Two EF-5 tornadoes confirmed from last week's outbreak; record Ohio River flood

By: Dr. Jeff Masters , 1:23 PM GMT on May 02, 2011

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Damage surveys and the hunt for missing victims continues today in the areas devastated by last week's historic tornado outbreak. With the death toll in the 340 - 350 range, the April 25 - 28 tornado outbreak has surpassed the April 3 - 4, 1974 Super Outbreak (315 killed) as the deadliest U.S. tornado outbreak of the past 50 years. Hardest hit was Alabama, with 249 deaths; Tennessee and Mississippi had 34 deaths each, and deaths were also reported in Arkansas, Georgia, Virginia, Louisiana, and Ontario, Canada. Twenty-eight separate tornadoes killed people. According wunderground's weather historian, Christopher C. Burt, in his post The World's Deadliest Tornadoes, only the death toll of the great Tri-State tornado outbreak of 1925 (747 killed) and the 1936 Tupelo-Gainsville tornado outbreak (454 killed) were greater. These outbreaks both occurred during an era before Doppler radar and tornado warnings. Had last week's outbreak occurred back in those days, I expect the death toll would have been in the thousands. The National Weather Service provided warning times of 15 - 30 minutes for all of last week's killer storms, allowing time for most people to get to safe shelters.


Figure 1. MODIS satellite image from NASA's Aqua satellite taken on Friday, April 29, 2011, showing the damage paths of three of Wednesday's tornadoes in Alabama.


Figure 2. Damage paths of Wednesday's tornadoes as compiled by the National Weather Service office in Birmingham, Alabama.

Damage surveys will continue for another week, so it is uncertain exactly how many tornadoes were spawned in last week's outbreak. The confirmed count is already at 146, which would make it the 4th largest tornado outbreak in history. The total is likely to surpass the 155 confirmed tornadoes logged during the April 14 - 16, 2011 tornado outbreak. According to a list of tornado outbreaks maintained by Wikipedia, only two other tornado outbreaks have had as many as 150 twisters--the May 2004 outbreak (385), and the May 2003 outbreak (401). So, remarkably, two of the top four outbreaks in history occurred within two weeks of each other. In addition, the period from 8am April 27 - 8am April 28 during last week's outbreak has a good chance of breaking the record for most tornadoes in a 24-hour period, which is currently 148 (set in the April 3 - 4, 1974 Super Outbreak.)

Two EF-5 tornadoes confirmed
Damage surveys have confirmed that last week's April 25 - 28 outbreak spawned at least eleven violent EF-4 tornadoes (winds 166 - 200 mph) and two EF-5 tornadoes (winds greater than 200 mph.) This is only the 5th time since tornado ratings began in 1950 that two top-end tornadoes have occurred on the same day. The last time was on March 13, 1990 in Kansas. An EF-5 with 205 mph winds hit Smithville, Mississippi at 3:44pm EDT on Wednesday. The tornado's path was only 3 miles long, but was 1/2 miles wide and did extreme damage. Fifteen were killed, 40 injured, and 166 buildings destroyed. Some well-built modern 2-story homes that were bolted to their foundations were completely destroyed, leaving only the foundation. This type of damage is characteristic of an EF-5 tornado with 205 mph winds. The Smithville tornado is the first EF-5 tornado in Mississippi since the Candlestick Park tornado of March 3, 1966. The other EF-5 tornado of the day, the Hackleburg tornado, touched down in Northwest Alabama in Marion County at 3pm CDT, and devastated the towns of Phil Campbell and Hackleburg. This tornado killed at least 25 people. Meteorologist Gary Dobbs, with WAAY-TV since 1984, spotted this tornado from his car and was unable to get to his storm shelter. While his house was destroyed around him, Dobbs was thrown 40 feet from the house. The door of the storm shelter blew off, and none of the friends therein were seriously injured. Dobbs required hospitalization. One other tornado that may get an EF-5 rating is the violent Tuscaloosa/Birmingham tornado, which killed at least 66 people and injured over 1000. It was the deadliest tornado in the U.S. since 1955, when 80 people died in Udall, Kansas. This tornado had a path length of 80.3 miles, and has been preliminarily rated at high-end EF-4 with 190 mph winds. The Tuscaloosa-Birmingham tornado is likely to be the most expensive tornado of all-time, and damage from the April 25 - 28 outbreak is likely rank as the most expensive tornado outbreak in history. Insured damages have been rated at $2 - $5 billion, and uninsured losses will be several billion more. The previous most expensive tornado outbreak in history was the $3.5 billion price tag, in 2005 dollars, of the April 3 - 4, 1974 Super Outbreak .


