Tornado kills ten in Mississippi

By: Dr. Jeff Masters , 1:22 PM GMT on April 25, 2010

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A powerful 1/2 to 1-mile wide tornado cut a path of enormous destruction across the state of Mississippi yesterday, killing at least ten and injuring dozens. It was the deadliest tornado in the U.S. since May 10, 2008, when an EF-4 tornado killed 22 people in Oklahoma and Missouri. The damage I've seen so far from photos of yesterday's tornado appears to be mainly of the EF-3 variety, though we will have to wait for the official damage surveys to be sure. The supercell thunderstorm that spawned the tornado or family of tornadoes maintained a continuous circulation from the time the tornado first touched down in Louisiana near the Mississippi border until the tornado reached the Alabama border. This is an extremely rare occurrence. If the 188-mile path of destruction across Mississippi was from a single tornado, it would rank as one of the longest tracks by a single tornado on record. The record of 219 miles is held by the deadliest tornado of all time, the great Tri-State Tornado of 1925 (though there is some dispute over whether this was one tornado or a family of tornadoes.) Our severe weather expert Dr. Rob Carver has a more complete analysis and imagery of yesterday's tornadoes.


Figure 1. Doppler radar storm-relative velocity of the mile-wide tornado that affected Yazoo City, Mississippi On April 24, 2010. This is an unusually wide and strong circulation for a supercell thunderstorm.

More severe weather expected today along the East Coast
The Storm Prediction Center (SPC) outlined a "Slight Risk" region of concern for severe weather today along the East Coast, from Maryland to Northern Florida. Yesterday, SPC had Mississippi underneath the first "High Risk" area of severe weather concern for the year. As usual, you can follow today's severe weather outbreak with our interactive tornado page and our severe weather page..


Figure 2. Severe weather reports for Saturday. Note the long line of red tornado reports extending across the state of Mississippi. These reports originated from a single supercell thunderstorm that spawned one or more tornadoes that carved out a 188-mile lone path of destruction across the state. Image credit: Storm Prediction Center.

Jeff Masters

Storm Lines (thomasanthony)
A quick line of storm clouds came over Lawrence around 7pm. I forgot to change my ISO back after shooting eagles earlier in low light thus a noisy shot.
Storm Lines
Tornado damage in Choctaw County (richardlove310)
Tornado damage in Choctaw County
Tornado damage in Choctaw County (richardlove310)
Tornado damage in Choctaw County

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GFS 18z showing a large amount of tropical waves emerging off of Africa. The most impressive is at 192 hours.

Member Since: September 2, 2009 Posts: 130 Comments: 21194
90W
MTSAT-Floater RAINBOW

Member Since: July 3, 2005 Posts: 428 Comments: 129796
932. beell
A wave looks like this-on the far right of the pic. A strong one but you get the general idea.
On the 700mb analysis charts. Sometimes they are alot broader. But if it stays consistent in the model and the cloud/ir/wv follows the shape-over land or water, you can be pretty sure it is a wave.

A southeast surface wind east of the axis and a northeast surface wind on the west side is also an indication. This windshift can sometime be recorded in the surface obs over the Cape Verde's/Eastern Africa in addition to the sat loops.

Photobucket
Member Since: September 11, 2007 Posts: 145 Comments: 16920
Quoting DestinJeff:
I would like to say that I hope Levi32 doesn't disappear once the season gets going. Seem to remember he did last year.

His analysis is always very measured and thorough, and very much appreciated I think by many here.

Last year was kind of a dud, so I'm not surprised... and this is the 1st year I have been here, so I can't wait for Levi's expert analysis! :O)
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Quoting AstroHurricane001:

Cuba getting hammered with thunderstorms. Haiti next?
There will probably be a low forming in the Caribbean on the tail end of that front. could cause flooding concerns for someone.
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Quoting RitaEvac:
Need weather456 this season
What happened to him???
Member Since: September 2, 2009 Posts: 130 Comments: 21194
2010 www.canefever.com Tropical LINKS Dujour'
Member Since: July 3, 2005 Posts: 428 Comments: 129796
Alright guys see you later!
Member Since: April 8, 2010 Posts: 15 Comments: 2572
Quoting wunderkidcayman:
Hey tornadodude and futuremet nice to see ya


howdy!
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Quoting SomeRandomTexan:
I haven't seen Weather456 at all yet this season... where has he been?


well he kinda retired from the blog

Quoting alexhurricane1991:
Hey wunderkidcayman! how is it going


I am just sitting here waiting for the rain
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Quoting tornadodude:


doing pretty well, thanks!


hope you're enjoying the day off
Every minute of it! but all good things must come to an end right.
Member Since: April 8, 2010 Posts: 15 Comments: 2572
Hey wunderkidcayman! how is it going
Member Since: April 8, 2010 Posts: 15 Comments: 2572
Quoting alexhurricane1991:
IM doing great had the day off so im posting how about you?


