[BNAWX] Severe Local Storm Watch and Watch Cancellation

[EMWIN Server]

WWUS20 KWNS 141809
SEL9
SPC WW 141809
GAZ000-NCZ000-SCZ000-TNZ000-VAZ000-WVZ000-150100-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 779
NWS STORM PREDICTION CENTER NORMAN OK
210 PM EDT SUN AUG 14 2011

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

       EXTREME NORTHEAST GEORGIA
       CENTRAL AND WESTERN NORTH CAROLINA
       UPSTATE SOUTH CAROLINA
       EXTREME EASTERN TENNESSEE
       SOUTHWEST VIRGINIA
       EXTREME SOUTHEAST WEST VIRGINIA

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 210 PM UNTIL 900
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 95
STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH OF
LYNCHBURG VIRGINIA TO 45 MILES SOUTHWEST OF GREENVILLE SOUTH
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...BROKEN BAND OF CONVECTION ALONG A COLD FRONT WILL
SPREAD EWD INTO AND ACROSS THE HIGH TERRAIN THIS AFTERNOON.
ADDITIONAL STORM DEVELOPMENT WILL BE SUPPORTED BY FURTHER SURFACE
HEATING NEAR AND E OF THE MOUNTAINS...AND AS A MIDLEVEL TROUGH
ROTATES ESEWD OVER THIS AREA.  THE COMBINATION OF MODERATE
INSTABILITY AND SOME INCREASE IN WLY MIDLEVEL FLOW WILL SUPPORT A
RISK OF DAMAGING WINDS AND MARGINALLY SEVERE HAIL THROUGH THIS
EVENING.

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 28030.


...THOMPSON


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