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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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