Figure 3. Radar reflectivity image of the Hackleburg, Alabama tornado of April 27, 2011, a few minutes after it devastated the town of Hackleburg, Alabama (white cross at center of image.) The Hackleburg tornado was rated an EF-5 with greater than 200 mph winds.


Figure 4. Remarkable video of the tornado that hit Tuscaloosa, Alabama. Beginning at about 2:30 into the video, one can see the ominous mini-vorticies and cloud of debris that encircled the tornado.

Unprecedented flooding on Ohio River
Last week's storm system, in combination with heavy rains earlier this month and over past 24 hours, pushed the Ohio River at Cairo, Illinois to 60.6 feet at 1am CDT May 1. This is the highest flood in history, besting the 59.5' mark of 1937. Additional heavy rains of 2 - 4 inches are expected over the next five days, and the river is not expected to crest until Wednesday, at a height of 61.5 feet. As the record flood waters from the Ohio River pour into the Mississippi and are joined by melt water from the this winter's record snow pack over the Upper Mississippi, all-time flood heights are likely to be exceeded at many points along a 400-mile stretch of the Mississippi below its confluence with the Ohio. I'll have a more detailed look in my next post.

Jeff Masters

Bartow County Georgia Tornado Damage 10 (marlin01)
April 28th, 2011
Bartow County Georgia Tornado Damage 10

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Re. #162. That's looking pretty good for 1st week of May....

You know, the various disasters and excitements are coming so fast it's almost making my head spin....
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Quoting HurricaneDevo:
I noticed there was a convenient burial at sea.
Exactly. Kinda hard to set up a venerable shrine to this ... man ... if you can't figure out where the body is.... sorry, no holy relics like Bin Laden's knuckle bones.... no tours, etc....

Quoting emcf30:
Average price per gallon in Natrona County, Wy. $3.40

Lowest I have found in Country
It's because they're pumping it right out of the ground over in the NE corner of the county, plus refining it right there....

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is this the first tropical wave of the season?
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First wave of the season candidate?

Member Since: August 24, 2010 Posts: 19 Comments: 4358
Quoting Patrap:
"If it keeps on raining, Levee's gonna break"..
gotta love that led zep
Member Since: August 24, 2010 Posts: 19 Comments: 4358
"If it keeps on raining, Levee's gonna break"..
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Quoting wayfaringstranger:
Greetings from Ringgold GA and Apison TN. The damage here is tremendous as we have confirmed an EF4 tornado in this area.

My family and I are safe and uninjured however there were several friends and families just less than 5 to 7 miles away who lost their homes and businesses.

Downtown Ringgold and the schools were obliterated.

I appreciate any prayers for these areas.

Hey, glad to see you well and in the blog! That Ringgold / Apison tornado was something else... I was reading the report. Your home is OK, I trust!
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Never mind, twincomanchee. Ifn I hafta explain a joke...
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Evening everybody.... what a crazy day! But at least I made it home...

I see they're going to blow the levee.... After seeing the continued rain over the area, I guess one couldn't expect anything different.

I'm wondering if there's any benefit for the farmland, i.e. from having silt added... [trying to find a good side].
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Quoting twincomanche:
The lack of energy policy and the anti drilling policy have led to this. There is no other conclusion that can be reached. Now we get to deal with it. It has little to do with supply and demand.

The lack of real fuel standards, the inability of many in government to let go of the Big Oil cash cow enriching them and move quickly toward alternatives, and the unwillingness of many Americans to quit living in the fantasyland of cheap and endless oil are all a large part of the problem.

