I think it was, about not sheltering kids in school hallways, which often do a 90-degree angle into another hall with a bank of windows. Organizations exist who campaign and lobby for this cause. You wanna learn something about the subject, click the link on this page that says "School Design and Tornado Protection: Cause for Concern (Bob Roberts, Emergency Management Coordinator, Tulsa Public Schools, Tulsa, OK)" - a presentation from the 2012 national Severe Weather Workshop. Then go down to the Friday agenda and click the link, "The Role of Schools in Creating Weather Aware Communities (Rick Schmidt, Upper Dublin School District, Maple Glen, PA)"

There is no blame to be placed. This tornado is a weather event. Continual criticism and speculation from bloggers here - about everything from our local media (including calling the NBC affiliate "insane") to NWS Norman, SPC to stormchasers - all people who live here, in these devastated communities, some of whom have been profoundly affected by this tornado - to all of it that you think you know about - this continuing criticism and speculation is not appreciated by me. And I doubt it is appreciated by anyone in Oklahoma.

God bless Moore Police Department and other Search and Rescuers who found 101 living humans overnight.
This is something you have to live with as a person residing in / at "ground zero". I like to think of it as "constructive criticism" and hope something worthwhile comes of all the criticism and speculation. It IS possible that positive change can result. However, I know it doesn't feel good when it's you and yours that have gone through the horrible experience and then you also have to endure the 20/20 hindsight viewers.

And re. the bolded sentence, I am excited to see the number of people found alive. I had a restless night overnight thinking about people buried in rubble and then getting rained on overnight. I hope they find a lot more alive today.
Quoting Barefootontherocks:
This is the last time I will ever address you and I request you do not address me again on these blogs or in any way interact with me. TIA

LOL. Okay????? Have a lovely day too!
Quoting MississippiWx:
The problem with people these days is that they spend most of their time trying to lay blame on someone else, rather than trying to figure out a solution to the problem. If you think it was a great idea to put those kids on a school bus and evacuate them from a well-built school, then I hope you are never in charge of a bunch of children.
AMEN!!! People need to quit being political for now because not all information is out there yet. To make a conclusion, we need information and facts which we don't have yet.
Not trying to start any fights on the blog, but why dont people just stay away from places with weather this bad regularly? OK is one of the most known states for severe weather..... I, for one would not move there.. If everything i owned got destroyed somewhere, i wouldnt live there anymore...
Quoting NEFLWATCHING:
It is just a guess on my part, but we are all guilty of wanting to know "the numbers" as soon as possible after something of this magnitude happens anywhere, as if knowing the numbers somehow explains the devastation. So my thinking is that amid the pandemonium the medical examiner was pressured for a count. He likely counted the ones already received, and then added to the count the number he expected to receive based on initial calls from the field. Doubtless that is where double-counting occurred. T
he numbers will surely rise.


I think the numbers are important in defining an event. Weather is never 100% safe, so a few deaths or injuries might be unavoidable. Never hear about lightning strikes for some reason. Statistically don't they kill about 1000 people in the US every year?

I remember the report of a vehicle with two occupants being tossed over the PA/MD border years back. That's relatively substantial and I would say it must have been a tornado.

Those images are so black. The relative humidity bounced around Amarillo, TX by a few % just prior to this event. The cut on it just nosed into the ground. That is some forceful event.
573. MahFL
Quoting Waltanater:
Schools should close during expected outbreaks and severe weather in known areas and during peak tornado season based on forecasting. This is the logical thing to do. Is life for you "business as usual" during a Hurricane Warning for your specific area?


You can't close schools, education timetables are tight. Also daycare costs for parents who have to use that are very expensive. I never said don't take action during a Tornado Warning, you should. Also if your in a Tornado Watch you should be prepared to take cover/evasive action where ever you might happen to be if a Warning for your location is issued.
Quoting Torito:
Not trying to start any fights on the blog, but why dont people just stay away from places with weather this bad regularly? OK is one of the most known states for severe weather..... I, for one would not move there..

There is no place on earth where weather and the environment cannot find a way to kill you.
Quoting JNCali:
There is no way to predict tornado's actually dropping and their location when/if they do. I would like to see mandatory shelters for populated areas in high probability areas though..


Oklahoma has been encouraging people to put into place shelters at home. Mandating what people should do on their own property would, to say the least, be met with some "resistance" here.

However, I do believe that the state could and should mandate that apartment complexes and trailer parks have in place "safe rooms" or shelters available for residents. that is the one weakness with the state emphasizing "personal responsibility". In most cases, these people have no place to go, literally.

Just saw a story of a couple of people in Moore, new to this region, living in a second story apartment. They took refuge in a ditch outside, as this was the safest place for them to actually go.

And agree that schools should be required to have properly constructed "safe room" or storm shelter for the kids and teachers to take shelter in.
Quoting ScottLincoln:

There is no place on earth where weather and the environment cannot find a way to kill you.


But some places are safer than others...
None of it proves or disproves senator Whitehouse's beliefs either. Indeed, we'll never know whether larger global warming factors were at play in Monday's storms. All we can do at this moment is react to them and give the people of Oklahoma all the help they need.

I see many people have forgotten [or perhaps never knew] that this is STILL below average season so far. This one tornado has changed the lives of thousands in the OKC area, but in terms of wx and climatology, not much has changed.
Oklahoma Tornado Recovery, Severe Weather Threat Continues


Recovery efforts continue in Moore, Okla., a suburb of Oklahoma City, after Monday's devastating tornado. Meanwhile, today's severe weather threat shifts eastward and continues for areas of central Texas through the Great Lakes. Areas of central Texas into southwestern Arkansas are at moderate risk of severe storms with tornadoes, very large hail, and damaging wind gusts.

Latest Updates on Moore, Okla.


