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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385. JRRP
Quoting Tropicsweatherpr:
For any of the experts here. Which ENSO is more dangerous in terms of having a more active season and more U.S. landfalls Neutral, La Nina or both? I understand that 2005 was in Neutral ENSO right?

neutral with cool bias
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SPC up to 5 Tornado reports, looks like only 2 separate tornadoes, alot better than the approx 30 tornadoes from yesterday!!

Latest 2 reports

0005 4 SW PILOT WAKE NC 3583 7832 TREES DOWN NEAR INTERSECTION HIGHWAYS 96 AND 64. (RAH)
0015 5 SE BUNN NASH NC 3591 7819 STORAGE SHED BLOWN OVER. (RAH)
Member Since: August 25, 2009 Posts: 20 Comments: 6785
Quoting hydrus:
I believe neutral is the worst for the U.S. and La Nina is worse for areas south of 24 degrees north. But this is can get extremely complicated when certain situations materialize.

Why is that?
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Quoting pottery:

Also true. But bear in mind that storms and hurricanes that pass north of here affect us too (feederbands from Ivan caused havock) and torrential rains are a real problem.
We are closer to 12n than 9n. But yeah, I take your point.

What often tends to happen, with systems that pass a few hundred miles north, is that they tend to draw the moisture north with them, leaving us gasping in the heat and longing for rain!

The "joys" of living here in N Central TX is the Severe Spring and occasional Severe Fall storms, an average temp of 66F a year, pleasant, but we pay for that!

Temps as low at 10-20F in winter, normally very short lived, summer temps near 100F, the joy of a "Continental" climate. We get a taste of winter from time to time, an oven is summer.

The beauty of living in the Tropics for you is the "dry" and "wet" seasons. No temps under 65F, highs between 90-100F most of the year. This year, you've had a very dry "dry" season and most likely you will have a very wet "wet" season!
Member Since: August 25, 2009 Posts: 20 Comments: 6785
Quoting pottery:

Also true. But bear in mind that storms and hurricanes that pass north of here affect us too (feederbands from Ivan caused havock) and torrential rains are a real problem.
We are closer to 12n than 9n. But yeah, I take your point.

What often tends to happen, with systems that pass a few hundred miles north, is that they tend to draw the moisture north with them, leaving us gasping in the heat and longing for rain!
And sometimes leave a big fat dome of high pressure over ya. Like having a big magnifying glass over your head.lol
Member Since: September 27, 2007 Posts: 1 Comments: 22728
The preliminary rating for the MS killer tornado is EF-3 with windspeeds of 160 mph. But unless there was something wrong with the construction of this house (granted, always a possibility), it should be upgraded. They should definitely investigate that house to see just how it was constructed before making a final rating. Look at photos 34 and 36 in this gallery (it seems to require IE to run through the images).

Destruction in MS
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Quoting Tropicsweatherpr:
For any of the experts here. Which ENSO is more dangerous in terms of having a more active season and more U.S. landfalls Neutral, La Nina or both? I understand that 2005 was in Neutral ENSO right?

La Ninas usually lessen the shear in the Atlantic, and the cool temperatures in the Pacific usually make the Hurricane Season there, less prominent.
Because we have this unusual warm anomaly in the Tropical Atlantic right now, we will more than likely have an active Atlantic hurricane season.
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Quoting Tropicsweatherpr:
For any of the experts here. Which ENSO is more dangerous in terms of having a more active season and more U.S. landfalls Neutral, La Nina or both? I understand that 2005 was in Neutral ENSO right?
I believe neutral is the worst for the U.S. and La Nina is worse for areas south of 24 degrees north. But this is can get extremely complicated when certain situations materialize.
Member Since: September 27, 2007 Posts: 1 Comments: 22728
Quoting beell:


Maybe a chance Bordo. After this system passes by (and it looks pretty strong) it may leave a boundary/stalled cold front across northern OK tied to a surface low in the panhandle areas stretching up towards the Great Lakes to the low from the previous system-with a dryline S across TX. I know you know the triple point setup well! The southerly LLJ gets cranking pretty good also. Only negative may be a lag or stall of the mid level trough over the SW. Central TX could see some "activity" on Saturday.

Pretty far out but forecast soundings show 2,000-2,500 J/kg of CAPE-so instability should be in place.

Thanks, the "cap" has been pretty strong so far this spring over the DFW area. The computer models are so far in disagreement over the TU and FR/SA event. Will stay tuned.
Member Since: August 25, 2009 Posts: 20 Comments: 6785
Quoting Bordonaro:

As far as direct hurricane strikes at 9N latitude, they usually do not hug that close to S America, although you may have a very, very wet rainy season this year, which is a good thing :o)!!

Also true. But bear in mind that storms and hurricanes that pass north of here affect us too (feederbands from Ivan caused havock) and torrential rains are a real problem.
We are closer to 12n than 9n. But yeah, I take your point.