One thing that isn't part of the problem is ExxonMobil's not being allowed to defile a pristine wilderness (ANWR) by drilling for a few weeks or months of crude.

USA Today quotes Dr. Masters in the first paragraph. Nice. ;-)
Member Since: November 8, 2009 Posts: 4 Comments: 13744
MISSISSIPPI RIVER COMMISSION
VICKSBURG, MISSISSIPPI
May 2, 2011
Everyone I have talked with -- from boat operators, to labors, scientist and engineers, and truck drivers have all said the same thing – “I never thought I would see the day that the river would reach these levels”.
We have exceeded the record stage already at Cairo. We are on a course to break records at many points as the crest moves through the system. Sometimes people celebrate with “records” – but not this time. Making this decision is not easy or hard – it’s simply grave – because the decision leads to loss of property and livelihood –either in a floodway -- or in an area that was not designed to flood. The state of Missouri has done a superb job of helping people escape the ravages of water in the floodway. But other places – not designed to flood have had no warning if their areas succumb to the pressures of this historic chocolate tide.
I spent last night on the river … lashed to an anchor barge in the current near the top of the floodway. The rains continued to pound the deck of the Motor Vessel. The cold winds moved us around – and the current and water levels kept increasing as the rain storms continue to grow over the Ar/Miss/Ohio/TN Watershed.
So, with the tool that has withstood many tests: the test of operation in 1937; decades of challenges that resulted in the 1986 Operation Plan; reviews and numerous unsuccessful court challenges – I have to use this tool. I have to activate this floodway to help capture a significant percentage of the flow.
I don’t have to like it but we must use everything we have in our possession, in the system to prevent a more catastrophic event. So, today, I give the order to operate the Floodway
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Supply and demand. Apparently folks ain't been eatin' enough beans&cabbage.
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Quoting NICycloneChaser:


Gas is $10.33 per gallon in Northern Ireland.
It is US$7.38 in the Cayman Islands and that is for regular. :(
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BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
530 PM CDT MON MAY 2 2011

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR...
NORTHERN LAWRENCE COUNTY IN MIDDLE TENNESSEE...
SOUTHEASTERN LEWIS COUNTY IN MIDDLE TENNESSEE...
SOUTHWESTERN MAURY COUNTY IN MIDDLE TENNESSEE...

* UNTIL 600 PM CDT

* AT 530 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED 12 MILES NORTHWEST OF LAWRENCEBURG...AND MOVING
NORTHEAST AT 40 MPH.
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We were discussing the impact of Facebook and Twitter earlier and how fast info is made pubic thru social media. It has been 30 minutes since the Army Corp of Engineers told of the plans to blow the levee. TWC and the local news outlets in the area have not mentioned it. Just saw a report on TWC from Cario,IL with Mike Seidel just state still no word on the operation.
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River stages
Location Current Forecast
Cape Girardeau
Mississippi River 46.18 ft.
Major flooding 46.30 ft.
Tue 7am
Chester
Mississippi River 39.70 ft.
Major flooding 39.80 ft.
Mon 7pm
Thebes
Mississippi River 44.90 ft.
Major flooding 45.70 ft.
Tue 7pm
New Madrid
Mississippi River 46.27 ft.
Major flooding 48.20 ft.
Wed 1pm
Caruthersville
Mississippi River 45.31 ft.
Major flooding 46.50 ft.
Wed 1pm
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Quoting TampaSpin:



Field triage ....better to flood a few then to have an epidemic flood


Gotta do what you gotta do. I am on their face book page
some people are confused why are they doing it at night. The only thing I can tell they need to get some additional evacuations completed. There is also a lot of cattle in the area. That's a logistical nightmare to move that much livestock
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Member Since: July 15, 2006 Posts: 176 Comments: 55671
Quoting emcf30:


Yeah, we should find out in a few minutes if they are going activate the spillway buy blowing the levee. Press conference on the way now



Field triage ....better to flood a few then to have an epidemic flood
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They are going to blow it
Birds Point New Madrid Floodway Joint Information Center
‎"We expect to execute the project between 9:00 p.m and midnight tonight"
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Quoting snotly:
Won't be long before they fail. The water will scour the sides and create a break in the levee if it flows over the top like that. If this were a prolonged event then it would boil up underneath due to hydraulic pressure.



