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000 

WWUS20 KWNS 101906

SEL2

SPC WW 101906

NCZ000-VAZ000-WVZ000-110200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 502

NWS STORM PREDICTION CENTER NORMAN OK

305 PM EDT TUE JUN 10 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHWESTERN NORTH CAROLINA

       SOUTHWESTERN VIRGINIA

       SOUTHEASTERN WEST VIRGINIA



EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 305 PM UNTIL

1000 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 75

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

NORTHWEST OF LYNCHBURG VIRGINIA TO 65 MILES SOUTH OF DUBLIN

VIRGINIA.  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...STORMS ARE EXPECTED TO CONTINUE DEVELOPING INITIALLY

OVER THE HIGHER TERRAIN AND SPREAD EWD INTO INSTABILITY AXIS AS THE

ATMOSPHERE DESTABILIZES. SWLY UNIDIRECTIONAL WIND PROFILES WITH BULK

SHEAR FROM 20 TO 30 KT WILL SUPPORT MOSTLY MULTICELL STORMS. STEEP

LOW LEVEL LAPSE RATES AND LARGE TEMPERATURE-DEWPOINT SPREADS WILL

SUPPORT A THREAT OF ISOLATED DAMAGING WIND. SOME HAIL WILL ALSO BE

POSSIBLE WITH THE STRONGER STORMS.



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 24035.





...DIAL/HART

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