

745 

WWUS20 KWNS 190314

SEL8

SPC WW 190314

ALZ000-FLZ000-GAZ000-SCZ000-191000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 28

NWS STORM PREDICTION CENTER NORMAN OK

1015 PM EST WED FEB 18 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHEAST ALABAMA

       FLORIDA PANHANDLE

       CENTRAL AND SOUTHWEST GEORGIA

       CENTRAL SOUTH CAROLINA



EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 1015 PM

UNTIL 500 AM EST.



HAIL TO 1.5 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 100

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

MACON GEORGIA TO 35 MILES SOUTH OF PANAMA CITY FLORIDA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU8).



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 25...WW 26...WW 27...



DISCUSSION...STRONG/SEVERE THUNDERSTORMS CONTINUE TO AFFECT PARTS OF

AL/GA/FL...IN REGION OF STRONG LOW LEVEL SHEAR AND AT LEAST MARGINAL

INSTABILITY.  OVERALL TRENDS HAVE DECREASED SOMEWHAT IN THE PAST

HOUR AS THE BOUNDARY LAYER DECOUPLES...SUGGESTING LARGE HAIL IS NOW

THE PRIMARY SEVERE THREAT.  HOWEVER...AN ISOLATED TORNADO CANNOT BE

RULED OUT OVERNIGHT.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1.5 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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