[BNAWX] Severe Local Storm Watch and Watch Cancellation

[EMWIN Server]

WWUS20 KWNS 181506
SEL0
SPC WW 181506
GAZ000-NCZ000-SCZ000-TNZ000-VAZ000-182200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 500
NWS STORM PREDICTION CENTER NORMAN OK
1105 AM EDT SAT JUN 18 2011

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

       PARTS OF NORTHERN GEORGIA
       WESTERN NORTH CAROLINA
       PARTS OF WESTERN SOUTH CAROLINA
       MUCH OF EASTERN TENNESSEE
       PARTS OF WESTERN VIRGINIA

EFFECTIVE THIS SATURDAY MORNING AND EVENING FROM 1105 AM UNTIL
600 PM EDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
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 25 MILES WEST
SOUTHWEST OF CHATTANOOGA TENNESSEE TO 50 MILES SOUTHEAST OF
BRISTOL TENNESSEE.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).

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...

DISCUSSION...WELL DEVELOPED SQUALL LINE EXPECTED TO INTENSIFY AS IT
MOVES ACROSS THE WATCH AREA FROM W-E.  AIR MASS IS HEATING RAPIDLY
IN ADVANCE OF THE LINE WITH MLCAPES AOA 2000 J/KG AND LITTLE
REMAINING CINH BY EARLY AFTERNOON. WITH 30-40KT OF MID LEVEL FLOW
AND STEEP LAPSE RATES BOWING SEGMENTS WITHIN THE SQUALL LINE WILL
ENHANCE WIND DAMAGE POTENTIAL.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
MOTION VECTOR 28030.


...HALES

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