Dr. Jeff Masters' WunderBlog

High risk of a major tornado outbreak today; 13 dead from Leap Day outbreak
Posted by: Dr. Jeff Masters, 03:14 PM GMT del 02 Marzo 2012 +36
A powerful spring storm system is gathering strength over Missouri this morning, and will track northeastward into Southern Michigan tonight. The atmosphere in the storm's warm sector, south of the the warm front and east of the cold front, is very unstable, thanks to a flow of warm, moist air from the Gulf of Mexico at the surface, and very cold, dry air aloft. A powerful jet stream with winds winds aloft blowing at 150 mph will interact with this unstable air, and the strong change of wind speed and direction with height (wind shear) associated with this jet will impart a strong twisting motion to updrafts that from in this afternoon's thunderstorms along the cold front. These are ideal conditions for tornado formation, and a large tornado outbreak with damaging long-track tornadoes is likely late this afternoon in the Ohio and Tennessee Valleys. NOAA's Storm Prediction Center has placed Central Kentucky, Northern Tennessee, and a small portion of Southern Indiana in their "High Risk" area for severe weather Friday afternoon and evening, and is warning of the possibility of long-track significant tornadoes. While the conditions are not as dangerous as those we saw in 2011 during the May 21 - 25 Joplin, Missouri and late April Southeast U.S. tornado outbreaks, the potential exists for a punishing tornado assault with many more strong and violent tornadoes than occurred during the Leap Day outbreak. A number of severe thunderstorms with damaging winds have already formed this morning along the storm's warm front, in Missouri, Indiana, and Illinois. Consult our Severe Weather Page and Interactive Tornado Page to follow the storms.


Figure 1. NOAA's Storm Prediction Center has placed Central Kentucky, Northern Tennessee, and a small portion of Southern Indiana in their "High Risk" area for severe weather Friday afternoon. This is highest level of alert.


Figure 2. NOAA's Storm Prediction Center is calling for a 30% chance of tornadoes today within 25 miles of each point in the pink shaded area. Within the hatched area, there is a 10% or greater probability of strong EF-2 and EF-3 tornadoes, or violent EF-4 and EF-5 tornadoes within 25 miles of a point.

Leap Day tornado outbreak death toll hits 13
The cleanup continues today from the round of deadly tornadoes that pounded the Midwest on Leap Day, killing thirteen people. The outbreak began on February 28, when nine confirmed tornadoes touched down. A pair of EF-2 tornadoes hit Buffalo, Missouri and Harveyville, Kansas, with each twister causing one death. Also on that day, a weak EF-0 tornado moved over open fields near Gandy, Nebraska--the first February tornado in Nebraska since record keeping began in 1950. The outbreak continued on Leap Day, February 29, with 27 more confirmed tornadoes. Hardest hit was Harrisburg, Illinois, where a violent EF-4 tornado with 180 mph killed six, injured approximately 100, and damaged 200 homes and 25 businesses. The tornado cut a path 26.5 miles long and 275 yards wide across the town, according to the NWS damage survey. The only EF-3 tornado of the outbreak hit Asherville, Missouri that day, killing one person. The other deadly tornadoes of the outbreak included an EF-2 tornado that killed one person in Cassville, MO; an EF-2 that killed two in Monterey, Tennessee, and an EF-1 that killed one person in Smithville, Tennessee. An EF-2 tornado also plowed through downtown Branson, Missouri on Leap Day, injuring 33 people. An NWS storm survey found the tornado was 400 yards wide and carved a path 22 miles long. Overall, damage from the two-day tornado outbreak will run in the hundreds of millions, and could add up to the first billion-dollar weather disaster of 2012 in the U.S. The 36 confirmed tornadoes from the outbreak make it the second largest February tornado outbreak since record keeping began in 1950. The biggest February tornado outbreak occurred on February 5 - 6, 2008, when 92 tornadoes touched down.


Figure 3. Damage at the Branson, Missouri Hilton after the Leap Day tornado. The tornado blew out or cracked windows in 219 of the hotel rooms in the 12-story/295 room Hilton Branson Convention Center, and extensively damaged three of Branson’s 50 plus theatres--Americana Theater, Branson Variety Theater and Dick Clarks’ American Bandstand Theater. Image credit: BransonRecovery Facebook page.

