Unanswered questions concerning Hurricane Isaac

By: Dr. Jeff Masters , 4:35 PM GMT on August 31, 2012

Share this Blog
54
+

The top winds of Tropical Depression Isaac have fallen to 25 mph, but the storm continues to be a potent rain-maker as it heads north-northwest at 11 mph into Missouri. Isaac has spawned up to 20 suspected tornadoes, brought storm surges as high as 13.6' to the coast (in Lake Borgne, LA), and dumped 20" of rain at one station in New Orleans. The 13.27" of rain that fell at Hattiesburg, MS broke the record for wettest August in the city's history (previous record: 13.03" in 1987.) Major flooding is occurring on seven rivers in Louisiana and Mississippi. Isaac is being blamed for at least four deaths in the U.S., 24 in Haiti, and five in the Dominican Republic.

A few notable rainfall totals from Isaac, through 11 am EDT on Friday:

20.08" New Orleans, LA
15.02" Marion, MS
13.99" Pascagoula, MS
13.27" Hattiesburg, MS
10.85" Gulfport, MS
10.39" Slidell, LA
10.17" Biloxi, MS
9.85" Mobile, AL
7.38" Pine Bluff, AR
5.95" Baton Rouge, LA

A major reason for Isaac's heavy rainfall totals has been its very slow motion. This slow speed was due to the fact Isaac has been bumping into a ridge of high pressure that is unusually strong, due to the intense drought over the center of the U.S.; strong drought-amplified high pressure areas are very resistant to allowing any low pressure areas to intrude into their domain. The high pressure area was strong enough this week to allow several all-time records for heat this late in the year to be set:

112° on August 29 at Winner, SD
108° on August 29 at Valentine, NE
107° on August 29 at Corpus Christi, TX
97° on August 29 at Denver, CO (2nd highest so late in the year)


Figure 1. Nighttime view of Hurricane Isaac taken at 1:57 am CDT August 29, 2012, by the Visible Infrared Imaging Radiometer Suite (VIIRS) on the Suomi-NPP satellite. The VIIRS day-night band detects light in a range of wavelengths from green to near-infrared, and uses light intensification to enable the detection of dim signals. In this case, the clouds of Isaac were lit by moonlight. Image credit: NASA.

Isaac's beneficial rains falling in drought-stricken regions
Hurricanes get a lot of attention because of the billions in damage they cost, and the lives they disrupt. AIR Worldwide estimated today that insured damage from Isaac would cost up to $2 billion. This does not include damage to infrastructure or uninsured damage, so the final price tag of Isaac's rampage will be more like $3 - $5 billion. However, Isaac is now dumping beneficial rains over Arkansas, Missouri, Illinois, Indiana, Ohio, and Kentucky--regions stricken by the worst drought since the 1950s or 1930s, depending upon the exact location. These regions need 9 - 18 inches of rain to pull them out of drought. Isaac's 3 - 6 inches of rain will not end the drought, but will put a pretty good dent in it. I expect that 3 - 6 inches of rain for a wide swath of prime agricultural land in extreme drought is probably worth at least $5 billion, when you consider that a recent estimate by a Purdue economist put the cost of the great drought of 2012 at more than $77 billion. Only Hurricane Katrina ($146 billion) and the drought of 1988 ($78 billion) have been more expensive disasters, according to NOAA's National Climatic Data Center. Unfortunately, Isaac's arrival is poorly timed, as the storm is arriving during harvest season. The strong winds associated with the storm will flatten many crops, making it more difficult to harvest them, and Isaac's winds may cost farmers several hundred million dollars due to unharvestable crops. Still, the rains from Isaac will be highly beneficial for the success of the upcoming winter wheat season, and for next year's growing season.


Figure 2. Predicted precipitation for the five-day period ending on Tuesday evening shows that Isaac is expected to bring a large region of 3 - 6 inches of rain (red, orange, and brown colors) to Arkansas, Missouri, Illinois, Indiana, Ohio, and Kentucky. Image credit: NOAA/HPC.