Yeah, we should find out in a few minutes if they are going activate the spillway buy blowing the levee. Press conference on the way now
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This gotta stop soon!
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Won't be long before they fail. The water will scour the sides and create a break in the levee if it flows over the top like that. If this were a prolonged event then it would boil up underneath due to hydraulic pressure.

Quoting emcf30:

This photo shows natural overtopping at the frontline levee on the Mississippi River on the Birds Point New Madrid Floodway at 2pm
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This photo shows natural overtopping at the frontline levee on the Mississippi River on the Birds Point New Madrid Floodway at 2pm
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Maybe the worst spot!!
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Picture of President Obama and his inner circle watching the operation live to kill Bin Laden.

I can imagine the reaction as they went into Bin Laden's bedroom and saw his face for the first time, then as he was shot dead :)

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How ENSO Impacts the Northern Hemisphere Pattern



Good article from 28storms for those who are interested Link
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134. Skyepony (Mod)
Quoting Some1Has2BtheRookie:


I heard that Bill Paxton and Helen Hunt will be joining in too. ........ Sorry, Skye. I couldn't resist.

I know they have a lot of ground to cover and a lot of evidence to sift through. I believe the more eyes they have the better the assessment they can make of it all.


Yeah they've got to getting creative to be getting these confirmed so quick.

The '74 outbreak was studied for like 15 years after. We should see some papers & thesis out of this.
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Average price per gallon in Natrona County, Wy. $3.40

Lowest I have found in Country
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Quoting RufusBaker:
The two tone baker be up over in a here!!!!
rufus stop being a dufus
Member Since: July 15, 2006 Posts: 176 Comments: 55671
Quoting IKE:
From CNN....
Gas could top $4 nationwide this week
................................................. ................................................

It's $3.95.9 here at my location.....per gallon.



Gas is $10.33 per gallon in Northern Ireland.
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Quite a few "over toppings" and iminent levee breaches today :(

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1123 AM CDT MON MAY 2 2011

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
LAWRENCE COUNTY IN SOUTHEAST ILLINOIS...

* UNTIL MIDNIGHT CDT TUESDAY

* AT 1111 AM CDT...EMERGENCY MANAGEMENT AND LEVEE COMMISSIONERS
REPORTED OVERTOPPING OF THE CROSS LEVEE IN SOUTHEASTERN LAWRENCE
COUNTY. THE LEVEE HAS NOT YET BREACHED...BUT IS OVERTOPPING IN
MULTIPLE LOCATIONS IN COMBINATION WITH VERY HIGH RIVER LEVELS.
ILLINOIS ROUTE 33 FROM HEATHSVILLE TO WESTPORT...AND ALL ROUTES EAST
OF 33...ARE CLOSED TO ALL TRAFFIC. SAND BARRENS ROAD WEST OF ST
FRANCISVILLE IS ALSO CLOSED.

------------------------------------------------- -----


BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PADUCAH KY
330 PM CDT MON MAY 2 2011

THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A

* FLASH FLOOD WARNING FOR THE SMITHLAND RIVER FRONT LEVEE IN
SOUTHERN LIVINGSTON COUNTY IN WEST KENTUCKY.

* UNTIL 315 AM CDT TUESDAY

* AT 321 PM CDT...THE IMMINENT FAILURE OF THE SMITHLAND RIVERFRONT
LEVEE...LOCATED AT THE INTERSECTION OF COURT STREET AND RIVERFRONT
DRIVE...WAS REPORTED BY LIVINGSTON COUNTY EMERGENCY MANAGEMENT.
WATER WAS LEAKING FROM THE LEVEE AND A BREACH MAY BE POSSIBLE WITHIN
SEVERAL HOURS. EVACUATIONS ARE OCCURRING NOW.

PERSONS IN SOUTHERN LIVINGSTON COUNTY THAT COULD BE IMPACTED BY A
LEVEE FAILURE SHOULD SEEK HIGHER GROUND IMMEDIATELY.

