WATCHES: Severe Thunderstorm Watch Number 105

WWUS20 KWNS 241646
SEL5
SPC WW 241646
NCZ000-VAZ000-250000-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 105
NWS STORM PREDICTION CENTER NORMAN OK
1245 PM EDT SAT MAR 24 2012

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

FOOTHILLS AND PIEDMONT OF NORTH CAROLINA
SOUTHWEST VIRGINIA

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 1245 PM UNTIL
800 PM EDT.

HAIL TO 2 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 70
STATUTE MILES EAST AND WEST OF A LINE FROM 10 MILES EAST
NORTHEAST OF ROANOKE VIRGINIA TO 10 MILES EAST SOUTHEAST OF
CHARLOTTE NORTH CAROLINA. FOR A COMPLETE DEPICTION OF THE WATCH
SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).

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 104...

DISCUSSION...TSTMS ARE EXPECTED TO INCREASE IN COVERAGE AND
INTENSITY THROUGH THE AFTERNOON AS LARGE SCALE HEIGHT FALLS
OVERSPREAD WARMING AND INCREASINGLY UNSTABLE AIRMASS EAST OF THE
APPALACHIANS. LIFT WILL BE FOCUSED ALONG A COLD FRONT MOVING EAST
ACROSS THE INSTABILITY AXIS AND DEEP-LAYER VERTICAL SHEAR AROUND
40KT WILL SUPPORT ORGANIZED STORMS IN THE FORM OF SUPERCELLS AND
LINE SEGMENTS CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM
MOTION VECTOR 25030.

...CARBIN

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