

709 

WWUS20 KWNS 281644

SEL5

SPC WW 281644

ALZ000-FLZ000-LAZ000-MSZ000-CWZ000-290000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 745

NWS STORM PREDICTION CENTER NORMAN OK

1045 AM CST FRI DEC 28 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHERN AND EASTERN ALABAMA

       THE WESTERN FLORIDA PANHANDLE

       SOUTHEAST LOUISIANA

       SOUTHEAST MISSISSIPPI

       COASTAL WATERS



EFFECTIVE THIS FRIDAY MORNING AND EVENING FROM 1045 AM UNTIL 600

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 EAST AND WEST OF A LINE FROM 15 MILES NORTH OF ANNISTON

ALABAMA TO 30 MILES WEST SOUTHWEST OF BOOTHVILLE LOUISIANA.  FOR

A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU5).



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.



DISCUSSION...A BROKEN BAND OF STORMS IS EXPECTED TO INTENSIFY ALONG

THE COLD FRONT THIS AFTERNOON FROM SE LA INTO SE MS AND CENTRAL AL.

FARTHER SE...PRE-FRONTAL STORMS WILL INCREASE IN COVERAGE ACROSS SRN

AL THROUGH THE AFTERNOON.  BOUNDARY LAYER DEWPOINTS IN THE 60S AND

SURFACE HEATING WILL CONTRIBUTE TO SUFFICIENT INSTABILITY FOR SEVERE

STORMS...AND VERTICAL SHEAR SHOULD REMAIN FAVORABLE FOR SUPERCELLS

THROUGH THE AFTERNOON.  A FEW TORNADOES AND DAMAGING WIND GUSTS WILL

BE THE MAIN SEVERE STORM THREATS.



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 25035.





...THOMPSON

