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933 

WWUS20 KWNS 120809

SEL1

SPC WW 120809

ALZ000-MSZ000-121300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 31

NWS STORM PREDICTION CENTER NORMAN OK

210 AM CST FRI MAR 12 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       ALABAMA

       FAR SOUTHEAST MISSISSIPPI



EFFECTIVE THIS FRIDAY MORNING FROM 210 AM UNTIL 700 AM CST.



HAIL TO 2.5 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 75

STATUTE MILES EAST AND WEST OF A LINE FROM 80 MILES SOUTHWEST OF

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 30...



DISCUSSION...INTENSE UPPER SYSTEM WILL CONTINUE TO FOCUS STRONG TO

SEVERE THUNDERSTORM DEVELOPMENT EWD ACROSS THE CENTRAL GULF COAST

STATES EARLY THIS MORNING.  STEEP LAPSE RATES AND SUFFICIENT SHEAR

FOR ELEVATED SUPERCELLS ARE EXPECTED TO SUSTAIN A RISK OF LARGE HAIL

AND ISOLATED DAMAGING WINDS.



AVIATION...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 400. MEAN STORM

MOTION VECTOR 24035.





...EVANS

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