Portlight disaster relief charity responds to the Harrisburg, Illinois tornado
Portlight has a seasoned veteran from last year's tornado recovery efforts in Harrisburg, IL, and is looking for more people to volunteer their time. They are teaming with another disaster recovery charity, Team Rubicon, in the effort. As usual, they will be focusing efforts on the unserved, under served and forgotten. Please visit the Portlight Disaster Relief blog to learn more. Donations are always welcome!


Figure 4. Team Rubicon at work during last year's tornado recovery efforts.

Jeff Masters
HARRISBURG IL (catfish10)
HARRISBURG IL
HARISBURG IL. (catfish10)
Golden circle building
HARISBURG IL.
Categories: Tornado
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1851. TropicalAnalystwx13 04:02 AM GMT del 03 Marzo 2012    
Alabama tornado caused damage.

AT 954 PM CST...EMERGENCY MANAGEMENT REPORTED A POSSIBLE TORNADO

WITH SIGNIFICANT DAMAGE.
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1852. StormTracker2K 04:03 AM GMT del 03 Marzo 2012    
Death Toll at 28 today.
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1854. hurricanehunter27 04:03 AM GMT del 03 Marzo 2012    
Quoting TropicalAnalystwx13:
Alabama tornado caused damage.

AT 954 PM CST...EMERGENCY MANAGEMENT REPORTED A POSSIBLE TORNADO

WITH SIGNIFICANT DAMAGE.
But what do they mean by that? Could be just a ton of downed trees.
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1855. Bluestorm5 04:04 AM GMT del 03 Marzo 2012    
Quoting Ameister12:
Bellingsley may have taken a direct hit by a major tornado, but there are no reports yet.


Significant damage reported with tornado that has just struck near Billingsley, AL
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1856. redux 04:04 AM GMT del 03 Marzo 2012    
Quoting hurricanehunter27:
But what do they mean by that? Could be just a ton of downed trees.


it looked like it was going to fat girls cafe per Spann
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1857. xcool 04:04 AM GMT del 03 Marzo 2012    
LIVE TV http://www.abc3340.com/
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1858. emguy 04:04 AM GMT del 03 Marzo 2012    
Quoting hurricanehunter27:
I was just pointing out the fact that it seems that they may have not been totally destroyed like we previously thought. What happened there was terrible and I don't need you telling me that.


Sorry...maybe I'm a little bit touchy. I spent weeks there and really thought a lot of these folks. It just kinda read that way. This is a close knit town of special folks.

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1859. StormTracker2K 04:04 AM GMT del 03 Marzo 2012    
North FL & maybe C FL really need to monitor things tomorrow evening as a dangerous event could re-energize tomorrow night. Not good folks!
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1860. Ameister12 04:05 AM GMT del 03 Marzo 2012    
Quoting hurricanehunter27:
But what do they mean by that? Could be just a ton of downed trees.

It has been reported that people are trapped in buildings.
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1861. xcool 04:05 AM GMT del 03 Marzo 2012    
BYE
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1862. hurricanehunter27 04:06 AM GMT del 03 Marzo 2012    
Watch this storm starting to get rotation on it.
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1864. KEEPEROFTHEGATE (Mod) 04:06 AM GMT del 03 Marzo 2012    
Quoting Bluestorm5:
Finally a good picture of downtown West Liberty... oh my god.



that damage appears to be EF3 or greater
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1865. hurricanehunter27 04:06 AM GMT del 03 Marzo 2012    
Quoting Ameister12:

It has been reported that people are trapped in buildings.
Alright I missed that.
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1866. StormTracker2K 04:07 AM GMT del 03 Marzo 2012    
here's the impulse that could trigger round 2 late tomorrow.



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1867. GeorgiaStormz 04:08 AM GMT del 03 Marzo 2012    


N of montgomery. Ouch. classic
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1868. TropicalAnalystwx13 04:08 AM GMT del 03 Marzo 2012    
Quoting hurricanehunter27:
Watch this storm starting to get rotation on it.