Figure 3. The great drought of 2012 has brought so little rain to the Midwest that some areas require over 15" of rain (dark purple colors) to end the drought. Image credit: NOAA/CPC.

Unanswered questions about Hurricane Isaac

1. Did the passage of Hurricane Isaac stir up oil from the Deepwater Horizon oil spill? Isaac was the first hurricane to pass over the site of the 2010 Deepwater Horizon oil spill. We know that large hurricanes are capable of creating currents in deep water at the bottom of the Gulf of Mexico; Hurricane Ivan caused upwelling currents of 0.5 cm/s at a depth of about 500 meters. In an August 28 article in the Huffington Post, Nick Shay, professor of meteorology and physical oceanography at the University of Miami, said: "Winds will push water away from the center of a storm, which causes an upwelling as the ocean tries to adjust. It brings whatever is near the bottom up higher in the water column and currents can then push it towards the coast." Up to 1 million barrels of oil from the spill are estimated to still be present in the deep water sediment, on beaches, and in the marshes of Louisiana, and it is possible some of this oil will wash up on the Gulf Coast in coming months. The storm surge of Isaac also likely flushed out oil lodged in the coastal marshes of Louisiana, but it is unknown how much of a concern this might be.

2. What's the deal with these super-sized Category 1 and 2 hurricanes that have been hitting the U.S.? The past three landfalling hurricanes in the U.S.--Isaac (2012), Irene (2011), and Ike (2008)--have all been exceptionally large, among the top ten on record for horizontal extent of tropical storm-force winds. Each of these storms had an unusually low pressure characteristic of a storm one full Saffir-Simpson category stronger. Is this the new normal for U.S. hurricanes?

3. Did the new $14.5 billion upgrade to the New Orleans levee system cause worse flooding elsewhere? Whenever a new levee or flood control structure is created, you make someone else's flood problem worse, since the water has to go somewhere. Where did the water was stopped by the new $1.1 billion, 1.8 mile-long Lake Borgne flood barrier on the east side of New Orleans go? Did it flow south and contribute to the overtopping of the levees near Braithwaite? Or did it go north and contribute to the 36 hours of storm surge in excess of 5' observed along the Mississippi coast at Waveland? I posed this question to NHC's storm surge expert Jaime Rhome, and he said it was impossible to know without doing detailed storm surge modeling studies.

4. Can only hurricanes beginning with the letter "I" hit the U.S. now? Isaac (2012), Irene (2011), and Ike (2008) are the last three hurricanes to hit the U.S. It turns out that hurricanes that begin with the letter "I" and "C" have more names on the list of retired hurricanes than any other letter (nine each.) I'm thinking Isaac will get its name retired, letting storms beginning with "I" take over sole possession of first place on the retired storms list.

Hurricane Kirk in the Central Atlantic
Hurricane Kirk intensified into a 105 mph Category 2 hurricane this morning, becoming the 2nd strongest hurricane of the 2012 Atlantic hurricane season. Hurricane Gordon was the only stronger storm; Gordon hit sustained winds of 110 mph just before reaching the Azores Islands on August 18. Kirk has probably peaked in intensity, and is about to move over colder waters and gradually decay. Kirk is not a threat to any land areas.


Figure 4. Morning satellite image of Tropical Storm Leslie.

