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URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 954

NWS STORM PREDICTION CENTER NORMAN OK

315 PM EST THU DEC 11 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EXTREME NORTHEAST NORTH CAROLINA

       SOUTHEAST VIRGINIA

       COASTAL WATERS



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 315 PM UNTIL

900 PM EST.



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 25 STATUTE

MILES EITHER SIDE OF A LINE FROM 100 MILES WEST OF NORFOLK

VIRGINIA TO 55 MILES EAST OF NORFOLK VIRGINIA.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU4).



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 952...WW 953...



DISCUSSION...PRONOUNCED WARM FRONT STRETCHED ALONG A LINE FROM S OF

WAL TO AVC. AIR MASS SOUTH OF THE FRONT HAS BECOME RELATIVELY WARM

AND HUMID WITH MLCAPES UP TO 500 J/KG. ALTHOUGH INSTABILITY IS

WEAK... LOW/DEEP LAYER SHEAR IS FAVORABLE FOR SUPERCELLS AND

TORNADOES. STORM COVERAGE IS EXPECTED TO INCREASE INTO THE EARLY

EVENING HOURS AS SURFACE LOW AND UPPER LEVEL TROUGH SHIFT EWD INTO

THE REGION.



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 19040.





...IMY

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