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WWUS20 KWNS 281810

SEL2

SPC WW 281810

INZ000-KYZ000-OHZ000-VAZ000-WVZ000-290100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 112

NWS STORM PREDICTION CENTER NORMAN OK

210 PM EDT WED MAR 28 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EXTREME SOUTHERN INDIANA

       CENTRAL AND EASTERN KENTUCKY

       EXTREME SOUTHERN OHIO

       WESTERN VIRGINIA

       WEST VIRGINIA



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 210 PM UNTIL

900 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 55

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES NORTH

NORTHWEST OF BOWLING GREEN KENTUCKY TO 35 MILES NORTH NORTHEAST

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

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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...STORMS ARE EXPECTED TO CONTINUE DEVELOPING AND

INTENSIFY THIS AFTERNOON IN A PRE-FRONTAL CONVECTIVE BAND OVER WV

INTO SRN OH...WITH ADDITIONAL WWD DEVELOPMENT INTO SRN INDIANA WHERE

A COLD FRONT IS MOVING SEWD INTO A LOW LEVEL INSTABILITY AXIS.

CONVECTION HAS PRIMARILY BEEN ELEVATED INTO THE EARLY

AFTERNOON...BUT CONTINUED HEATING AND DEVELOPMENT OF A WELL-MIXED

BOUNDARY LAYER WILL RESULT IN STORMS BECOMING SURFACE-BASED WITH AN

INCREASING THREAT FOR SEVERE STORMS.  VAD PROFILES SHOW STRONG WINDS

ABOVE THE GROUND IN THE LOWEST 2-3 KM WHICH WILL ENHANCE WIND DAMAGE

POTENTIAL...AND STEEP LAPSE RATES WILL ALSO PROMOTE LARGE HAIL WITH

STRONGER CELLS.



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 28045.





...WEISS

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