Tornado Recovery
... A Severe Thunderstorm Warning remains in effect until 1045 am CDT
for eastern Harmon... southeastern Beckham... southwestern Washita...
western Kiowa... Greer and northern Jackson counties...

at 1010 am CDT... National Weather Service meteorologists continued to
detect a severe thunderstorm located near Lone Wolf... moving east at
40 mph. This storm produced Golf Ball size hail north of Mangum
around 10 am.

Hazards in the warning include...
large damaging hail up to Golf Ball size...
damaging winds in excess of 60 mph...

Locations impacted include...
Mangum... Granite... Blair... Lone Wolf... Willow... Warren... Retrop...
Brinkman... Altus-Lugert lake and Hester.

Precautionary/preparedness actions...

Move inside a sturdy building until the storm has passed.

Lat... Lon 3521 9933 3478 9905 3468 9983 3507 9984
time... Mot... loc 1510z 249deg 36kt 3500 9931



Just spotted 2 tornado vortex signatures In fredrick.

Quoting ScottLincoln:

There is no place on earth where weather and the environment cannot find a way to kill you.
+1
Quoting Torito:


But some places are safer than others...

So you recommend millions upon millions moving into the few [relatively] safe states in the USA? That seems problematic.
Quoting BahaHurican:
This is something you have to live with as a person residing in / at "ground zero". I like to think of it as "constructive criticism" and hope something worthwhile comes of all the criticism and speculation. It IS possible that positive change can result. However, I know it doesn't feel good when it's you and yours that have gone through the horrible experience and then you also have to endure the 20/20 hindsight viewers.
I appreciate what you are saying, and I hope you can appreciate when I say most of what I have seen has been insensitive and not in any way constructive given the context. I am sure things will be learned from this tornado and positive changes will be made, just as they have been made in the past. As years go by more is learned about forecasting and safety by those who take an objective look at the situation. These changes will not result from ignorant comments made by wubloggers here in JeffMasters blog.
Quoting TropicalAnalystwx13:

So you recommend millions upon millions moving into the few [relatively] safe states in the USA? That seems problematic.


Im just throwing a thought out there, i understand the whole overpopulation thing, but im saying that if i was in that mess, i would not continue to live there.


MESOSCALE DISCUSSION 0749
NWS STORM PREDICTION CENTER NORMAN OK
1009 AM CDT TUE MAY 21 2013

AREAS AFFECTED...MUCH OF NRN TX

CONCERNING...SEVERE POTENTIAL...WATCH LIKELY

VALID 211509Z - 211645Z

PROBABILITY OF WATCH ISSUANCE...95 PERCENT

SUMMARY...STORMS WILL INCREASE IN COVERAGE AND INTENSITY OVER THE
NEXT 1-2 HRS...AND PARTICULARLY DAMAGING WINDS ARE EXPECTED TO
AFFECT MUCH OF NRN TX. IN ADDITION...A FEW TORNADOES AND VERY LARGE
HAIL WILL ALL BE POSSIBLE. A WATCH WILL BE ISSUED SHORTLY.

DISCUSSION...AN OUTFLOW BOUNDARY CURRENTLY EXTENDS FROM WRN AR WWD
ALONG THE RED RIVER TO JUST W OF ABILENE TX...JOINING WITH A
DEVELOPING COLD FRONT WHICH WILL CONTINUE SWD ACROSS W TX. TO THE
E...AN EXTREMELY MOIST AND UNSTABLE ATMOSPHERE WAS IN PLACE...WITH
MIDLEVEL LAPSE RATES OF 8.0-9.0 C/KM.

STORMS WILL RAPIDLY DEVELOP ALONG THE ADVANCING COLD FRONT WHICH
ALSO INTERSECTS THE OUTFLOW BOUNDARY IN THE NEXT FEW HOURS...AND ARE
EXPECTED TO QUICKLY GROW UPSCALE INTO A DAMAGING MCS. WIND GUSTS
OVER HURRICANE FORCE...WIND DRIVEN HAIL...AND A FEW TORNADOES WILL
BE POSSIBLE AS THE SYSTEM MATURES AND FORWARD PROPAGATES ACROSS A
LARGE PART OF NRN TX AND INTO THE ARKLATEX THIS EVENING.

ALTHOUGH MAINLY A LINEAR STORM MODE IS EVENTUALLY EXPECTED...INITIAL
DEVELOPMENT MAY BE SUPERCELLS WITH AN ENHANCED TORNADO THREAT. WHEN
STORMS DO MERGE...THERE WILL LIKELY BE AREAS OF ROTATION EMBEDDED
WITHIN THE ADVANCING LINE...PERHAPS PRODUCING SWATHS OF PARTICULARLY
DAMAGING WINDS.

..JEWELL/KERR.. 05/21/2013


ATTN...WFO...SHV...TSA...HGX...FWD...OUN...SJT...

LAT...LON 31970006 32929962 33939680 33899492 33579436 33179426
32169421 31459469 31169556 31329716 31479905 31970006

279
WUUS54 KOUN 211518
SVROUN
OKC075-149-211600-
/O.NEW.KOUN.SV.W.0367.130521T1518Z-130521T1600Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
1018 AM CDT TUE MAY 21 2013

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN KIOWA COUNTY IN SOUTHWEST OKLAHOMA...
WASHITA COUNTY IN WESTERN OKLAHOMA...

* UNTIL 1100 AM CDT

* AT 1014 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM LOCATED 4 MILES NORTH OF LONE WOLF...MOVING
EAST AT 40 MPH.

HAZARDS IN THE WARNING INCLUDE...
LARGE DAMAGING HAIL UP TO GOLF BALL SIZE...
DAMAGING WINDS IN EXCESS OF 60 MPH...

* LOCATIONS IMPACTED INCLUDE...
HOBART...CORDELL...MOUNTAIN VIEW...SENTINEL...CORN...DILL CITY...
GOTEBO...ROCKY...COLONY...CLOUD CHIEF AND COWDEN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE INSIDE A STURDY BUILDING UNTIL THE STORM HAS PASSED.


LAT...LON 3543 9868 3497 9864 3484 9910 3527 9937
3528 9937
TIME...MOT...LOC 1517Z 249DEG 36KT 3505 9922
Quoting Torito:


But some places are safer than others...