------------------------------------------------- ---


BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PADUCAH KY
234 PM CDT MON MAY 2 2011

THE NATIONAL WEATHER SERVICE IN PADUCAH IS EXTENDING A

* FLASH FLOOD WARNING FOR A BREACH OF THE FAYVILLE LEVEE IN...
ALEXANDER COUNTY IN SOUTHERN ILLINOIS...

* UNTIL 230 PM CDT WEDNESDAY

* AT 228 PM CDT...EMERGENCY MANAGEMENT CONTINUED TO REPORT THAT THE
A NEARLY 100 FOOT SECTION OF THE FAYVILLE LEVEE...JUST SOUTH OF THE
RAILROAD BRIDGE AT THEBES...CONTINUES TO OVERTOP. THIS WILL PRODUCE
ADDITIONAL FLOODING THAT WILL LIKELY CLOSE PARTS OF HIGHWAY 3. IT
WILL ALSO AFFECT THE COMMUNITIES OF OLIVE BRANCH AND EVENTUALLY
CAIRO.

-----------------------------------------------

...A FLASH FLOOD WARNING FOR RAPID RIVER RISES ON THE SAINT FRANCIS
RIVER REMAINS IN EFFECT UNTIL 1130 AM CDT TUESDAY FOR EASTERN
BUTLER...SOUTHEASTERN WAYNE AND SOUTHWESTERN STODDARD COUNTIES IN
SOUTHEAST MISSOURI...

AT 109 PM CDT...EMERGENCY MANAGEMENT AND OTHER OFFICIALS ARE
REPORTING THAT WATER RELEASES ARE UNCONTROLLED...AS WATER CONTINUES
TO OVERTOP THE SPILLWAY AT LAKE WAPPAPELLO.

THE LEADING EDGE OF ANOTHER ROUND OF MODERATE TO HEAVY RAINFALL IS
EXPECTED TO INCREASE IN INTENSITY DURING THE AFTERNOON AND OVERNIGHT
HOURS. THIS WILL ONLY WORSEN CURRENT CONDITIONS ALONG THE SAINT
FRANCIS RIVER.

IT SHOULD BE NOTED THAT HIGHWAY T DOWNSTREAM OF THE DAM HAS WASHED
OUT...AND IS IMPASSABLE.

THE MISSOURI DEPARTMENT OF TRANSPORTATION HAS EXPRESSED SERIOUS
CONCERN THAT THE CURRENT FORECAST RECORD STAGE OF 28 FEET NEAR FISK
WILL PLACE PART OF HIGHWAY 60 DOWNSTREAM OF THE LAKE WAPPAPELLO DAM
AT RISK. IF YOU PLAN TRAVEL IN OR NEAR THIS AREA...BE SURE HAVE
ALTERNATE ROUTES IN MIND TO REACH YOUR DESTINATION.

FLOOD WATERS ARE EXPECTED TO CONTINUE MOVING DOWN THE SAINT FRANCIS
RIVER AND ITS TRIBUTARIES FROM LAKE WAPPAPELLO DOWNSTREAM...POSSIBLY
TO THE MISSOURI STATE LINE. [b]WATER LEVELS OF THIS MAGNITUDE ON THE
SAINT FRANCIS RIVER HAVE NOT BEEN EXPERIENCED IN THIS AREA SINCE
1945.[\b]

------------------------------------------------- ----

BULLETIN - EAS ACTIVATION REQUESTED
CIVIL EMERGENCY MESSAGE
OFFICE OF THE PRAIRIE COUNTY JUDGE
RELAYED BY NATIONAL WEATHER SERVICE LITTLE ROCK AR
833 AM CDT MON MAY 2 2011

THE FOLLOWING MESSAGE IS TRANSMITTED AT THE REQUEST OF THE OFFICE
OF THE PRAIRIE COUNTY JUDGE.

