[BNAWX] Severe Local Storm Watch and Watch Cancellation

[EMWIN Server]

WWUS20 KWNS 101921
SEL9
SPC WW 101921
NCZ000-SCZ000-TNZ000-VAZ000-WVZ000-CWZ000-110300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 269
NWS STORM PREDICTION CENTER NORMAN OK
320 PM EDT TUE MAY 10 2011

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

       MUCH OF WESTERN NORTH CAROLINA
       MUCH OF SOUTH CAROLINA
       MUCH OF EASTERN TENNESSEE
       PARTS OF WESTERN VIRGINIA
       PARTS OF SOUTHERN WEST VIRGINIA
       COASTAL WATERS

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 320 PM UNTIL
1100 PM EDT.

HAIL TO 3.5 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 85
STATUTE MILES EITHER SIDE OF A LINE FROM 40 MILES NORTHWEST OF
BRISTOL TENNESSEE TO 25 MILES EAST SOUTHEAST OF MYRTLE BEACH
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.

OTHER WATCH INFORMATION...CONTINUE...WW 268...

DISCUSSION...THUNDERSTORMS WILL INCREASE BOTH FROM THE W-NW ACROSS
THE APPALACHIANS AND NEARER THE COAST AS AIR MASS HAS BECOME
STRONGLY UNSTABLE THIS AFTERNOON.  WITH 40-50 KT OF DEEP LAYER
SHEAR...COUPLED WITH STEEP MID LEVEL LAPSE RATES...VERY LARGE HAIL
WILL ACCOMPANY MANY OF THE STRONGEST STORMS INCLUDING A FEW
SUPERCELLS.  DAMAGING WINDS WILL BE ASSOCIATED WITH UPSCALE
DEVELOPMENT LATER THIS AFTERNOON OF STORMS INTO SHORT LINE SEGMENTS
AND CLUSTERS AS THEY MOVE SEWD THRU THE WATCH.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 3.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 30025.


...HALES


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