Tropical Storm Leslie a long-range threat to Bermuda, Canada, and the U.S. East Coast
Tropical Storm Leslie formed on Thursday in the Central Atlantic. Leslie's formation date of August 30 puts 2012 in 2nd place for earliest formation date of the season's 12th tropical storm. Only 1995 had an earlier formation date of the season's 12th storm. With records dating back to 1851, this year is only the second time 8 total storms have formed in August. The other year was 2004, when the first storm of the season formed on August 1 (Alex), and the 8th storm (Hermine) formed on August 29th. Satellite loops show that Leslie has a modest amount of heavy thunderstorm activity, and respectable low-level spiral bands and upper-level outflow. Conditions appear ripe to allow Leslie to intensify into a Category 2 hurricane by Sunday. Fortunately, Hurricane Kirk is weakening the ridge of high pressure to the north of Leslie, and Leslie is expected to turn to the northwest and miss the Lesser Antilles Islands. However, steering currents for Leslie are expected to collapse early next week, as Leslie gets stuck between two upper level lows. The storm will then slowly meander over the open ocean for many days, potentially threatening Bermuda. Leslie will stay stuck until a strong trough of low pressure approaches the U.S. East Coast around September 8. This trough should be strong enough to pull Leslie to the north and then northeast by September 9. At that time, Leslie may be close enough to the coast that the storm will make landfall in New England, Canada, or the Mid-Atlantic states. Leslie could also miss land entirely; this all depends upon the timing and strength of the September 8 trough of low pressure. Regardless, Leslie is expected to bring an extended period of high waves to the U.S. coast. According to NOAA's Wavewatch III model, large swells from Leslie will reach Bermuda by Monday, and arrive along the U.S. East Coast on Tuesday. These waves will be capable of creating dangerous rip currents and beach erosion.

Portlight disaster relief charity responds to Isaac
The Portlight.org disaster relief charity, founded and staffed by members of the wunderground community, are in Mississippi, helping out with Isaac relief efforts. You can check out their progress or donate to Portlight's disaster relief fund at the portlight.org website.

I'm planning on taking Saturday off, but will have a new post for you on Sunday. Have a great holiday weekend, everyone!

Jeff Masters

Hurricane Isaac Louisiana (apphotos)
People play in the storm surge from Hurricane Isaac, on Lakeshore Drive along Lake Pontchartrain, as the storm nears land, in New Orleans, Tuesday, Aug. 28, 2012. (AP Photo/Gerald Herbert)
Hurricane Isaac Louisiana
Portlight volunteers at Biloxi shelter (Portlight)
Portlight volunteers at Biloxi shelter
Hurricane Isaac Louisiana (apphotos)
Research students from the the University of Alabama measure wind speeds as Hurricane Isaac makes landfall, Wednesday, Aug. 29, 2012, in New Orleans, La. Isaac was packing 80 mph winds, making it a Category 1 hurricane. It came ashore early Tuesday near the mouth of the Mississippi River, driving a wall of water nearly 11 feet high inland and soaking a neck of land that stretches into the Gulf. The storm stalled for several hours before resuming a slow trek inland, and forecasters said that was
Hurricane Isaac Louisiana
TS Isaac (Raine911)
Between the rain bands
TS Isaac

Reader Comments

Comments will take a few seconds to appear.

Post Your Comments

Please sign in to post comments.

or Join

Not only will you be able to leave comments on this blog, but you'll also have the ability to upload and share your photos in our Wunder Photos section.

Display: 0, 50, 100, 200 Sort: Newest First - Order Posted

Viewing: 522 - 472

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42Blog Index

Quoting BDADUDE:
Looks like Leslie is going to stay South of us thank goodness.


One thing I've learned is don't holler before you get out of the woods :), I met a lot of guys from Bermuda who helped us here in Grand Cayman after Ivan to get our electricity back, all nice people!
Member Since: Posts: Comments:
Quoting SherwoodSpirit:
I'm at work, but I just checked my local radar and discovered that a tornado warning had been issued for my neighborhood (O'fallon/St. Peters, MO), and then checked the local storm report and discovered that there's damage a mile or so north of my house. That cell was moving north, so it would have gone directly over my house. I wonder what I'll find when I get home?