What often tends to happen, with systems that pass a few hundred miles north, is that they tend to draw the moisture north with them, leaving us gasping in the heat and longing for rain!
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For any of the experts here. Which ENSO is more dangerous in terms of having a more active season and more U.S. landfalls Neutral, La Nina or both? I understand that 2005 was in Neutral ENSO right?
Member Since: Posts: Comments:
Quoting MiamiHurricanes09:
I don't know, I think there will be a minimal La Niña.

The models have been trending towards more of a stronger La Nina. For example, a month ago the CFS saw a weak La Nina, but now it shows a moderate La Nina.
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Quoting TampaSpin:


That is being very Conservative for sure. Looks to me like La Nina by August.

I most definately agree. Buzz Bernard is being way too conservative, because he just doesn't want the Global Temp to go kablooie!
To view his blog post click Here for his irrational proposition!
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371. beell
Quoting Bordonaro:

At the moment, the activity will be north of the FL-TX corridor, into the Midwest and the MS/TN Valley.


Maybe a chance Bordo. After this system passes by (and it looks pretty strong) it may leave a boundary/stalled cold front across northern OK tied to a surface low in the panhandle areas stretching up towards the Great Lakes to the low from the previous system-with a dryline S across TX. I know you know the triple point setup well! The southerly LLJ gets cranking pretty good also. Only negative may be a lag or stall of the mid level trough over the SW. Central TX could see some "activity" on Saturday.

Pretty far out but forecast soundings show 2,000-2,500 J/kg of CAPE-so instability should be in place.
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Alright guys im calling it a night see you guys tomorrow im off work and i have nothing to do with the navy so i will be on here.
Member Since: April 8, 2010 Posts: 15 Comments: 2572
Quoting CaribBoy:


Not good...
I don't know, I think there will be a minimal La Niña.
Member Since: September 2, 2009 Posts: 130 Comments: 21194
Quoting alexhurricane1991:
Hey pottery! cool weekend except the part with the people saying that you will get bad storms i hope thats not the case but i think you will be fine.

Yeah, a great weekend, and very beautiful seeing hundreds of different types of grand forest trees putting on a decorative show. The mountainsides were a riot of colour.
The 'old heads' said that when the trees are stressed (hard dry season) or that when they 'know' that many of them will be blown down or damaged, they produce many more flowers (seeds come after flowers) than usual. In self defense, to produce more trees.
It was quite remarkable.
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Quoting Snowlover123:


We just had a pretty bad storm here- wind was gusting up to 35 mph, we had torrential rain, and it was thunderin' like heck! Judging on the radar, it looks like more cells are heading our way...

Member Since: August 25, 2009 Posts: 20 Comments: 6785
Quoting hurricane23:
ENSO-wise the overall atl basin should be back to neutral this summer, but not quite to La Niña.


Not good...
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Quoting Drakoen:


From a conservative perspective yes

And from an alarmist perspective, the La Nina could be nearly off the charts.
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Quoting hydrus:
Heck they need rain down there anyway. A couple of weeks of moderate rain would quench the thirst of all the critters.

As far as direct hurricane strikes at 9N latitude, they usually do not hug that close to S America, although you may have a very, very wet rainy season this year, which is a good thing :o)!!
Member Since: August 25, 2009 Posts: 20 Comments: 6785
Quoting VAbeachhurricanes:


oh the fun wed be having on here if this was over water...
Name it, noo, name it, noo... lol


We just had a pretty bad storm here- wind was gusting up to 35 mph, we had torrential rain, and it was thunderin' like heck! Judging on the radar, it looks like more cells are heading our way...
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Quoting hurricane23:
ENSO-wise the overall atl basin should be back to neutral this summer, but not quite to La Niña.


That is being very Conservative for sure. Looks to me like La Nina by August.
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Quoting alexhurricane1991:
Hey pottery! cool weekend except the part with the people saying that you will get bad storms i hope thats not the case but i think you will be fine.

Thanks Alex!
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Quoting hurricane23:
ENSO-wise the overall atl basin should be back to neutral this summer, but not quite to La Niña.


From a conservative perspective yes
Member Since: October 28, 2006 Posts: 57 Comments: 30841
Quoting hydrus:
Heck they need rain down there anyway. A couple of weeks of moderate rain would quench the thirst of all the critters.

Very true.
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Quoting StormW:
ECMWF for APRIL.











