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URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 98

NWS STORM PREDICTION CENTER NORMAN OK

130 PM CDT THU APR 11 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHWEST AND SOUTH CENTRAL ALABAMA

       THE WESTERN FLORIDA PANHANDLE

       COASTAL WATERS



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 130 PM UNTIL

800 PM CDT.



TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND

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

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE

MILES EAST AND WEST OF A LINE FROM 50 MILES NORTH OF EVERGREEN

ALABAMA TO 35 MILES SOUTH SOUTHEAST OF MOBILE ALABAMA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU8).



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 95...WW 96...WW 97...



DISCUSSION...A LINE OF SEVERE STORMS ALONG THE COLD FRONT IN SRN MS

WILL MOVE EWD INTO SW AL BY ABOUT 20Z...WHILE OTHER PRE-FRONTAL

SHOWERS OVER S CENTRAL AL POTENTIALLY DEVELOP INTO THUNDERSTORMS.

VERTICAL SHEAR AND INSTABILITY ARE FAVORABLE FOR MAINTENANCE OF THE

LINE OF STORMS...AS WELL AS PRE-FRONTAL SUPERCELL DEVELOPMENT.  A

FEW TORNADOES...DAMAGING WINDS...AND ISOLATED LARGE HAIL ARE ALL

POSSIBLE THROUGH THE AFTERNOON.



AVIATION...TORNADOES AND 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

500. MEAN STORM MOTION VECTOR 25035.





...THOMPSON

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