Not overly worried, because I know these tornadoes tend to be quick spin-ups of short duration and it doesn't appear that the damage reports are extensive, but I wish I could get out of here sooner than my normal 8:30 quit time. :(

If i were you i would go home.
Member Since: Posts: Comments:
520. 7544
looks like she dived sw on the last frame ??
Member Since: Posts: Comments:
Anyone think this little bugger will be John?
TROPICAL WEATHER OUTLOOK
NWS NATIONAL HURRICANE CENTER MIAMI FL
500 PM PDT FRI AUG 31 2012

FOR THE EASTERN NORTH PACIFIC...EAST OF 140 DEGREES WEST LONGITUDE..

THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON RECENTLY
DOWNGRADED TROPICAL STORM ILEANA...LOCATED ABOUT 395 MILES WEST OF
THE SOUTHERN TIP OF BAJA CALIFORNIA.

AN ELONGATED TROUGH OF LOW PRESSURE IS PRODUCING A LARGE AREA OF
DISORGANIZED SHOWERS AND THUNDERSTORMS EXTENDING SEVERAL HUNDRED
MILES OFFSHORE OF THE COAST OF SOUTHERN MEXICO AND CENTRAL AMERICA.
GRADUAL DEVELOPMENT OF THIS SYSTEM IS POSSIBLE AS IT MOVES
WEST-NORTHWESTWARD AT ABOUT 15 MPH DURING THE NEXT COUPLE OF DAYS.
THIS SYSTEM HAS A MEDIUM CHANCE...30 PERCENT...OF BECOMING A
TROPICAL CYCLONE DURING THE NEXT 48 HOURS.

ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE
NEXT 48 HOURS.

$$
Member Since: Posts: Comments:
Quoting AussieStorm:


Really, wow. was the rubber all cracked from not being used?
OK we'd turned them on to wash the windshield off but it did take me a bit to get them going....and that's the only vehicle I drive...no rain to speak of for 4 months I think....
Member Since: Posts: Comments:
I'm at work, but I just checked my local radar and discovered that a tornado warning had been issued for my neighborhood (O'fallon/St. Peters, MO), and then checked the local storm report and discovered that there's damage a mile or so north of my house. That cell was moving north, so it would have gone directly over my house. I wonder what I'll find when I get home?

Not overly worried, because I know these tornadoes tend to be quick spin-ups of short duration and it doesn't appear that the damage reports are extensive, but I wish I could get out of here sooner than my normal 8:30 quit time. :(
Member Since: Posts: Comments:
Quoting Relix:


Kind of a west jog at the end there, right?

Looks southwest to me. 0.o
Member Since: July 6, 2010 Posts: 113 Comments: 32558
Quoting TropicalAnalystwx13:
What do you see in this image, particularly the deep convection? I see an eagle.

Member Since: Posts: Comments:
514. 7544
Quoting stormpetrol:
Who thinks at least TS watches should go up for the N Antilles?

agree given her size they might
Member Since: Posts: Comments:
Quoting leftlink:


Well with the potential for another Atlantic large-area hurricane to form, I think it is time for a more focused discussion on changing the Saffir Simpson scale. Anyone up for that?

I just created a new blog with a few critiques of the present system (repeating what you all have said). If you get a minute, please visit it and join the discussion. Thanks!

Discussion: Modifying the Saffir-Simpson Scale

Link

I added a few thoughts for ya.
Member Since: Posts: Comments:
Leslie is looking like she is intensifying. If I lived in in the islands, I sure would be on alert - she'll have to make a pretty quick turn or she'll be close enough to do some damage there!
Member Since: August 21, 2011 Posts: 0 Comments: 143


Check out 16N/52.2W, that looks very much like an Eye forming to me.
Member Since: Posts: Comments:
Looks like Leslie is going to stay South of us thank goodness.
Member Since: Posts: Comments:
509. Relix
Quoting barbamz:
img

This one?


Kind of a west jog at the end there, right?
Member Since: Posts: Comments:
Yeah, Presslord Janice did manage to take another little piece of my Heart.
Member Since: August 18, 2008 Posts: 0 Comments: 3113
Well, you can even see the eye-wall developing in Leslie even on the two-tone shortwave, if you zoom in and look.