PRAIRIE COUNTY AUTHORITIES HAVE ISSUED AN EVACUATION NOTICE FOR
RESIDENTS IN THE FLOOD PRONE AREAS EAST OF THE WHITE RIVER AT DES
ARC AND BISCOE. THE ROADS IN THE AREA WILL SOON BE IMPASSABLE DUE
TO FLOODING.
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During the 24-hour period from 8:00 a.m. EDT April 27 to 8:00 a.m. EDT April 28, The National Weather Service (NWS) estimates there were a total of 312 tornadoes.

The largest previous number of tornadoes on record in one event occurred from April 3-4, 1974, with 148 tornadoes

Totally AMAZING
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The two tone baker be up over in a here!!!!
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Quoting Neapolitan:
Updated tornado stats just out. The number keeps going up.


I have been through Hurricane Alicia, Rita and Ike. I have also endured TS Allison. I have even had some near misses with tornados and water spouts.
We knew Allison was coming and there was no panic. We did not expect it to stall and then reverse course on us as it did. Still there was no panic, just a lot of grief later.
The hurricanes were a bit different. No one really panicked over Alicia. Trees and telephone poles were her most numerous victims.
Hurricane Rita was another story. We had just witnessed what Hurricane Katrina had done further up the coast with all of its death and destruction. Panic was a given for Rita. I am sure we all remember the logistical nightmare that Rita brought us in this area. 20 hour traffic jams. No gas, food, water or shelter for those that were trying to escape from Rita's path.
Hurricane Ike was a monster of a storm. Huge, powerful and ever closing in on us. The destruction along the coast rivaled Carla and Katrina. The damage as far inland as the damage reached was amazing. There was strong wind damage as far north as Conroe. Conroe is 40 miles north of Houston.
Now, I think about what these people that just went through these devastating tornadoes must have felt. Very little to no warning and little, but powerful, monsters all around them. No place to hide. No time to run. I can not imagine what they have just endured.

My heart goes out to them all. May they never have to endure again such destruction and pain. Once is enough, in any one lifetime. Give them strength, a shoulder to cry on, a place to rest their head and a helping hand. They are going need all of these and more.
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126. IKE
From CNN....
Gas could top $4 nationwide this week
................................................. ................................................

It's $3.95.9 here at my location.....per gallon.

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bad....where you from? i wanna know what area not to allow my children near as for fear theyll learn from those with the same mentality...

this flooding is crazy...really hoping this setup breaks down...dont know how many more 2-4 day rainy periods every week the areas can handle ....and severe weather needs to take a break as well....

hows everyone doing?
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Birds Point New Madrid Floodway Joint Information Center
Maj. Gen Michael J. Walsh, President of the Mississippi River Commission, will announce his decision regarding operation of the Floodway at a press conference at 5 p.m. today (May 2) at the Checkpoint on the Birds Point-New Madrid Floodway levee road. A represent from COL Reichling’s staff will also be present to answer questions.
32 minutes ago

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Quoting BadHurricane:


"At least 919,967 people have
been killed in Afghanistan and Iraq
since the U.S. and coalition attacks, based on lowest credible estimates."

Really blessed!


I take it you're placing the responsibility of all 919,967 Murder/Death/Kill on just the US & coalition forces?
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Quoting Skyepony:
I wondered if NWS was pulling in extra help with the tornado surveys. Looks like they did..

The task is so big, he said, that he is calling fellow meteorologists out of retirement to help, hoping their 30 or 40 years of experience will provide an extra level of expertise.


I heard that Bill Paxton and Helen Hunt will be joining in too. ........ Sorry, Skye. I couldn't resist.

I know they have a lot of ground to cover and a lot of evidence to sift through. I believe the more eyes they have the better the assessment they can make of it all.
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121. beell
Announcement on Birds Point coming at 5 p.m.
Southeast Missourian

Southeast Missourian-Flood of 2011 Webpage


The breach would flood about 200 acres of prime farm land in Mississippi County, Mo., in order to relieve pressure on other points of the river flood-control system, including at Cairo, Ill.

Quite the inaccuracy there from what I have read. The New Madrid Floodway encompasses close to 130,000 acres.