Until they are not.
2.25" hail has been detected falling in kiowa, OK.
Quoting Torito:


Im just throwing a thought out there, i understand the whole overpopulation thing, but im saying that if i was in that mess, i would not continue to live there.

I understand what you are saying, but the vast majority of Folks put other aspects in life (Job, Family) at a far greater importance than the specific geographic region's potential of severe/extreme weather. To take it a step further a good number of American's aren't even able to properly identify the Country's geographic regions on a national map let alone possess enough ability to comprehend the weather and climate-related risks there.
Quoting ncstorm:
Rough weather possible over devastated areas.
I'm very uncertain about the current death toll, they're claiming it's gone down to 24 because they listed several bodies twice. However, that can't be possible if they've gone down from 51 because that means they've counted every victim twice and some even three times. I think there's some serious misinformation being fed into the media about this. We'll have to see.
Quoting CybrTeddy:
I'm very uncertain about the current death toll, they're claiming it's gone down to 24 because they listed several bodies twice. However, that can't be possible if they've gone down from 51 because that means they've counted every victim twice and some even three times. I think there's some serious misinformation being fed into the media about this. We'll have to see.


Umm... I heard 91.
MESOSCALE DISCUSSION 0748
NWS STORM PREDICTION CENTER NORMAN OK
0946 AM CDT TUE MAY 21 2013

AREAS AFFECTED...MUCH OF OK

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 211446Z - 211715Z

PROBABILITY OF WATCH ISSUANCE...40 PERCENT

SUMMARY...SCATTERED STORMS WILL PERSIST ACROSS MUCH OF OK. LOCALLY
HEAVY RAIN AND HAIL TO THE SIZE OF QUARTERS WILL BE POSSIBLE.
HOWEVER...COVERAGE OF HAIL MAY NOT BE ENOUGH FOR A WATCH.

DISCUSSION...A STRONG SHORTWAVE TROUGH CONTINUES TO EJECT EWD ACROSS
THE TX PANHANDLE AND INTO WRN OK THIS MORNING WITH SCATTERED STRONG
TO SEVERE HAIL STORMS BEGINNING TO FORM NEAR CHILDRESS TX. THESE
STORMS ARE LIKELY ROOTED NEAR 700 MB...WELL ELEVATED ATOP THE
DEEPENING SURFACE COOL LAYER. FRONTOGENETICAL FORCING AND WARM
ADVECTION AT 700 ARE CURRENTLY CENTERED OVER THE TX/OK BORDER AND
WILL SPREAD EWD ACROSS THE BODY OF OK.

THE 12Z AMA AND OUN SOUNDINGS BOTH SHOW INSTABILITY ROOTED AT 700
MB...AND COOLING ALOFT FROM THE W WILL OVERSPREAD OK. FORECAST
SOUNDINGS FROM MULTIPLE MODELS INDICATE THAT DEEP LAYER SHEAR IN THE
CLOUD LAYER WILL AT LEAST BE MARGINALLY FAVORABLE FOR A FEW LONGER
LIVED CELLS CAPABLE OF HAIL...POSSIBLY AFFECTING THE OKC METRO AREA
LATE MORNING/EARLY AFTERNOON.

..JEWELL/KERR.. 05/21/2013
Quoting Torito:


Umm... I heard 91.


CNN is feeding in from the AP that it's 24. Originally it was 51 with 40 more likely to come in, making 91. If that's the case, it's a statistically illogical error for one to go down from 91 to 24. I think they might mean bodies identified.
I know we're all very busy dissecting the events of yesterday, but let's remember we've got day 3 of this outbreak on our hands this afternoon. If you've got loved ones in Dallas and surrounding evirons, call them and make sure they've got an eye on the sky today.
What happened in Moore was tragic, and an aboslute catastrophe, but if a twister like that hits the DFW metroplex, we'll be bickering about death tolls with another zero or two compared to Moore.

another tornadic vortex signature north of abilene.
This new atmo We have created, well...,has the Potential to create greater damage from the more energy available.

Terra forming Gaia via increasing co2 levels is responsible.

Expect more of the same in all severe weather events from Cane's to nadoe's.
Something I have been speculating about to myself is whether there is something about the geography / topography of that part of OK that lends itself to numerous high velocity tornadoes. However, I don't have any statistical data on # of tornadoes and EF4-EF5 tornadoes that have affected the area.

Is it possible that the "lay of the land" could contribute to torque potential?

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Quoting ScottLincoln:

Watch it. Both your assertions and rudeness.
And I suggest you come up with actual risk statistics to back up your forcefully certain comment.

Social scientists and meteorologists study these kinds of issues for years to come up with the recommendations that they do. A tornado that kills kids in a school doesn't necessarily change the risk, nor does it provide us with an alternative with which to objectively compare, because we do not know where those kids would have been instead of at the school.


Please read comment 564.
Something I have been speculating about to myself is whether there is something about the geography / topography of that part of OK that lends itself to numerous high velocity tornadoes. However, I don't have any statistical data on # of tornadoes and EF4-EF5 tornadoes that have affected the area.

Is it possible that the "lay of the land" could contribute to torque potential?
The National Weather Service has issued Tornado Watch 201 in
effect until 7 PM CDT this evening for the following areas

In Oklahoma this watch includes 3 counties

In southeast Oklahoma

Bryan Marshall

In southern Oklahoma

Love

In Texas this watch includes 3 counties

In northern Texas

Archer Baylor Clay

This includes the cities of... Archer City... Durant... Henrietta...
Madill... Marietta and Seymour.

The Getting It Right Conference

Conference Agenda


AGENDA

Monday, June 3, 2013

4:00pm 6:30pm Registration

6:30pm 6:40pm - Welcome, Overview & Conference Expectations, Paul Timmons, Executive Director, Portlight Strategies, Inc.