doing pretty well, thanks!


hope you're enjoying the day off
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Hey tornadodude and futuremet nice to see ya
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Cuba getting hammered with thunderstorms. Haiti next?
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Quoting tornadodude:


how you doing?

and good to see you futuremet!
IM doing great had the day off so im posting how about you?
Member Since: April 8, 2010 Posts: 15 Comments: 2572
I haven't seen Weather456 at all yet this season... where has he been?
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Quoting altesticstorm10:

The gulf will be in the yellow on the anomaly maps by June 1st for sure. Tbere's been many a season where the Gulf has been below normal in April and very early May and then the big high builds in in May and warms the SSTs right up to slightly above normal by the middle of the month, this is also the case this year as the high is expected to build into the gulf (as predicted by the models) causing the SSTs to warm dramatically


Coastal counties of Texas already starting drought conditions, ridges building in is not what I want to hear, summer heat is getting ready to bang down the door and if we dont get good rains now and next month, we are going to be looking just like last year all over again
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Quoting futuremet:


I'm still here. I have just been too busy to post. :)


I am glad to see your still around.
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Hey guys I am having this feeling about this SW Carib/E Pac system I always got this feeling when a system is some how going to be near us I had it when Ida was passing by I had it when Paloma Gustav and fay was coming I had it when dean was nearing and wilma Ivan Michelle and a few others
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912. xcool
futuremet! wow long time
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910. xcool
good .justing tired.
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Quoting alexhurricane1991:
Hey tornadodude!


how you doing?

and good to see you futuremet!
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Quoting CycloneOz:


See where being a rookie will get you?

Blobs coming off the west coast of Africa are not "tropical waves?"

What is the correct term for them then? :)


Lol Oz. It looks like just daytime convection to me. Notice how it flares up at 18z every day on the loop and then dies. Thunderstorms form every day during the summer in the Sahel region of Africa. They do not always indicate the presence of a tropical wave. That is one reason why analyzing tropical waves while still over Africa is very difficult, and is why I wish 456 was still here. It's hard to do, and he was very good at it.
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Nice to meet you futuremet!
Member Since: April 8, 2010 Posts: 15 Comments: 2572
Quoting BenBIogger:
What ever happen to FutureMet?


I'm still here. I have just been too busy to post. :)
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Hey tornadodude!
Member Since: April 8, 2010 Posts: 15 Comments: 2572
Quoting RitaEvac:
Need weather456 this season


I wish he was here for tropical wave analysis as we watch for the first one to come off Africa. That was his biggest strength of understanding.
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Quoting all4hurricanes:
The Gulf Coast technically hasn't seen a major hurricane in 5 years besides the pattern of the decade is gulf hurricanes, I don't think they'll be spared this season

technicalities dont mean much when Ike brings cat 5 surge with cat 2 wind ... juss' sayin..
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Quoting xcool:
hey matt and oz


hey, how you doing?
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901. xcool
hey matt and oz
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Need weather456 this season
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What ever happen to FutureMet?
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Lol I met a girl that goes to school with JFV at a party saturday night
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so, this year looks like the year a category 5 hits Indiana from Lake Michigan haha
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Quoting NRAamy:
879. RitaEvac 2:36 PM PDT on April 26, 2010
JFV is trying to buld an ARK at the moment for Florida


he's using his outhouse as lumber....


and shower curtain as a sail
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Quoting CycloneOz:
There are a couple of intense waves about to exit Africa.

4/26/2010 - African Waves

Looking at the other weather coming off of Africa, I'm unwilling to declare that these waves will survive the exit.


They're not actually tropical waves though. Kind of looks like daytime convection to me. There are no significant disturbances at the 650mb level.

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879. RitaEvac 2:36 PM PDT on April 26, 2010
JFV is trying to buld an ARK at the moment for Florida


he's using his outhouse as lumber....
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Last summer's Gulf temps were the warmest I've ever witness, that was a dangerous situation for Gulf coast. Had high pressure and very little cloud cover over Gulf which cooked the Gulf, if that pattern would of buckled and sheared lightened it would of been bad
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Quoting FloorManBroward:
When south Florida breaks off will it drift into the Atlantic and become part of the Bahamas or fall on Cuba or become an island in the gulf
Then we could put engines on it and go skiing.
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The Gulf Coast technically hasn't seen a major hurricane in 5 years besides the pattern of the decade is gulf hurricanes, I don't think they'll be spared this season
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If high pressure builds in and puts lid on atmoshphere with little cloud cover over Gulf like last year, then the Gulf will cook and cook fast,
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When south Florida breaks off will it drift into the Atlantic and become part of the Bahamas or fall on Cuba or become an island in the gulf
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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