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563 

WWUS20 KWNS 241904

SEL7

SPC WW 241904

VAZ000-WVZ000-250200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 107

NWS STORM PREDICTION CENTER NORMAN OK

305 PM EDT SAT MAR 24 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WESTERN VIRGINIA

       SOUTHEAST WEST VIRGINIA



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 305 PM UNTIL

1000 PM EDT.



HAIL TO 1.5 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 55

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 30 MILES NORTH

NORTHWEST OF BECKLEY WEST VIRGINIA TO 20 MILES EAST SOUTHEAST OF

STAUNTON VIRGINIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).



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...WW 105...WW 106...



DISCUSSION...VIGOROUS TSTM DEVELOPMENT WAS OCCURRING NEAR A SURFACE

LOW AND INVERTED SURFACE TROUGH MOVING ACROSS THE APPALACHIANS THIS

AFTERNOON. MOIST AIRMASS AND SURFACE HEATING HAVE CONTRIBUTED TO

MODEST AIRMASS DESTABILIZATION AS LARGE UPPER LOW MOVES EAST FROM

KY/OH. STORM COVERAGE SHOULD BE FURTHER ENHANCED BY ASCENT

WITHIN/BENEATH EXIT REGION OF STRONG CYCLONICALLY CURVED UPPER JET

NOW MOVING INTO THE REGION. SHEAR WILL BE SUFFICIENT FOR STORM

PERSISTENCE AND ORGANIZATION WITH LARGE HAIL AND SOME DAMAGING WIND

EVENTS POSSIBLE INTO THE EARLY EVENING HOURS.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1.5 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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