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999 

WWUS20 KWNS 201602

SEL2

SPC WW 201602

ALZ000-MSZ000-202200-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 742

NWS STORM PREDICTION CENTER NORMAN OK

1005 AM CST THU DEC 20 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHWESTERN ALABAMA

       SOUTHEASTERN MISSISSIPPI



EFFECTIVE THIS THURSDAY MORNING AND AFTERNOON FROM 1005 AM UNTIL

400 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 40 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 20 MILES NORTH OF PINE BELT

MISSISSIPPI TO 100 MILES EAST OF PINE BELT MISSISSIPPI.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU2).



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 741...



DISCUSSION...DESPITE WEAK INSTABILITY AND SLIGHTLY ELEVATED STORM

UPDRAFT ROOTS ...TORNADO POTENTIAL WILL EXIST INTO THE AFTERNOON

HOURS WITH MESOLOW THAT WILL TRACK EWD FROM SERN MS INTO SWRN AL.



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 400.

MEAN STORM MOTION VECTOR 25045.





...IMY

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