

000 

WWUS20 KWNS 052112

SEL7

SPC WW 052112

ARZ000-ILZ000-INZ000-KYZ000-MOZ000-MSZ000-TNZ000-060600-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 37

NWS STORM PREDICTION CENTER NORMAN OK

310 PM CST TUE FEB 5 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EASTERN ARKANSAS

       SOUTHERN ILLINOIS

       SOUTHWEST INDIANA

       WESTERN KENTUCKY

       SOUTHEAST MISSOURI

       CENTRAL AND NORTHERN MISSISSIPPI

       WESTERN TENNESSEE



EFFECTIVE THIS TUESDAY AFTERNOON FROM 310 PM UNTIL MIDNIGHT CST.



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



DESTRUCTIVE TORNADOES...LARGE 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 85 STATUTE

MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH OF CAPE

GIRARDEAU MISSOURI TO 25 MILES EAST OF JACKSON MISSISSIPPI.  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 34...WW 35...WW 36...



DISCUSSION...COMPLEX SITUATION EVOLVING THIS AFTERNOON WITH

SCATTERED THUNDERSTORMS DEVELOPING IN THE OPEN WARM SECTOR FROM MS

NWD INTO WRN TN/KY.  ADDITIONAL SEVERE STORMS WILL MOVE INTO NW MS

FROM AR/LA...AND INTO TN/KY/IL/INDIANA FROM THE W BY EARLY TONIGHT

IN ASSOCIATION WITH THE PRIMARY SYNOPTIC SYSTEM NOW LOCATED FARTHER

TO THE W.  MODERATE INSTABILITY AND BOUNDARY LAYER DEWPOINTS IN THE

60S COVER A WIDE AREA...WHILE LOCAL VWP/S AND FORECAST SOUNDINGS

SHOW STRONG VERTICAL SHEAR OVER THE MAJORITY OF THE WARM SECTOR.

THE NET RESULT WILL BE A THREAT FOR SCATTERED TORNADIC SUPERCELLS

THROUGH THE AFTERNOON...FOLLOWED BY SUPERCELLS/BOW ECHOES WITH THE

LATER CONVECTION TONIGHT.  A FEW STRONG TORNADOES AND LARGE HAIL

WILL BE THE MAIN SEVERE THREATS THIS AFTERNOON...WHILE THE DAMAGING

WIND THREAT WILL INCREASE AS WELL INTO TONIGHT AS THE MORE

WIDESPREAD CONVECTION MOVES E OF THE MS RIVER.



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

450. MEAN STORM MOTION VECTOR 23050.





...THOMPSON