6:40pm 7:40pm- Dinner (Provided)

7:40pm:8:30pm- Dr. Jeff Masters, Chief Meteorologist, Weather Underground

Dr. Masters co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990. He'll discuss current weather and environmental trends, and why we can expect to see more storms like Sandy



..click the link for full Schedule
The National Weather Service has issued Tornado Watch 201 in
effect until 7 PM CDT this evening for the following areas

In Texas this watch includes 15 counties

In west central Texas

Brown Callahan Coleman
Concho Haskell Jones
Kimble Mason McCulloch
Menard Runnels San Saba
Shackelford Taylor Throckmorton

This includes the cities of... Abilene... Albany... Anson... Baird...
Ballinger... Brady... Brownwood... Coleman... Cross Plains... Eden...
Hamlin... Haskell... Junction... Mason... Menard... Paint Rock...
San Saba... Stamford... Throckmorton... Winters and Woodson.


This is a quick view of the initial counties (WOU) product for WW 0201
Full watch page will be available shortly. Please check back soon.

WOUS64 KWNS 211523
WOU1

BULLETIN - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH OUTLINE UPDATE FOR WT 201
NWS STORM PREDICTION CENTER NORMAN OK
1025 AM CDT TUE MAY 21 2013

TORNADO WATCH 201 IS IN EFFECT UNTIL 700 PM CDT FOR THE
FOLLOWING LOCATIONS

OKC013-023-085-095-220000-
/O.NEW.KWNS.TO.A.0201.130521T1525Z-130522T0000Z/

OK
. OKLAHOMA COUNTIES INCLUDED ARE

BRYAN CHOCTAW LOVE
MARSHALL


TXC001-009-023-027-035-049-059-077-083-085-093-095 -097-099-113-
119-121-133-139-143-145-147-161-181-193-207-213-21 7-221-223-231-
237-251-253-257-267-277-281-289-293-307-309-319-32 7-331-333-337-
349-363-367-379-395-397-399-411-417-425-429-439-44 1-447-467-497-
503-220000-
/O.NEW.KWNS.TO.A.0201.130521T1525Z-130522T0000Z/

TX
. TEXAS COUNTIES INCLUDED ARE

ANDERSON ARCHER BAYLOR
BELL BOSQUE BROWN
CALLAHAN CLAY COLEMAN
COLLIN COMANCHE CONCHO
COOKE CORYELL DALLAS
DELTA DENTON EASTLAND
ELLIS ERATH FALLS
FANNIN FREESTONE GRAYSON
HAMILTON HASKELL HENDERSON
HILL HOOD HOPKINS
HUNT JACK JOHNSON
JONES KAUFMAN KIMBLE
LAMAR LAMPASAS LEON
LIMESTONE MASON MCCULLOCH
MCLENNAN MENARD MILAM
MILLS MONTAGUE NAVARRO
PALO PINTO PARKER RAINS
ROBERTSON ROCKWALL RUNNELS
SAN SABA SHACKELFORD SOMERVELL
STEPHENS TARRANT TAYLOR
THROCKMORTON VAN ZANDT WISE
YOUNG
One watch appeared and then suddenly half of TX turned red.
We are a brave and resilient people. As American's we're not going to run from tornadoes in our heartland. Many have had families for generations there, their jobs are there, and their kid's friends are there. Americans rebuild and come back stronger than before. Shall we abandon the coasts in the Gulf and Atlantic? Shall we flee from California's earthquakes? Like Scott Lincoln said, it can happen anywhere anytime, and to live in fear is no freedom. Shall we flee Alabama/Arkansas/Missouri/Kansas/Oklahoma etc. where tragic tornado events have happened with regularity? No way, in America we overcome.
Quoting BahaHurican:
Something I have been speculating about to myself is whether there is something about the geography / topography of that part of OK that lends itself to numerous high velocity tornadoes. However, I don't have any statistical data on # of tornadoes and EF4-EF5 tornadoes that have affected the area.

Is it possible that the "lay of the land" could contribute to torque potential?



I'm not sure, but I would think it mainly has something to do with Oklahoma being in the heart of tornado alley. In Mississippi, we have had several killer EF4-EF5 tornadoes in the past and our "lay of the land" is much different than Oklahoma. Like I said, probably happens more in places that have the most favorable setups more often. The fact that 3 or 4 have happened right there in Moore is a crazy statistic and I would love to know the percentage chance of that happening.

ScottLincoln might have a better answer for you, though.
Quoting GOLSUTIGERS:


Please read comment 564.

Calling someone stupid is not an appropriate response to comment 564.
Quoting Tribucanes:
We are a brave and resilient people. As American's we're not going to run from tornadoes in our heartland. Many have had families for generations there, their jobs are there, and their kid's friends are there. Americans rebuild and come back stronger than before. Shall we abandon the coasts in the Gulf and Atlantic? Shall we flee from California's earthquakes? Like Scott Lincoln said, it can happen anywhere anytime, and to live in fear is no freedom. Shall we flee Alabama/Arkansas/Missouri/Kansas/Oklahoma etc. where tragic tornado events have happened with regularity? No way, in America we overcome.

Nice post.
Quoting hydrus:
Rough weather possible over devastated areas.
Oh my that is not good.I am praying for those families who are having to go through this nightmare.
May be some severe weather across TN today.
Quoting MississippiWx:


I'm not sure, but I would think it mainly has something to do with Oklahoma being in the heart of tornado alley. In Mississippi, we have had several killer EF4-EF5 tornadoes in the past and our "lay of the land" is much different than Oklahoma. Like I said, probably happens more in places that have the most favorable setups more often. The fact that 3 or 4 have happened right there in Moore is a crazy statistic and I would love to know the percentage chance of that happening.

ScottLincoln might have a better answer for you, though.

