Historic Multi Day Tornado/Flooding Event 4/23-28/2011

[RL3AO]

150kt gate to gate shear.

[Brent]

In case anyone missed it...

[RL3AO]

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 PM CDT FOR WEST
CENTRAL LAWRENCE...SOUTH CENTRAL COLBERT AND FRANKLIN COUNTIES...

...THIS IS A TORNADO EMERGENCY...

AT 324 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A LARGE TORNADO ON
THE GROUND NEAR HACKLEBURG. THIS TORNADO WAS MOVING NORTHEAST AT 55
MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
BELGREEN...PHIL CAMPBELL...SPRUCE PINE... ROCKWOOD...
ISBELL...RUSSELLVILLE...CROOKED OAK...PLEASANT RIDGE...
THARPTOWN...NEWBURG...LITTLEVILLE...COLBERT HEIGHTS...MT HOPE...LA
GRANGE...SPRING VALLEY AND LANDERSVILLE.

[Dave]

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 238
NWS STORM PREDICTION CENTER NORMAN OK
335 PM CDT WED APR 27 2011

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

MIDDLE AND EASTERN TENNESSEE

EFFECTIVE THIS WEDNESDAY AFTERNOON FROM 335 PM UNTIL MIDNIGHT CDT.

...THIS IS A PARTICULARLY DANGEROUS SITUATION...

DESTRUCTIVE TORNADOES...LARGE HAIL TO 3 INCHES IN DIAMETER...
THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE
POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 50 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 70 MILES WEST SOUTHWEST OF
NASHVILLE TENNESSEE TO 25 MILES EAST OF KNOXVILLE TENNESSEE. FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU8).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

OTHER WATCH INFORMATION...CONTINUE...WW 232...WW 233...WW
234...WW 235...WW 236...

DISCUSSION...A VERY UNSTABLE AIRMASS IS EXPECTED TO GRADUALLY
DEVELOP NORTHWARD INTO TN THIS EVENING IN THE WAKE OF A MORNING MCS.
WITHIN AN INCREASINGLY SHEARED ENVIRONMENT...ACCENTUATED BY
LONG/CURVING LOW LEVEL HODOGRAPHS...SUPERCELLS CAPABLE OF TORNADOES
/SOME STRONG/ WILL BE AN INCREASING/MORE WIDESPREAD CONCERN INTO
THIS EVENING.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 24040.

[RL3AO]

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
340 PM CDT WED APR 27 2011

MSC017-057-081-095-272115-
/O.CON.KMEG.TO.W.0125.000000T0000Z-110427T2115Z/
LEE MS-ITAWAMBA MS-MONROE MS-CHICKASAW MS-
340 PM CDT WED APR 27 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR
NORTHEASTERN CHICKASAW...NORTHERN MONROE...SOUTHERN ITAWAMBA AND
SOUTHEASTERN LEE COUNTIES...

AT 339 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR AND STORM
SPOTTERS WERE TRACKING A LARGE AND EXTREMELY DANGEROUS TORNADO. THE
FIRE DEPARTMENT REPORTED A TORNADO ON THE GROUND NEAR OKOLONA AT 328
PM. THIS TORNADO WAS NOW LOCATED NEAR WREN...OR 7 MILES WEST OF
AMORY...MOVING NORTHEAST AT 60 MPH. THIS A DANGEROUS SITUATION.
PEOPLE NEAR AMORY NEED TO TAKE COVER IMMEDIATELY.

[Dave]

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 237
NWS STORM PREDICTION CENTER NORMAN OK
330 PM CDT WED APR 27 2011

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

NORTHEAST ARKANSAS
SOUTHERN ILLINOIS
SOUTHERN INDIANA
WESTERN KENTUCKY
SOUTHEAST MISSOURI INCLUDING THE BOOTHEEL
WEST TENNESSEE

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 330 PM UNTIL
1100 PM CDT.

TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES WEST NORTHWEST OF
EVANSVILLE INDIANA TO 45 MILES SOUTH OF JACKSON TENNESSEE. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU7).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

OTHER WATCH INFORMATION...CONTINUE...WW 231...WW 232...WW
233...WW 234...WW 235...WW 236...

DISCUSSION...DISCRETE THUNDERSTORM DEVELOPMENT IS OCCURRING OVER
NORTHEAST AR AND WEST TN...IN REGION WHERE SUBSTANTIAL LOW LEVEL
DESTABILIZATION IS OCCURRING. GIVEN THE APPROACH OF DEEP SURFACE
LOW...POTENTIAL IS INCREASING FOR TORNADIC SUPERCELLS AS FAR NORTH
AS THE LOWER OH RIVER VALLEY THROUGH THE EVENING.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 24035.

[RL3AO]

From left to right

Cell 1 - Tornado emergency
Cell 2- Radar indicated
Cell 3 - Tornado emergency

[RL3AO]

Currently 24 tornado warnings. Everything is going tornadic. Everything is developing hooks.

[Extratropical94]

tornado probs for #237 are 70/40
and for #238 they are 90/80

[Dave]

This is in Watch 237

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE PADUCAH KY
343 PM CDT WED APR 27 2011

THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A

* TORNADO WARNING FOR...
CENTRAL BOLLINGER COUNTY IN SOUTHEAST MISSOURI...
SOUTHWESTERN CAPE GIRARDEAU COUNTY IN SOUTHEAST MISSOURI...

