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539 

WWUS20 KWNS 271814

SEL1

SPC WW 271814

NCZ000-CWZ000-280000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 901

NWS STORM PREDICTION CENTER NORMAN OK

115 PM EST TUE DEC 27 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EASTERN NORTH CAROLINA

       COASTAL WATERS



EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 115 PM UNTIL

700 PM EST.



TORNADOES...HAIL TO 0.5 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 60 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 35 MILES EAST NORTHEAST OF

CAPE HATTERAS NORTH CAROLINA TO 10 MILES SOUTH SOUTHWEST OF

GOLDSBORO NORTH CAROLINA.  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.



DISCUSSION...SCATTERED SHOWERS AND THUNDERSTORMS WILL AFFECT EASTERN

NC THROUGH THE AFTERNOON AND EARLY EVENING...IN ASSOCIATION WITH AN

INTENSE UPPER TROUGH MOVING ACROSS TN/WV/VA.  EXTREMELY STRONG LOW

LEVEL WIND FIELDS /3KM SRH VALUES EXCEEDING 1000 M2/S2/ COUPLED WITH

SURFACE DEWPOINTS IN THE UPPER 50S/LOWER 60S MAY BE SUFFICIENT FOR

ISOLATED SUPERCELL/BOW ECHO DEVELOPMENT.  ANY SUSTAINED UPDRAFT MAY

ATTAIN ROTATION AND POSE A THREAT OF LOCALLY DAMAGING WINDS OR

TORNADOES.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

400. MEAN STORM MOTION VECTOR 24050.





...HART

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