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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 49

NWS STORM PREDICTION CENTER NORMAN OK

125 PM EST THU MAR 10 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       LARGE PART OF CENTRAL AND EASTERN NORTH CAROLINA

       A LARGE PART OF CENTRAL AND SOUTHERN VIRGINIA



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 125 PM UNTIL

800 PM EST.



HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65

STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH OF

CHARLOTTESVILLE VIRGINIA TO 10 MILES SOUTH SOUTHWEST OF

FAYETTEVILLE NORTH CAROLINA.  FOR A COMPLETE DEPICTION OF THE

WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



DISCUSSION...AS STRONG UPPER TROUGH APPROACHES AREA FROM THE

SW...AIR MASS HAS BECOME SUFFICIENTLY UNSTABLE TO SUPPORT

THUNDERSTORMS.  WITH 50-60KT BRN SHEAR...THUNDERSTORMS WILL DEVELOP

INTO SHORT LINE SEGMENTS/BOWS AS THEY MOVE RAPIDLY NEWD.  PRIMARY

THREAT WILL BE DAMAGING WINDS...HOWEVER A BRIEF TORNADO OR TWO IS

POSSIBLE GIVEN THE STRONG LOW LEVEL SHEAR.



AVIATION...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 22035.





...HALES

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