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Severe Weather Threat in Dixie Alley/OV Feb 27 - Mar 1


Fred Gossage

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WWUS20 KWNS 280123

SEL4

SPC WW 280123

KSZ000-MOZ000-280900-

URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 24

NWS STORM PREDICTION CENTER NORMAN OK

725 PM CST SUN FEB 27 2011

THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF

A SMALL PART OF SOUTHEAST KANSAS

SOUTHWEST AND SOUTH CENTRAL MISSOURI

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 725 PM UNTIL

300 AM CST.

TORNADOES...HAIL TO 2 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 NORTH AND SOUTH OF A LINE FROM 35 MILES NORTHWEST OF JOPLIN

MISSOURI TO 50 MILES SOUTHEAST OF VICHY MISSOURI. FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU4).

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 20...WW 21...WW 23...

DISCUSSION...ISOLATED SEVERE/SUPERCELL STORMS ARE TRACKING EASTWARD

ACROSS SOUTHEAST KS THIS EVENING...AND WILL MOVE INTO SOUTHWEST MO

IN THE NEXT FEW HOURS. OTHER STORMS ARE EXPECTED TO INTENSIFY

ACROSS THE WATCH AREA AS THE UPPER TROUGH APPROACHES AND THE LOW

LEVEL JET STRENGTHENS. STRONG LOW LEVEL VERTICAL SHEAR WILL BE

FAVORABLE FOR SUPERCELLS AND TORNADOES. STRONG TORNADOES WILL ALSO

BE A THREAT WITH ANY LONG-LIVED CIRCULATIONS.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 25040.

...HART

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FWIW, CAP broke in Nashvegas today about 3 PM...a few clouds tried to organize but I could still see stars when I went to get some groceries at Publix 30 minutes ago...

Not many folks talked about Nashville last Thursday (re: potential to develop severe storms), but I'd say we're going to see something very significant in my local and surrounding areas over the next 36 hours.

BTW, we've got that 'pre-hurricane' bath-water air feeling going on currently (went outside).

EDIT* On second thought, maybe I don't know as much about 'CAPS' as I thought? All that insignifcant rain showing on the Nashville RADAR would suggest a CAP does exist, correct?

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Muggy up here - temps continue to rise. Believe storm initiation should be within the next 1-2 hours in our area. Defin has been a long day watching and waiting. 850 winds are picking up and should really pick up over the next few hours. Seems like these bigger events are like this - hurry up and wait.

Beau, BTW, just want to thank you for all your expertise. From Easternuswx over to here, I've always appreciated your guidance and analysis.

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FWIW, CAP broke in Nashvegas today about 3 PM...a few clouds tried to organize but I could still see stars when I went to get some groceries at Publix 30 minutes ago...

Not many folks talked about Nashville last Thursday (re: potential to develop severe storms), but I'd say we're going to see something very significant in my local and surrounding areas over the next 36 hours.

BTW, we've got that 'pre-hurricane' bath-water air feeling going on currently (went outside).

EDIT* On second thought, maybe I don't know as much about 'CAPS' as I thought? All that insignifcant rain showing on the Nashville RADAR would suggest a CAP does exist, correct?

that is not breaking the cap..breaking the cap is when you get DMC (deep moist convection)

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BULLETIN - EAS ACTIVATION REQUESTED

TORNADO WARNING

NATIONAL WEATHER SERVICE ST LOUIS MO

802 PM CST SUN FEB 27 2011

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...

PIKE COUNTY IN WEST CENTRAL ILLINOIS...

NORTHWESTERN PIKE COUNTY IN NORTHEAST MISSOURI...

* UNTIL 830 PM CST

* AT 759 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A

SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS

STORM WAS LOCATED NEAR SPENCERBURG...OR 10 MILES NORTHEAST OF

VANDALIA...AND MOVING NORTHEAST AT 65 MPH.

* LOCATIONS IMPACTED INCLUDE...

LOUISIANA...PITTSFIELD...PIKE...ATLAS...GRIGGSVILLE...ASHBURN...NEW

CANTON...ROCKPORT...EL DARA...SUMMER HILL...NEW HARTFORD...

MARTINSBURG...INDEPENDENCE...NEW SALEM...TIME...DETROIT...PERRY...

MILTON AND FLORENCE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A

STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR

OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND

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BULLETIN - EAS ACTIVATION REQUESTED

TORNADO WARNING

NATIONAL WEATHER SERVICE SPRINGFIELD MO

805 PM CST SUN FEB 27 2011

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* TORNADO WARNING FOR...

NORTHERN CHEROKEE COUNTY IN SOUTHEAST KANSAS...

SOUTHERN CRAWFORD COUNTY IN SOUTHEAST KANSAS...

* UNTIL 845 PM CST.

* AT 804 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A

TORNADO 10 MILES WEST OF SHERMAN...OR 10 MILES NORTHWEST OF

OSWEGO...MOVING EAST AT 50 MPH. THIS STORM HAS A HISTORY OF

PRODUCING TORNADOES.

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MESOSCALE DISCUSSION 0157

NWS STORM PREDICTION CENTER NORMAN OK

0807 PM CST SUN FEB 27 2011

AREAS AFFECTED...ERN OK...WRN AR...NERN TX

CONCERNING...SEVERE POTENTIAL...WATCH LIKELY

VALID 280207Z - 280300Z

00Z NAM/LATEST HRRR CONTINUE TO OFFER THE BEST GUIDANCE THIS EVENING

AND SUGGEST THAT THE DEVELOPING CONVECTION NEAR THE ADVANCING

DRYLINE/PACIFIC FRONT WILL INDEED DEEPEN THIS EVENING. THIS IS IN

RESPONSE TO LARGER-SCALE ASCENT FINALLY SPREADING EWD ATOP THE MOIST

WARM SECTOR EFFECTIVELY WEAKENING INHIBITION.

EXPECT THAT ANY STORM THAT CAN BECOME SUSTAINED WILL BE EMBEDDED IN

200-400 M2/S2...HIGHEST ACROSS NE OK AND ALONG THE OK/AR BORDER.

INDICATIONS ARE THAT THE CELLS WILL BECOME LINEAR QUICKLY WITH

POSSIBLE EMBEDDED BOWS/ROTATING STORMS CAPABLE OF TORNADOES.

OTHERWISE...CORRIDORS OF HIGH WIND MAY EVOLVE ACROSS FAR ERN OK AND

AR LATER THIS EVENING...WITH THE SVR THREAT BACKBUILDING SWWD INTO

FAR NE TX AS WELL.

..RACY.. 02/28/2011

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