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068 

WWUS20 KWNS 052116

SEL0

SPC WW 052116

ALZ000-FLZ000-CWZ000-060400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 40

NWS STORM PREDICTION CENTER NORMAN OK

315 PM CST SAT MAR 5 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF SOUTHERN ALABAMA

       WESTERN FLORIDA PANHANDLE

       COASTAL WATERS



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 315 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 65 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 35 MILES NORTH NORTHWEST OF

MOBILE ALABAMA TO 30 MILES SOUTH SOUTHEAST OF MARIANNA FLORIDA.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU0).



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...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 39. WATCH NUMBER 39 WILL NOT BE IN EFFECT AFTER 315

PM CST.



DISCUSSION...SEVERE THUNDERSTORMS THAT MOVED ACROSS SRN LA ARE

CONTINUING EWD AS THE STRONG UPPER TROUGH APPROACHES FROM THE W.

WHILE THE AIR MASS AHEAD OF THE STORMS IS NOT QUITE AS UNSTABLE AS

EARLIER OVER LA...SHEAR PROFILES REMAIN VERY FAVORABLE FOR SUPERCELL

POTENTIAL AS WELL AS MAINTAINING THE CURRENT SQUALL LINE. GREATEST

SEVERE THREAT WILL BE COASTAL AREAS AND OFFSHORE WHERE INSTABILITY

IS MOST FAVORABLE.



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 24035.





...HALES

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