I have some thoughts, but really not a "better" answer. I know some people studying tornadoes from the 2011 outbreak had looked into the terrain in AL and how it may have affected some of the tornadoes. That terrain was more rugged than central OK, which is generally lightly rolling hills. I'm not sure that I have any kind of hypothesis related to topography, but Oklahoma City is one of the larger metro areas right in the "sweet spot" for tornadoes and significant tornadoes. Although odd that Moore has been hit so many times, I think when looking at all the more prone areas of the plains and mid-south, it doesn't stand out that much compared to others.

I can certainly see this becoming something of more research after the last few days, which would trump my rough thoughts.
Quoting mikatnight:


Interesting and ominous. The moisture flowing up from the Gulf...


hopefully not as bad as yesterday

sorry for late reply at work was in on break when posted

on lunch in 20 mins

Quoting Barefootontherocks:
I appreciate what you are saying, and I hope you can appreciate when I say most of what I have seen has been insensitive and not in any way constructive given the context. I am sure things will be learned from this tornado and positive changes will be made, just as they have been made in the past. As years go by more is learned about forecasting and safety by those who take an objective look at the situation. These changes will not result from ignorant comments made by wubloggers here in JeffMasters blog.
I can appreciate your feeling because I've been there. I've learned you can let the insensitivity get to you [and it can] or you can take what is helpful to you from what is said and ignore the rest. A lot of times the insensitivity COMES from ignorance, so this blog becomes an opportunity to sensitize others to your experience and to the reality they may not understand. We have a lot of youngsters here who genuinely need to learn about walking in others' shoes. Additionally, while wunderbloggers' comments are often ignorant and insensitive, that doesn't mean that positive change cannot come from them. And sometimes that change starts with reducing one person's ignorance. A lot depends on what we as bloggers are willing to accept.

I am glad you made your comment, because it is easy for those of us outside the situation to react as if it is some kind of "test case" and ignore the human tragedy of such events. Thanks for reminding us and keeping us humane.

000
AXNT20 KNHC 211152
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 AM EDT TUE MAY 21 2013

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1015 UTC.

...TROPICAL WAVES...
TROPICAL WAVE EXTENDS FROM 8N38W TO EQ40W MOVING W AT 10-15 KT.
WAVE COINCIDES WITH A LOW AMPLITUDE MOISTURE MAXIMUM ON THE
TOTAL PRECIPITABLE WATER IMAGERY WITH CURVATURE EVIDENT ON THE
700 MB STREAMLINES AND SATELLITE DERIVED WINDS. WAVE ALSO
DISRUPTS THE ITCZ.

TROPICAL WAVE EXTENDS FROM 15N63W TO INLAND OVER SOUTH AMERICA
TO NEAR 8N65W MOVING W NEAR 5 KT. WAVE COINCIDES WITH A WEAK
MOISTURE MAXIMUM ON THE TOTAL PRECIPITABLE WATER IMAGERY THAT
CONTINUES TO SHIFT NORTHWARD OVER THE E CARIBBEAN WITH A WEAK
CURVATURE ON THE 700 MB STREAMLINES. SCATTERED SHOWERS AND
POSSIBLE ISOLATED THUNDERSTORMS DOT THE W TROPICAL ATLC/E
CARIBBEAN FROM 10N-18N BETWEEN 58W-66W.

...ITCZ/MONSOON TROUGH...
THE MONSOON TROUGH EXTENDS ACROSS AFRICA INTO THE E TROPICAL
ATLC NEAR 11N15W CONTINUING ALONG 5N21W TO 3N26W WHERE THE ITCZ
BEGINS AND CONTINUES ALONG 4N34W TO 2N38W. SCATTERED MODERATE/
STRONG CONVECTION IS WITHIN 60 NM OF LINE FROM 4N6W TO 5N12W.
CLUSTERS OF SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS ARE OFF
THE COAST OF SW AFRICA FROM 3N-9N E OF 17W TO THE PRIME
MERIDIAN. CLUSTERS OF SCATTERED MODERATE CONVECTION ARE FROM 2N-
5N BETWEEN 19W-30W. CLUSTERS OF ISOLATED MODERATE CONVECTION ARE
FROM 2N-6N BETWEEN 30W-38W AND FROM 2N TO THE EQUATOR BETWEEN
41W-46W.

...DISCUSSION...

GULF OF MEXICO...
A SHORTWAVE UPPER TROUGH EXTENDS FROM SE GEORGIA OVER THE
FLORIDA PENINSULA TO NEAR 24N80W IN THE STRAITS OF FLORIDA. A
BROAD UPPER RIDGE AXIS EXTENDS OVER THE W GULF ACROSS S MEXICO
NEAR VERACRUZ TO OVER THE SE CONUS NEAR THE LOUISIANA/TEXAS
BORDER COVERING THE REMAINDER OF THE GULF. A SURFACE RIDGE
EXTENDS FROM THE W ATLC ACROSS CENTRAL FLORIDA TO OVER THE E
GULF WITH SOUTHERLY RETURN FLOW COVERING THE REMAINDER OF THE
GULF. WATER VAPOR IMAGERY INDICATES MOSTLY STRONG SUBSIDENCE AND
DRY STABLE AIR ALOFT DOMINATING THE GULF THIS MORNING...THUS
CLEAR SKIES FOR ALL BUT THE FAR W GULF WHERE LOW LEVEL CLOUDS
ARE N OF 23N W OF 94W. MODEL GUIDANCE CONTINUES TO SHOW HIGH
MOISTURE AND PRECIPITATION POTENTIAL OVER THE FAR E GULF AND
OVER THE FLORIDA PENINSULA THROUGH EARLY WED BEFORE THE UPPER
TROUGH IS EXPECTED TO MOVE E OF FLORIDA. A COLD FRONT MAY MOVE
INTO THE NE GULF FRI THEN DRIFT S THROUGH SAT.