It will be visible on satellite probably in the next 6 to 12 hours.

Just zoom in and look about where the official center fix is, and it's right there.

Pretty easy center fix on this thing, as it's incredibly symmetrical and well stacked.


Very good anticyclone as well, except one slightly broken piece of it on the north side, but compared to how poor Isaac's anticyclone looked, this is impressive.
Member Since: January 25, 2012 Posts: 33 Comments: 1520
Quoting RTSplayer:
Anyone have the link to the monochrome shortwave/near-infrared floater for Leslie?

I need to see that thing...

Thanks in advance.

I can't seem to get the main floater page to work right because my shortcut only has dead links on it, I really need a shortcut link one branch up in the tree so that doesn't happen again.

Thanks again.


http://www.ssd.noaa.gov/goes/east/tatl/flash-ir2. html
Member Since: August 21, 2011 Posts: 0 Comments: 143
ADT is at 3.9, almost hurricane. A current combination of the TAFB/SAB with the ADT would probably give one a satellite estimate of 60kts.
Member Since: Posts: Comments:
Quoting RTSplayer:
Anyone have the link to the monochrome shortwave/near-infrared floater for Leslie?

I need to see that thing...

Thanks in advance.

I can't seem to get the main floater page to work right because my shortcut only has dead links on it, I really need a shortcut link one branch up in the tree so that doesn't happen again.

Thanks again.
img

This one?

Member Since: Posts: Comments:
Quoting stormpetrol:
Who thinks at least TS watches should go up for the N Antilles?
I do it can be like Luis of 1995.
Member Since: Posts: Comments:
Anyone have the link to the monochrome shortwave/near-infrared floater for Leslie?

I need to see that thing...

Thanks in advance.

I can't seem to get the main floater page to work right because my shortcut only has dead links on it, I really need a shortcut link one branch up in the tree so that doesn't happen again.

Thanks again.
Member Since: January 25, 2012 Posts: 33 Comments: 1520
500. Relix
Quoting TropicalAnalystwx13:

Close is relative.



Point taken! :P!
Member Since: Posts: Comments:
Quoting TropicalAnalystwx13:
What do you see in this image, particularly the deep convection? I see an eagle.



Similar....

Member Since: Posts: Comments:
Leslie could be a Cat.4
Member Since: Posts: Comments:
Quoting JMASTERS:
2. What's the deal with these super-sized Category 1 and 2 hurricanes that have been hitting the U.S.? The past three landfalling hurricanes in the U.S.--Isaac (2012), Irene (2011), and Ike (2008)--have all been exceptionally large, among the top ten on record for horizontal extent of tropical storm-force winds. Each of these storms had an unusually low pressure characteristic of a storm one full Saffir-Simpson category stronger. Is this the new normal for U.S. hurricanes?


Well with the potential for another Atlantic large-area hurricane to form, I think it is time for a more focused discussion on changing the Saffir Simpson scale. Anyone up for that?

I just created a new blog with a few critiques of the present system (repeating what you all have said). If you get a minute, please visit it and join the discussion. Thanks!

Discussion: Modifying the Saffir-Simpson Scale

Link
Member Since: Posts: Comments:
Quoting stormpetrol:
Who thinks at least TS watches should go up for the N Antilles?
They won't do that unless she stays
Quoting dartboardmodel:
I think I see the eye of Leslie! Just kidding lol!! Hmmmm.... where is the center anyway??? Is this storm vertically tilted to the northeast or something?? Is the low level circulation in the midle of the blob and the mid and upper circulation located where the bright red blob are are to the northeast?? This could be a problem for the models to handle, but then again they alredy have enough problems to begin with. It would be a much bigger problem for the Islands.
Well, I'm looking to the center of that blob, it even shows like an indentation of the clouds. Hope and eye doesn't pop out surprising everyone,not likely though,just saying, ... there aren't any HH for this soon to be hurricane?
Member Since: Posts: Comments:
Quoting groundgirl:

I'm waving @ everyone from the bump that's not quite in the center of ex-Issac.....lurking to see if Leslie is really a fish.....We've got like 3 inches of rain here in central MO....nice soft rain most of the time....more to come...we bought a new pickup April 28, I figured out how to use the windshield wipers today August 31.