* UNTIL 400 PM CDT.

* AT 341 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR LEOPOLD...
MOVING NORTHEAST AT 60 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
LEOPOLD...
MARBLE HILL...
DELTA...
BURFORDVILLE...
MILLERSVILLE...

[Dave]

Watch 237

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE PADUCAH KY
341 PM CDT WED APR 27 2011

THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A

* TORNADO WARNING FOR...
NORTHERN BOLLINGER COUNTY IN SOUTHEAST MISSOURI...

* UNTIL 400 PM CDT.

* AT 337 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 5 MILES
NORTHWEST OF PATTON...MOVING NORTHEAST AT 60 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
PATTON...
ALLIANCE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
LARGE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

[RL3AO]

Can't keep track. At least 7 tornadoes on the ground right now with 3 or 4 wedges that have caused damage.

[RL3AO]

Forbes going 10/10 on TORCON for the first time.

[Dave]

In watch #237...

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE PADUCAH KY
352 PM CDT WED APR 27 2011

THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A

* TORNADO WARNING FOR...
NORTHEASTERN BOLLINGER COUNTY IN SOUTHEAST MISSOURI...
NORTHERN CAPE GIRARDEAU COUNTY IN SOUTHEAST MISSOURI...
PERRY COUNTY IN SOUTHEAST MISSOURI...

* UNTIL 415 PM CDT.

* AT 350 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
ALLIANCE...MOVING NORTHEAST AT 60 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
ALLIANCE...
MILLERSVILLE...
DAISY...
PERRYVILLE...
ALTENBURG...

[Dave]

I'm showing 31 tornado warnings and 14 t-storm warnings right now...holding mainly to watch 237 because it touches SW Indiana and may be coming up our way later tonight.

[RL3AO]

If SPC had an update in the next hour, they would without a doubt raise the tornado percentage to 60%.

[Dave]

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE PADUCAH KY
355 PM CDT WED APR 27 2011

THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A

* TORNADO WARNING FOR...
SOUTHEASTERN BOLLINGER COUNTY IN SOUTHEAST MISSOURI...
SOUTHWESTERN CAPE GIRARDEAU COUNTY IN SOUTHEAST MISSOURI...
NORTH CENTRAL NEW MADRID COUNTY IN SOUTHEAST MISSOURI...
WESTERN SCOTT COUNTY IN SOUTHEAST MISSOURI...
STODDARD COUNTY IN SOUTHEAST MISSOURI...

* UNTIL 430 PM CDT.

* AT 350 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
BLOOMFIELD...MOVING NORTHEAST AT 60 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
BLOOMFIELD...
ESSEX...
DEXTER...
BELL CITY...
MOREHOUSE...
SIKESTON...
MINER...
MORLEY...
HAY-WOOD CITY...
ORAN...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

NOW IS THE TIME TO IMPLEMENT YOUR TORNADO PLAN OF ACTION. SEEK
SHELTER INDOORS IN A BASEMENT...OR IN AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A HOME OR BUILDING.

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
LARGE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

[Dave]

Boot heel of MO is firing up now....west of Paducah KY

[RL3AO]

358 PM CDT WED APR 27 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR WEST CENTRAL TUSCALOOSA
AND EASTERN PICKENS COUNTIES UNTIL 415 PM CDT...

...TORNADO EMERGENCY FOR REFORM AND LUBBUB...

AT 356 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR AND STORM
SPOTTERS WERE TRACKING A LARGE AND EXTREMELY DANGEROUS TORNADO. THIS
TORNADO WAS LOCATED NEAR REFORM...MOVING NORTHEAST AT 50 MPH.

THE TORNADO WILL BE NEAR...
ASHCRAFT CORNER AROUND 405 PM CDT.

[RL3AO]

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
400 PM CDT WED APR 27 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* TORNADO WARNING FOR...
SOUTHERN FAYETTE COUNTY IN WEST CENTRAL ALABAMA...
NORTHEASTERN PICKENS COUNTY IN WEST CENTRAL ALABAMA...
NORTHWESTERN TUSCALOOSA COUNTY IN WEST CENTRAL ALABAMA...
WALKER COUNTY IN CENTRAL ALABAMA...

* UNTIL 500 PM CDT

* AT 356 PM CDT...STORM SPOTTERS AND THE NATIONAL WEATHER SERVICE
WERE TRACKING A LARGE AND EXTREMELY DANGEROUS TORNADO NEAR REFORM.
DOPPLER RADAR SHOWED THIS TORNADO MOVING NORTHEAST AT 55 MPH.

* THE TORNADO WILL BE NEAR...
BERRY AND BANKSTON AROUND 425 PM CDT.
BOLEY SPRINGS AROUND 430 PM CDT.
OAKMAN AROUND 440 PM CDT.
PARRISH AROUND 445 PM CDT.
JASPER AND CORDOVA AROUND 450 PM CDT.
LYNNS PARK...SIPSEY AND CURRY AROUND 455 PM CDT.