StormW if this pans our which i have no reason not to believe, come August.....LOOK OUT!
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Hey pottery! cool weekend except the part with the people saying that you will get bad storms i hope thats not the case but i think you will be fine.
Member Since: April 8, 2010 Posts: 15 Comments: 2572
ENSO-wise the overall atl basin should be back to neutral this summer, but not quite to La Niña.
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Quoting Bordonaro:

Hey Pottery, you'll make it through rainy season just fine.
Heck they need rain down there anyway. A couple of weeks of moderate rain would quench the thirst of all the critters.
Member Since: September 27, 2007 Posts: 1 Comments: 22728


Wierd how the high def radar shows little rain accum. something is not working correct.
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Man drakoen it just keeps on getting worse with each time the models update its getting real hair raising
Member Since: April 8, 2010 Posts: 15 Comments: 2572
Quoting Bordonaro:

Hey Pottery, you'll make it through rainy season just fine.

Thanks. I think we will too, actually. Although this one looks to be setting up 'differently'. Will be fun to see what that means at the end of the day..
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Quoting Drakoen:
If the parameters setup we should have a lot of long-track type storms forming.


I can agree with this.
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Quoting Chicklit:
My son has to drive back to Texas from Florida Thursday through Saturday. Are we in for a repeat of the last few days?

At the moment, the activity will be north of the FL-TX corridor, into the Midwest and the MS/TN Valley.
Member Since: August 25, 2009 Posts: 20 Comments: 6785
Quoting pottery:


I am trying to stay in a calm state here Hydrus. Do I really want to look at them?
LOL
It does show some heavy rain for your region. If does not all fall in a couple of hours, you probably will not need your boat.:)
Member Since: September 27, 2007 Posts: 1 Comments: 22728
Raining lightly here in odessa
Member Since: April 8, 2010 Posts: 15 Comments: 2572
Quoting pottery:


I am trying to stay in a calm state here Hydrus. Do I really want to look at them?
LOL

Hey Pottery, you'll make it through rainy season just fine.
Member Since: August 25, 2009 Posts: 20 Comments: 6785
Quoting Drakoen:
The CFS, ECMWF, and Glosea forecast for a weak La Nina as we head into the heart of the season.
If that pans out Drak, I do fear the worst. This is my honest opinion.
Member Since: September 27, 2007 Posts: 1 Comments: 22728
Quoting Drakoen:
The CFS, ECMWF, and Glosea forecast for a weak La Nina as we head into the heart of the season.
Oh great...
Member Since: September 2, 2009 Posts: 130 Comments: 21194
CNN Meteorologist stated MS Tornado was on the ground for 150 miles, simply amazing.
Link
Member Since: August 25, 2009 Posts: 20 Comments: 6785
Quoting hydrus:
lol. And check out the NCEP/GFS model.


I am trying to stay in a calm state here Hydrus. Do I really want to look at them?
LOL
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You know the clouds and high and think when the 3g smart phone has no reception....geesh. It is absolutely pouring still.
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Quoting pottery:
Spent the weekend in the forest of the Northern Range of mountains here in Trinidad.. Spoke to some of the 'old heads' there. Asked them why there were more flowers on the forest trees than I have ever seen before. (Incredible!!)
They said that when the trees flower like that, we can expect many bad storms in the coming rainy season.
They have no computers and weather forecasts up there where they are, and are unaware of models, SST, el Nino etc.
Just saying.....
lol. And check out the NCEP/GFS model.
Member Since: September 27, 2007 Posts: 1 Comments: 22728
The CFS, ECMWF, and Glosea forecast for a weak La Nina as we head into the heart of the season.
Member Since: October 28, 2006 Posts: 57 Comments: 30841
evening all
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Spent the weekend in the forest of the Northern Range of mountains here in Trinidad.. Spoke to some of the 'old heads' there. Asked them why there were more flowers on the forest trees than I have ever seen before. (Incredible!!)
They said that when the trees flower like that, we can expect many bad storms in the coming rainy season.
They have no computers and weather forecasts up there where they are, and are unaware of models, SST, el Nino etc.
Just saying.....
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Quoting StormW:
ECMWF for APRIL.









So they're going down?
Member Since: September 2, 2009 Posts: 130 Comments: 21194
Well, SPC has 3 Tornado Reports for today :o(!!

2340 1 E OATS DARLINGTON SC 3425 8006 NUMEROUS DOWNED TREES. MOBILE HOMES DAMAGED. OBSERVED DEBRIS ALONG EAST SEVEN PINES STREET. (ILM)
2350 6 E OATS DARLINGTON SC 3425 7997 POSSIBLE INJURIES ON EAST SEVEN PINES STREET HALFWAY BETWEEN OATS AT HWY 401. (ILM)
2350 DARLINGTON DARLINGTON SC 3430 7987 SEVERAL HOMES DAMAGED. A REPORT OF ROOF DAMAGE TO A SCHOOL. A BANK WAS DAMAGED. (ILM)
Member Since: August 25, 2009 Posts: 20 Comments: 6785
Basically, 2004 style tracks combined with 2005 style systems. Not bode well for the US this year, I pray this doesn't fold out. I still feel however that the most likely threat to the US is from the Caribbean. That TCHP in the Caribbean is already higher than 2009 was in July!
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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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