Really, wow. was the rubber all cracked from not being used?
Member Since: Posts: Comments:
What do you see in this image, particularly the deep convection? I see an eagle.

Member Since: July 6, 2010 Posts: 113 Comments: 32558
Quoting TropicalAnalystwx13:
Why do I have the feeling we're not done with Isaac?


we aren't.. still a tornado threat.
Member Since: Posts: Comments:
Well, Leslie has missed the next forecast point by nearly a full degree of latitude.

It also looks very much like it's about to open a full eye, with the green on Funktop likely wrapping around a decent eye-wall...
Member Since: January 25, 2012 Posts: 33 Comments: 1520
Quoting TropicalAnalystwx13:
Why do I have the feeling we're not done with Isaac?


I'm waving @ everyone from the bump that's not quite in the center of ex-Issac.....lurking to see if Leslie is really a fish.....We've got like 3 inches of rain here in central MO....nice soft rain most of the time....more to come...we bought a new pickup April 28, I figured out how to use the windshield wipers today August 31.
Member Since: Posts: Comments:
Hey all from Germany. Glad the blog and (more important) its contributors survived Isaac. It's really one amazing storm. Hope the drought stricken regions are going to get enough rain.

Water vapor East Conus.

The real big picture, including Isaac, Kirk and Leslie (works for me only in Chrome, not IE any longer)
Member Since: Posts: Comments:
Leslie Looks menacing
Member Since: Posts: Comments:
Quoting Relix:
Yeah its been nudged west, but the weakness is there. Its like a hurricane highway. No way it gets close to the islands

Close is relative.

Member Since: July 6, 2010 Posts: 113 Comments: 32558
Quoting Relix:
Yeah its been nudged west, but the weakness is there. Its like a hurricane highway. No way it gets close to the islands


The weakness is there, but the High to East has strengthen, while the one to the west has weakened if I'm reading right, the High to the East being stronger would push Leslie more westward, just my take, I'm just trying to learn these charts so forgive my ignorance!
Member Since: Posts: Comments:
Quoting AussieStorm:


If it wasn't for the levee's failing in New Orleans, would Katrina of been as costly to life and money?


Probably not in NOLA itself, but St. Bernard and Plaquemines, as wells as everything in Mississippi, Alabama, and the Northshore would have actually gotten hit harder. The water would have just gone someplace else,w hich probably would have added another 3 to 5 feet to everyone elses storm surge totals.

Plust people forget, a lot of deaths happened in Mississippi from Katrina as well.


But let's just say, I though I would have been safe in Katrina in this house even if it had come west, but after seeing what Isaac just did with the water, I do not believe that is the case any more.

Everyone in Ponchatoula and Springfield would probably be dead right now if Isaac was as powerful as Katrina, but took the exact same track it had just took.

By the way, someone at NHC an LSU needs to actually have the courage to run that scenarior in a computer model and broadcast the results so both emergency agencies and all the citizens can learn the truth of the matter.
Member Since: January 25, 2012 Posts: 33 Comments: 1520
No mention yet of low located SSE of CV islands.

TROPICAL WEATHER OUTLOOK
NWS NATIONAL HURRICANE CENTER MIAMI FL
800 PM EDT FRI AUG 31 2012

FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO...

THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON HURRICANE
KIRK...LOCATED ABOUT 1015 MILES SOUTH OF CAPE RACE NEWFOUNDLAND...
AND ON TROPICAL STORM LESLIE...LOCATED ABOUT 715 MILES EAST OF THE
LEEWARD ISLANDS.