CARIBBEAN SEA...
AN UPPER RIDGE AXIS EXTENDS ALONG THE N COAST OF SOUTH AMERICA
GIVING THE CARIBBEAN S OF 17N SW FLOW ALOFT. THE AREA N OF 17N
IS UNDER NEAR ZONAL WESTERLY FLOW ALOFT. THE UPPER FLOW IS
DRAWING TROPICAL MOISTURE ALOFT OVER THE S CARIBBEAN AND COUPLED
WITH THE MONSOON TROUGH THAT EXTENDS FROM COLOMBIA NEAR 10N75W
ALONG 11N80W TO ACROSS COSTA RICA NEAR 10N84W ARE GENERATING
SCATTERED SHOWERS/THUNDERSTORMS S OF 12N BETWEEN 74W-84W.
CLUSTERS OF SCATTERED SHOWERS/ISOLATED THUNDERSTORMS CONTINUE
OVER PORTIONS OF E CUBA AND FROM 16N-20N BETWEEN 74W-80W. THE E
CARIBBEAN IS COVERED IN THE TROPICAL WAVE SECTION ABOVE. SURFACE
RIDGE OVER THE W ATLC WILL MAINTAIN MODERATE TO FRESH TRADE
WINDS OVER THE REGION WITH STRONGER WINDS AT TIMES OFF THE COAST
OF COLOMBIA AND IN THE GULF OF HONDURAS THROUGH MID WEEK.

HISPANIOLA...
SCATTERED SHOWERS/ISOLATED THUNDERSTORMS ARE WITHIN 60 NM ALONG
THE S COAST OF THE DOMINICAN REPUBLIC BETWEEN BAHIA DE YUMA TO
BAHIA DE OCOA. MODEL GUIDANCE INDICATES A SIMILAR PATTERN WILL
PERSIST TODAY WITH THE MOST LIKELY PRECIPITATION TO BE DURING
THE AFTERNOON AND EARLY EVENING HOURS ACROSS THE ISLAND WHEN
PEAK DAYTIME HEATING AND INSTABILITY OCCUR. ANY AREAS THAT
RECEIVE MEASURABLE AMOUNTS OF RAINFALL WILL LIKELY BE PRONE TO
LOCALIZED FLOODING. MOISTURE FROM A TROPICAL WAVE MAY INCREASE
ACTIVITY OVER THE ISLAND TONIGHT INTO WED.

ATLANTIC OCEAN...
A SHORTWAVE UPPER TROUGH OVER THE FLORIDA PENINSULA TO NEAR
24N80W IN THE STRAITS OF FLORIDA AND IS AMPLIFYING AN UPPER
RIDGE OVER THE FAR W ATLC THAT EXTENDS FROM THE TURKS AND CAICOS
NEAR 21N72W TO BEYOND 32N77W AND IS ENHANCING THE SCATTERED
SHOWERS/ISOLATED THUNDERSTORMS FROM 24N-32N W OF 78W TO THE
FLORIDA COAST. A SURFACE RIDGE EXTENDS FROM A 1024 MB HIGH NEAR
33N62W ACROSS CENTRAL FLORIDA INTO THE GULF OF MEXICO. CLUSTERS
OF SCATTERED SHOWERS/ISOLATED THUNDERSTORMS ARE WITHIN 75 NM
ALONG THE N COAST OF CUBA E OF 79W. A BROAD UPPER TROUGH COVERS
THE REMAINDER OF THE W ATLC INTO THE CENTRAL ATLC SUPPORTING A
COLD FRONT THAT ENTERS THE REGION NEAR 32N47W TO 28N54W WHERE IT
DISSIPATES TO 27N60W. SCATTERED SHOWERS ARE WITHIN 90 NM E OF
THE FRONT N OF 29N. A WEAK SURFACE TROUGH IS TO THE SE EXTENDING
FROM 29N48W THROUGH AN EQUALLY WEAK 1019 MB SURFACE LOW NEAR
27N48W TO 25N49W. THIS FEATURE IS NOT PRODUCING ANY SIGNIFICANT
WEATHER. A BROAD SURFACE RIDGE COVERS THE E ATLC ANCHORED BY A
1035 MB HIGH N OF THE AZORES. A COLD FRONT MAY MOVE INTO THE NW
PORTION FRI SLOWLY MOVING E ACROSS THE WATERS N OF 27N THROUGH
SAT.

FOR ADDITIONAL INFORMATION PLEASE VISIT
WWW.HURRICANES.GOV/MARINE

$$
PAW



Quoting BahaHurican:
I can appreciate your feeling because I've been there. I've learned you can let the insensitivity get to you [and it can] or you can take what is helpful to you from what is said and ignore the rest. A lot of times the insensitivity COMES from ignorance, so this blog becomes an opportunity to sensitize others to your experience and to the reality they may not understand. We have a lot of youngsters here who genuinely need to learn about walking in others' shoes. Additionally, while wunderbloggers' comments are often ignorant and insensitive, that doesn't mean that positive change cannot come from them. And sometimes that change starts with reducing one person's ignorance. A lot depends on what we as bloggers are willing to accept.

I am glad you made your comment, because it is easy for those of us outside the situation to react as if it is some kind of "test case" and ignore the human tragedy of such events. Thanks for reminding us and keeping us humane.




I was looking at a site that listed the worst tornados in history, and we have definitely saved many lives over the past 50 years with the advancements is science and warnings. It was surprising to see that several tornados in the late 1800's, early 1900's killed several hundred people.

The teachers and the others in the school yesterday did everything they could. Nothing you can do will protect you from the "worst" of whatever natural disaster that occurs can create.
Just wow... Incredible damage. Prayers for Oklahoma and everyone else under the gun today...
Honestly, the best solution to protect our children in schools isn't to send them home. What needs to be done is a building code change in tornado prone areas where "bunker rooms" are created. Going underground is expensive and not always an option in certain areas, but you can make an above ground room strong enough to even survive an EF5 tornado with enough concrete and rebar. An interior,ground level classroom should be picked for the extra structural reinforcement, multiple rooms if the school has a high student count, and all students should report to those designated classrooms during tornado events. THIS is the best solution, not sending children home to houses that are not structurally sound and have a high chance of failure with anything EF3 or stronger.


Having a WR-100 is a must.