NO! No more!

We've finally made it down to just two tornado warnings after our peak of 31 at one time.
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1869. StormTracker2K 04:10 AM GMT del 03 Marzo 2012    
Major damage in Dallas,GA in Paulding County.
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1870. hurricanehunter27 04:10 AM GMT del 03 Marzo 2012    
Quoting TropicalAnalystwx13:

NO! No more!

We've finally made it down to just two tornado warnings after our peak of 31 at one time.
Getting stronger.
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1871. hurricanehunter27 04:11 AM GMT del 03 Marzo 2012    

* TORNADO WARNING FOR...
NORTHEASTERN CLAY COUNTY IN EAST CENTRAL ALABAMA...
SOUTHWESTERN CLEBURNE COUNTY IN EAST CENTRAL ALABAMA...
NORTHWESTERN RANDOLPH COUNTY IN EAST CENTRAL ALABAMA...
EAST CENTRAL TALLADEGA COUNTY IN EAST CENTRAL ALABAMA...
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1872. TropicalAnalystwx13 04:11 AM GMT del 03 Marzo 2012    
Quoting hurricanehunter27:
Getting stronger.

Yes, it just went tornado warned.
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1873. StormTracker2K 04:11 AM GMT del 03 Marzo 2012    
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1874. SPLbeater 04:11 AM GMT del 03 Marzo 2012    
night all :D
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1875. KoritheMan 04:11 AM GMT del 03 Marzo 2012    
Unbelievable:

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1876. hurricanehunter27 04:11 AM GMT del 03 Marzo 2012    
Quoting hurricanehunter27:
Getting stronger.
Also this storm will go into Downtown Atlanta later tonight.
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1877. Ameister12 04:13 AM GMT del 03 Marzo 2012    
This is a classic circulation.
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1878. TropicalAnalystwx13 04:13 AM GMT del 03 Marzo 2012    
This system really has been an overachiever

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1879. KEEPEROFTHEGATE (Mod) 04:14 AM GMT del 03 Marzo 2012    
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1880. TheOnlyBravesFan 04:15 AM GMT del 03 Marzo 2012    
Quoting hurricanehunter27:
Also this storm will go into Downtown Atlanta later tonight.
No!!!! I hope that doesn't happen. Last thing we need is a tornado in Atlanta.
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1881. StormTracker2K 04:15 AM GMT del 03 Marzo 2012    
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1882. TropicalAnalystwx13 04:15 AM GMT del 03 Marzo 2012    
The other tornado producing storm:

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1883. Chapelhill 04:16 AM GMT del 03 Marzo 2012    
Quoting TropicalAnalystwx13:

Yes, it just went tornado warned.
There has been some isolatiion there on the south end of this event. It may continue to propagate into n central GA/ central GA over night.
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1884. KEEPEROFTHEGATE (Mod) 04:16 AM GMT del 03 Marzo 2012    
been a long day and night for this guy going to take a break for a hr or so been here since 10 am this morning
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1885. Chapelhill 04:18 AM GMT del 03 Marzo 2012    
Quoting StormTracker2K:
Where was the pic taken?
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1886. hurricanehunter27 04:18 AM GMT del 03 Marzo 2012    
RADAR IMAGERY SHOWS AN INTENSE AND LIKELY TORNADIC SUPERCELL
EXHIBITING VELOCITIES SEEMINGLY CONDUCIVE FOR A STRONG TORNADO
--STRADDLING CHILTON AND AUTAUGA COUNTIES IN ALABAMA-- WITH THIS
STORM PROJECTED TO MOVE INTO E-CNTRL AL WITHIN A FAVORABLY
MOIST/UNSTABLE LOW LEVEL AIRMASS. KMXX VAD SHOWS 400-500 0-1 KM SRH
WHICH WILL SUPPORT NOT ONLY SUSTAINING LOW LEVEL MESOCYCLONES BUT
POSE THE RISK FOR MULTIPLE TORNADOES WITH ANY VIGOROUS SUPERCELL
MOVING FROM CNTRL AL EWD INTO WRN GA.
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1887. AllyBama 04:18 AM GMT del 03 Marzo 2012    
All is still quiet here along the coast..I sure wish the storms would come on through..
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1888. Ameister12 04:18 AM GMT del 03 Marzo 2012    
I'm trying to find up close footage of the Henryville tornado I've seen on TV today. It's very amazing footage.
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1889. GeorgiaStormz 04:18 AM GMT del 03 Marzo 2012    
Alabama tornado:
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1890. TropicalAnalystwx13 04:19 AM GMT del 03 Marzo 2012    
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1017 PM CST FRI MAR 2 2012

