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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 502

NWS STORM PREDICTION CENTER NORMAN OK

335 PM EDT SAT JUN 18 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL NORTH CAROLINA

       SOUTHWESTERN AND SOUTH CENTRAL VIRGINIA



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 335 PM UNTIL

800 PM EDT.



HAIL TO 1.5 INCHES 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 70

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 15 MILES WEST OF

HICKORY NORTH CAROLINA TO 20 MILES NORTHEAST OF RALEIGH NORTH

CAROLINA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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.



OTHER WATCH INFORMATION...CONTINUE...WW 499...WW 500...WW 501...



DISCUSSION...SQUALL LINE WILL CONTINUE EWD THROUGH SRN VA AND CNTRL

NC WHERE THE ATMOSPHERE IS MODERATELY UNSTABLE. WEAK VERTICAL SHEAR

WILL SUPPORT MULTICELL STORMS. STEEPENING LOW LEVEL LAPSE RATES AND

LINEAR NATURE OF THE CONVECTION WILL CONTRIBUTE TO A THREAT OF

ISOLATED DAMAGING WIND AND POSSIBLY SOME HAIL AS ACTIVITY CONTINUES

EWD.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 27035.





...DIAL

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