Quoting BahaHurican:
Something I have been speculating about to myself is whether there is something about the geography / topography of that part of OK that lends itself to numerous high velocity tornadoes. However, I don't have any statistical data on # of tornadoes and EF4-EF5 tornadoes that have affected the area.

Is it possible that the "lay of the land" could contribute to torque potential?


I found this comment on the NYT article:

Has anyone considered the correlation of the windspeed vectors for this storm in Moore (and hence relative helicity) with the local topography? A quick review of the topographical map of Oklahoma shows that it is relatively flat with the exception of a steady downward gradient from west to east coming down from the Rockies.

Could a near perfect alignment of gradually downsloping topography with the helicity axis be the root cause of tornadic activity that is very strong before it achieves significant net vertical vorticity? Thus allowing it to become a 'tornado' before the downdraft has tightened and focused the width of the base?

Is it possible that the width of a devastating funnel like this could come down to something as simple as a vector product between wind sheer and topographical vectors?
This is a really awesome video. While interviewing an elderly woman who made it out from underneath her destroyed home, the reporter spotted her dog underneath the rubble. Amazing.

Link
In Wichita Kansas, on May 3rd, 1999 we had a big tornado too. It lifted a half mile south of my house to pass directly over my head at tree top level. I knew the exact moment it passed over because my ears popped. The noise was horrendous. It took just the tops off the trees on my block. We were very lucky. South Wichita was not.

Afterwards, when I came outside, the debris it left was amazing. Every square inch outside was full of small ground up bits of buildings. Tiny bits of shingles, wood, insulation were everywhere. We had to rake and shovel it out of our yards for weeks. Of course there were larger pieces of debris as well. I had two vent caps, and a few plastic lawn chairs in my yard along with all the wood, shingles and insulation, and there was an aluminum shed left in the street. But I'll never forget how small the pieces of most of the debris had been ground up.

Among the debris, we found papers, envelopes, photographs... with Moore, OK addresses on them. Moore is approximately 170 miles south of Wichita. The storm system carried the debris all that way.

All I could think yesterday was, Oh no! Not again! This is just horrific.

I've been watching coverage between CNN and TWC. On TWC, I've heard Dr. Greg Forbes say the tornado was possibly a mile and a half wide at its largest. And they reported a debris ball had been seen on radar that was over 2 miles wide. CNN keeps reporting that the tornado was two miles wide. Since I've yet to hear a meteorologist quoted who says it was that big, I'm assuming many of the CNN reporters have misunderstood the size, thinking the debris ball is the actual size of the tornado. Has anyone heard anything official about that yet?

The National Weather Service has issued Severe Thunderstorm Watch
202 in effect until 7 PM CDT this evening for the following areas

In Oklahoma this watch includes 10 counties

In east central Oklahoma

Muskogee Okfuskee Sequoyah

In northeast Oklahoma

Okmulgee

In southeast Oklahoma

Haskell Latimer Le Flore
McIntosh Pittsburg Pushmataha

This includes the cities of... Antlers... Clayton... Eufaula...
McAlester... Muskogee... Okemah... Okmulgee... Poteau... Sallisaw...
Stigler and Wilburton.



Gotta run, all. Ya'll keep up the good work and try to minimize the other stuff...
The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
southern Oklahoma
northwest Texas

* effective this Tuesday morning and evening from 1045 am until
700 PM CDT.

* Primary threats include...
numerous damaging wind gusts to 70 mph likely
several large hail events with a few very large hail events to 2
inches in diameter possible

The Severe Thunderstorm Watch area is approximately along and 45
statute miles north and south of a line from 45 miles southwest
of Altus Oklahoma to 15 miles north northeast of Poteau Oklahoma.
For a complete depiction of the watch see the associated watch
outline update (wous64 kwns wou2).

Precautionary/preparedness actions...

Remember... a Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings. Severe thunderstorms can and occasionally
do produce tornadoes.


Other watch information... continue... ww 201...

Discussion... the northern flank of an evolving mesoscale convective
system is expected to overspread southern Oklahoma late this
morning... through the afternoon hours. Severe hail may be the
primary severe threat in storms approaching the Oklahoma City
metropolitan area through midday... but potentially damaging wind
gusts may become the predominant severe threat in a swath closer to
the Red River this afternoon.

Aviation... a few severe thunderstorms with hail surface and aloft
to 2 inches. Extreme turbulence and surface wind gusts to 60
knots. A few cumulonimbi with maximum tops to 500. Mean storm
motion vector 27035.


... Kerr
Quoting BahaHurican:
I don't think he meant it like that. Breathe out. It's easy to feel like casting blame, even if it's only blaming people you think are blaming people.

He made it quite clear he did mean it like that, and there's no other way to construe a blame of people sending "their kids" to school than a blame of the parents. I specifically mentioned, in reply to his comment that suggested I must blame someone, that nobody can be blamed for natural disasters. Please try reading the conversation before you accuse me of assigning blame to anyone.
Quoting yonzabam:


I found this comment on the NYT article:

Has anyone considered the correlation of the windspeed vectors for this storm in Moore (and hence relative helicity) with the local topography? A quick review of the topographical map of Oklahoma shows that it is relatively flat with the exception of a steady downward gradient from west to east coming down from the Rockies.

Could a near perfect alignment of gradually downsloping topography with the helicity axis be the root cause of tornadic activity that is very strong before it achieves significant net vertical vorticity? Thus allowing it to become a 'tornado' before the downdraft has tightened and focused the width of the base?

Is it possible that the width of a devastating funnel like this could come down to something as simple as a vector product between wind sheer and topographical vectors?

I noted the same upslope towards the W and NW upon perusal of the OK topo map.

I, personally, noted the inflow channel vector alignment as being inline with the upslope.