ALC121-030427-
/O.CAN.KBMX.TO.W.0027.000000T0000Z-120303T0500Z/
TALLADEGA AL-
1017 PM CST FRI MAR 2 2012

...THE TORNADO WARNING FOR EAST CENTRAL TALLADEGA COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

TO REPORT SEVERE WEATHER...CALL 1-800-856-0758.

LAT...LON 3341 8544 3337 8592 3339 8593 3345 8592
3346 8591 3364 8553
TIME...MOT...LOC 0417Z 253DEG 41KT 3342 8586

$$
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1891. StormTracker2K 04:19 AM GMT del 03 Marzo 2012    
Quoting Chapelhill:
Where was the pic taken?


The last one was West Liberty, Kentucky.
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1892. TheOnlyBravesFan 04:20 AM GMT del 03 Marzo 2012    
Quoting KEEPEROFTHEGATE:
been a long day and night for this guy going to take a break for a hr or so been here since 10 am this morning


Real men don't take breaks, I've been checking storms since 8am EST :D.... take it and enjoy man, you've earned it. thanks for all the pictures/info you rolled.
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1893. TheOnlyBravesFan 04:22 AM GMT del 03 Marzo 2012    
Might just be me, but these storms in Alabama don't really impress me now. Look like slight risk worthy storms. Hard for me to believe our moderates came from 3-4 supercells in eastern alabama/western georgia

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1894. KoritheMan 04:22 AM GMT del 03 Marzo 2012    
Quoting AllyBama:
All is still quiet here along the coast..I sure wish the storms would come on through..


Kathleen, things will likely remain quiet for us. At least insofar as tornadic potential is concerned. At most I'd be concerned with the possibility of briefly damaging wind gusts, and even that seems unlikely.
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1895. ChillinInTheKeys 04:24 AM GMT del 03 Marzo 2012    
Quoting GeorgiaStormz:
Alabama tornado:


No, that looks like a pig that ate Fukushima spinach.
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1896. TropicalAnalystwx13 04:24 AM GMT del 03 Marzo 2012    
AT 1019 PM CST...EMERGENCY MANAGEMENT REPORTED EXTENSIVE DAMAGE FROM
A POSSIBLE TORNADO.

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1897. AllyBama 04:25 AM GMT del 03 Marzo 2012    
Quoting KoritheMan:


Kathleen, things will likely remain quiet for us. At least insofar as tornadic potential is concerned. At most I'd be concerned with the possibility of briefly damaging wind gusts, and even that seems unlikely.


HI...that is what I am thinking too..of course the winds will bring down limbs and possiblly some trees..and I have LOTS of them around my house!!..lol
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1898. Chapelhill 04:27 AM GMT del 03 Marzo 2012    
Quoting TropicalAnalystwx13:
AT 1019 PM CST...EMERGENCY MANAGEMENT REPORTED EXTENSIVE DAMAGE FROM
A POSSIBLE TORNADO.

Please post location.
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1899. OracleDeAtlantis 04:27 AM GMT del 03 Marzo 2012    
I suspect that fooling Mother Nature pales in comparison to making war on her, as we have done.

What do you think fellas? I'm thinking .... Joan Crawford, and wire coat hangers.


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1900. TropicalAnalystwx13 04:29 AM GMT del 03 Marzo 2012    
We have a large, damaging, rain-wrapped tornado on the ground in Coosa county, Alabama.

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1901. ShenValleyFlyFish 04:30 AM GMT del 03 Marzo 2012    
These folks are doing a good job. May want to follow if you are in 'Bama.

WSB-TV LIVE

Sorry Georgia Atlanta station
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About JeffMasters
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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