

495 

WWUS20 KWNS 242320

SEL5

SPC WW 242320

KYZ000-MOZ000-250400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 15

NWS STORM PREDICTION CENTER NORMAN OK

520 PM CST THU FEB 24 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       WESTERN KENTUCKY

       SOUTHEAST MISSOURI



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 520 PM UNTIL

1000 PM CST.



TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS

TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 25 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 80 MILES WEST SOUTHWEST OF

PADUCAH KENTUCKY TO 105 MILES EAST OF PADUCAH KENTUCKY.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU5).



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 13...WW 14...



DISCUSSION...FAST-MOVING LINE OF THUNDERSTORMS OVER AR WILL TRACK

NORTHEASTWARD ALONG SURFACE WARM FRONT INTO WESTERN KY DURING THE

NEXT FEW HOURS.  DESPITE MARGINAL INSTABILITY...STRONG SURFACE

PRESSURE FALLS AND FAVORABLE LOW LEVEL VERTICAL SHEAR SUGGEST AN

INCREASING RISK OF SUPERCELL/BOW ECHO STRUCTURES CAPABLE OF DAMAGING

WINDS AND ISOLATED TORNADOES.



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

SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND

GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.

MEAN STORM MOTION VECTOR 25045.





...HART