Possible(edit: small?) impact on lifting a parcel into a favorable environment with an additional component of orographic lift as the capping layer is simultaneously broken, IMO.
JeffMasters has created a new entry.
645. flsky
Quoting Tribucanes:
We are a brave and resilient people. As American's we're not going to run from tornadoes in our heartland. Many have had families for generations there, their jobs are there, and their kid's friends are there. Americans rebuild and come back stronger than before. Shall we abandon the coasts in the Gulf and Atlantic? Shall we flee from California's earthquakes? Like Scott Lincoln said, it can happen anywhere anytime, and to live in fear is no freedom. Shall we flee Alabama/Arkansas/Missouri/Kansas/Oklahoma etc. where tragic tornado events have happened with regularity? No way, in America we overcome.


People are like this all over the world.
Quoting seminolesfan:

I noted the same upslope towards the W and NW upon perusal of the OK topo map.

I, personally, noted the inflow channel vector alignment as being inline with the upslope.

Possible(edit: small?) impact on lifting a parcel into a favorable environment with an additional component of orographic lift as the capping layer is simultaneously broken, IMO.


It's definitely an interest addition to the conversation. It's been considered before, but I'd love to see some of the VORTEX 2 data worked into this. Even if it's only a component, it can mean the difference in intensity or size of a tornado.

It may not neccessarily be the upslope component of the inflow that is the only local topographical effect. Also to consider is the stretching of horizontal vorticity, which tightens the circulation in areas where the slope is increasing.
Quoting Patrap:


Having a WR-100 is a must.





Patrap,
Any idea whatever happened to Reecom? I bought one of their units a few years ago and now I can't find anybody that sells the brand.
Quoting EricSpittle:

He made it quite clear he did mean it like that, and there's no other way to construe a blame of people sending "their kids" to school than a blame of the parents. I specifically mentioned, in reply to his comment that suggested I must blame someone, that nobody can be blamed for natural disasters. Please try reading the conversation before you accuse me of assigning blame to anyone.
I did see the conversation - after I had posted my comment. I certainly had no intention of accusing you of anything. However, if that is the way you construed it...

My point is that one can become over-emotional in this context.
Quoting drg0dOwnCountry:
Oklahoma tornado: is climate change to blame?
The Oklahoma twister was a 'classic look', but the data shows we are experiencing more volatility in the US tornado season
a href="http://www.guardian.co.uk/world/2013/may/21/ moore-oklahoma-tornado-climate-change" target="_blank" onclick="s_objectID="http://www.guardian.co.u k/world/2013/may/21/moore-oklahoma-tornado-climate -change_1";return this.s_oc?this.s_oc(e):true" rel="nofollow">Link
An important point from the Guardan article you lined to:

The point is that all the normal ingredients were there that allowed an EF-4 tornado to spawn and strike. (Examination of the storm site may cause an upgrading to EF-5.) It happened in tornado alley, where warm moist air from the Gulf of Mexico often meets dry air from the north and Rocky mountains for maximum instability. There wasn't anything shocking about this from a meteorological perspective. It was, as a well-informed friend said, a "classic" look.

The long-term weather question is whether or not we'll see more or less of these "classic" looks in our changing meteorological environment. It turns out that of all the weather phenomena, from droughts to hurricanes, tornadoes are the most complex to answer from a broader atmospheric trends point of view. The reason is that a warming world affects the factors that lead to tornadoes in different ways.
Quoting BahaHurican:
I can appreciate your feeling because I've been there. I've learned you can let the insensitivity get to you [and it can] or you can take what is helpful to you from what is said and ignore the rest. A lot of times the insensitivity COMES from ignorance, so this blog becomes an opportunity to sensitize others to your experience and to the reality they may not understand. We have a lot of youngsters here who genuinely need to learn about walking in others' shoes. Additionally, while wunderbloggers' comments are often ignorant and insensitive, that doesn't mean that positive change cannot come from them. And sometimes that change starts with reducing one person's ignorance. A lot depends on what we as bloggers are willing to accept.

I am glad you made your comment, because it is easy for those of us outside the situation to react as if it is some kind of "test case" and ignore the human tragedy of such events. Thanks for reminding us and keeping us humane.

Quoting BahaHurican:
I can appreciate your feeling because I've been there. I've learned you can let the insensitivity get to you [and it can] or you can take what is helpful to you from what is said and ignore the rest. A lot of times the insensitivity COMES from ignorance, so this blog becomes an opportunity to sensitize others to your experience and to the reality they may not understand. We have a lot of youngsters here who genuinely need to learn about walking in others' shoes. Additionally, while wunderbloggers' comments are often ignorant and insensitive, that doesn't mean that positive change cannot come from them. And sometimes that change starts with reducing one person's ignorance. A lot depends on what we as bloggers are willing to accept.

I am glad you made your comment, because it is easy for those of us outside the situation to react as if it is some kind of "test case" and ignore the human tragedy of such events. Thanks for reminding us and keeping us humane.

Baha, I ain't bending on this. Sunday page upon page of comments here criticized an OKC TV broadcaster who has followed storms here for 20 years and saved many lives - in the middle a milder episode of "Death by Tornado." In other words, this went on in the thick of things while others tried to discuss a long-tracking tornado. That would not happen in huricane season, and yet admin chose to let it go on. Later Sunday, I tried the "educate the ignorant" approach, nicely :) and got attacked for it. Last night, after not being on wu all day, I came to this blog and saw bloggers arguing over why this tornado shouldn't be designated this or that at the same moment the drowning death of seven Moore, OK children was announced. I used the "eat my shorts approach" and got banned for 12 hours.

I spent many days of my life early last year trying to educate the youngsters (as you call them on) about official resources for severe weather. I've enjoyed watching the youngins' self-taught knowledge and severe weather interest of grow and bloom. Truth is, many of them are more sensitive to others' shoes than are some older wubloggers whose full-grown egos paint a broad picture of their judgmental insensitivity.

Letting insensitivity get to me and speaking up about it is one of my better traits. I wouldn't change it for the all the Cocoa Puffs in Publix.
Can someone enlighten me.. what is the difference between negative cloud to ground and positive cloud to ground lightning. It seems there are more negative to ground lightning strikes in volatile cells..