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WWUS20 KWNS 090037

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ALZ000-MSZ000-TNZ000-090700-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 11

NWS STORM PREDICTION CENTER NORMAN OK

640 PM CST TUE JAN 8 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHERN AND WESTERN ALABAMA

       EASTERN AND SOUTHERN MISSISSIPPI

       MIDDLE TENNESSEE



EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 640 PM

UNTIL 100 AM 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 75 STATUTE

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

CROSSVILLE TENNESSEE TO 20 MILES EAST SOUTHEAST OF MC COMB

MISSISSIPPI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).



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 10. WATCH NUMBER 10 WILL NOT BE IN EFFECT AFTER 640

PM CST. CONTINUE...WW 9...



DISCUSSION...CHANCE FOR ISOLD TORNADOES AND LOCALLY DAMAGING WIND

EXPECTED TO PERSIST FROM THE MID TN VLY S INTO SRN MS/WRN AL THIS

EVENING AS PREFRONTAL SQLN CONTINUES EWD.  THE STRONGEST MASS

FORCING AND SHEAR WILL LIFT N AWAY FROM REGION WITH TIME.  BUT

PRESENCE OF EXISTING SUSTAINED STORMS IN A SEASONABLY WARM...MOIST

AND HIGHLY SHEARED ENVIRONMENT SUGGEST A CONTINUED SVR RISK THROUGH

AT LEAST MID EVENING.



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 25040.





...CORFIDI