Funny thing. The floodway is open at its southern end near New Madrid. High water in the Mississippi causes backwater flooding. Some degree of flooding occurs almost every year. At very high water levels almost 2/3rds of the floodway go underwater.
Bird's Point - New Madrid Floodway
Member Since: September 11, 2007 Posts: 145 Comments: 16919
Updated tornado stats just out. The number keeps going up. Yes, they are still preliminary estimates, but they are increasingly based on actual ground-based damage surveys in conjunction with observations of radar and satellite imagery:

--NOAA's preliminary estimate is that there were 362 tornadoes during the entire outbreak from 8:00 a.m. EDT April 25 to 8:00 a.m. April 28, 2011.

--During the 24-hour period from 8:00 a.m. EDT April 27 to 8:00 a.m. EDT April 28, The National Weather Service (NWS) estimates there were a total of 312 tornadoes.

--Expert analysis by NOAA Research and the National Weather Service of the fatality information indicates that at least 350 people were killed during the entire outbreak from 8:00 a.m. EDT April 25 to 8:00 a.m. April 28.

--There were 340 fatalities during the 24-hour-period from 8:00 a.m. April 27 to 8:00 a.m. April 28.

--The April 26-28 period had the most people killed by tornadoes in a two-day period since April 5-6, 1936, when 454 people were killed, mostly in Tupelo, Mississippi, and Gainesville, Georgia.

--April 27, 2011, is the deadliest single day for tornadoes since the March 18, 1925, tornado outbreak that had 747 fatalities across 7 states (including the Tri-State Tornado).

--The Tuscaloosa-Birmingham tornado during the April 2011 event caused at least 65 fatalities. This tornado had a maximum width of 1.5 miles and a track 80 miles long. These are the most fatalities from a single tornado in the United States since May 25, 1955, when 80 people were killed in a tornado in southern Kansas with 75 of those deaths in Udall, Kansas. (The deadliest single tornado on record in the United States was the Tri-State tornado [Mo., Ill., Ind.] on March 18, 1925, when 695 died.)

--Ongoing (preliminary) List of Tornadoes by EF Rating (EF3 to EF5):

EF5: 2
EF4: 11
EF3: 21

--NWS's preliminary estimate is that there have been more than 600 tornadoes thus far during the month of April 2011.

-The previous record number of tornadoes during the month of April was 267 tornadoes set in April 1974.
-The previous record number of tornadoes during any month was 542 tornadoes set in May 2003.
-The average number of tornadoes for the month of April during the past decade is 161.
-The overall monthly average number of tornadoes for the past decade is 106.

- - - - - - - - - -

If the estimated counts come even close to being right, last week's outbreak will have shattered the records for most tornadoes in a single outbreak (not outbreak sequence), most tornadoes in a single 24-hour period, and most tornadoes in a one-week period. Pretty incredible...
Member Since: November 8, 2009 Posts: 4 Comments: 13744
119. beell
Quoting Skyepony:


I keep seeing the same story.. they were suppose to have discussed it with the public this morning. Don't know what came of that.


Saw one piece earlier that stated it would take about 20 hrs to pump explosives in the pipe(s) under the levee opposite Cairo. Started at 3:30PM CDT yesterday. With a meeting/decision to be made approx. 3 hrs after completion. If they are on the timeline and the source is correct, we should be hearing something soon.

we should be hearing something soon.
I'll pass on the too-easy joke...
Member Since: September 11, 2007 Posts: 145 Comments: 16919
118. Skyepony (Mod)
There is all sort of flood records being broke, even well off the MS River. Up in ND..got a friend thought she'd never see it get anything like '09 again. They came pretty close yesterday. North of them is setting records.
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****************************UNITED STATES NAVY SEAL TEAM SIX*****************************
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116. Skyepony (Mod)
NOTE: Gauge reading is unreliable because gauge is under water.

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Quoting hydrus:
God Bless America...I hope they tied one these around his neck before whippin his arse in the drink...


"At least 919,967 people have
been killed in Afghanistan and Iraq
since the U.S. and coalition attacks, based on lowest credible estimates."

Really blessed!
Member Since: Posts: Comments:

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Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.

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