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021 

WWUS20 KWNS 012142

SEL1

SPC WW 012142

ARZ000-LAZ000-MSZ000-TNZ000-020300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 21

NWS STORM PREDICTION CENTER NORMAN OK

345 PM CST WED FEB 1 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EASTERN ARKANSAS

       NORTHEAST LOUISIANA

       NORTHWEST MISSISSIPPI

       EXTREME SOUTHWEST TENNESSEE



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 345 PM UNTIL

900 PM CST.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 40

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH

NORTHWEST OF MEMPHIS TENNESSEE TO 75 MILES SOUTH SOUTHWEST OF

GREENVILLE MISSISSIPPI.  FOR A COMPLETE DEPICTION OF THE WATCH

SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 20...



DISCUSSION...A CLUSTER OF STRONG/SEVERE THUNDERSTORMS OVER AR WILL

CONTINUE TO TRACK EASTWARD THIS AFTERNOON AND EARLY EVENING INTO

SOUTHWEST TN AND NORTHERN MS.  STEEP LOW/MID LEVEL LAPSE RATES AND

STRONG WINDS ALOFT WILL PROMOTE A RISK OF HAIL AND GUSTY/DAMAGING

WINDS IN THE STRONGER CELLS AT LEAST THROUGH SUNSET.



AVIATION...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 27035.





...HART

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