THE HYDROMETEOROLOGICAL PREDICTION CENTER IS ISSUING ADVISORIES ON
TROPICAL DEPRESSION ISAAC...LOCATED OVER SOUTHWESTERN MISSOURI.

ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE
NEXT 48 HOURS.

$$
FORECASTER BEVEN
Member Since: Posts: Comments:
meanwhile......

Member Since: Posts: Comments:
483. Relix
Yeah its been nudged west, but the weakness is there. Its like a hurricane highway. No way it gets close to the islands
Member Since: Posts: Comments:
Quoting Gearsts:
It has weaken more.


Damn , I just can't seem to it right, can I, Oh well some of us never learn :)
Member Since: Posts: Comments:
Quoting stormpetrol:


1800hrs.


2100hrs.

Just 3 hours ridge has strengthen if I'm reading right.


To be honest I think it's 2 or 3 isobars too far away from that trough to be pulled that hard, but I under-estimated the first turn in Isaac the whole time too, so we'll see.

00z steering gets published in about an hour anyway, no point using old maps I guess.
Member Since: January 25, 2012 Posts: 33 Comments: 1520
Quoting AussieStorm:


If it wasn't for the levee's failing in New Orleans, would Katrina of been as costly to life and money?

The damage total still would have been very high (probably in the top five costliest hurricanes) but it Ike would be the costliest USA hurricane ever in that case.
Member Since: July 6, 2010 Posts: 113 Comments: 32558
Quoting stormpetrol:


1800hrs.


2100hrs.

Just 3 hours ridge has strengthen if I'm reading right.
It has weaken more.
Member Since: Posts: Comments:
Quoting VR46L:


Don't know haven't seen any of the blog bosses on ...until recently

anyway cute Kirk not so cute now



And neither is this one





Hope I look that good at 95 + nearly 96 years :)
Member Since: Posts: Comments:
Quoting stormpetrol:
Who thinks at least TS watches should go up for the N Antilles?



i do
Member Since: May 21, 2006 Posts: 5091 Comments: 115379
Quoting RTSplayer:
Quoting opal92nwf:
It has been drugery and embarassement for the Weather Channel to cover Isaac as if it's a Katrina as it makes landfall, but now they are covering it as if the damage is like Katrina's, which is absolutely unbelievably ridiculous!!!! Isaac is "child's play" compared to Katrina or a cat 4 or 5 storm. Save the hype for the real storm TWC!!!! Please tell me if you feel the same anyone out there.


====

Isaac hit less populated areas, so it's definitely not going to be as bad as Katrina in monetary losses. Isaac also did not have winds as strong as Katrina. Even Katrina's weak side winds were stronger than Isaac's strong side winds.

But Isaac has doubled and tripled Katrina's rainfall totals. Katrina was relatively dry in terms of rainfall totals, with only about 7.5 inches in this general area.


If it wasn't for the levee's failing in New Orleans, would Katrina of been as costly to life and money?
Member Since: Posts: Comments:
Quoting stormpetrol:
Who thinks at least TS watches should go up for the N Antilles?
Nah
Member Since: Posts: Comments:


1800hrs.


2100hrs.

Just 3 hours ridge has strengthen if I'm reading right.
Member Since: Posts: Comments:
Why do I have the feeling we're not done with Isaac?

Member Since: July 6, 2010 Posts: 113 Comments: 32558
Leslie is well developed with a full anticyclone and amazing funktop presentation.

Probably gets upgraded later tonight.

I don't know if the trough will pull it quite as hard as the official forecast shows, but I guess we'll find out soon enough.
Member Since: January 25, 2012 Posts: 33 Comments: 1520

Viewing: 522 - 472

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42Blog Index

Top of Page

About

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

Local Weather

Overcast
46 °F
Overcast