WATCHES: Severe Thunderstorm Watch Number 229

WWUS20 KWNS 281757
SEL9
SPC WW 281757
ALZ000-GAZ000-KYZ000-NCZ000-SCZ000-TNZ000-VAZ000-WVZ000-290100-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 229
NWS STORM PREDICTION CENTER NORMAN OK
155 PM EDT FRI MAY 28 2010

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

NORTHEASTERN ALABAMA
NORTHWESTERN GEORGIA
SOUTHEASTERN KENTUCKY
WESTERN NORTH CAROLINA
WESTERN SOUTH CAROLINA
MIDDLE AND EASTERN TENNESSEE
SOUTHWESTERN VIRGINIA
FAR SOUTHERN WEST VIRGINIA

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 155 PM UNTIL 900
PM EDT.

HAIL TO 1 INCH 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 120
STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES WEST
NORTHWEST OF BLUEFIELD WEST VIRGINIA TO 30 MILES SOUTHEAST OF
GADSDEN ALABAMA. 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...DESPITE WEAK SHEAR...STRONG INSTABILITY...VERY MOIST
BOUNDARY LAYER...AND PRESENCE OF UPPER LOW DROPPING SOUTHWARD
THROUGH THE TN VALLEY WILL RESULT IN NUMEROUS THUNDERSTORMS
THROUGHOUT THE AFTERNOON. ALTHOUGH THE SEVERE THREAT WILL NOT BE
LONG LIVED WITHIN INDIVIDUALS STORMS...ENVIRONMENT APPEARS FAVORABLE
FOR SCATTERED STORMS TO PRODUCE DAMAGING DOWNBURSTS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.
A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION
VECTOR 03010.

...IMY

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