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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 94

NWS STORM PREDICTION CENTER NORMAN OK

305 PM EDT MON APR 4 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EASTERN KENTUCKY

       EXTREME WESTERN NORTH CAROLINA

       SOUTHEAST OHIO

       EASTERN TENNESSEE

       EXTREME WESTERN VIRGINIA

       WESTERN WEST VIRGINIA



EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 305 PM UNTIL 900

PM EDT.



HAIL TO 0.5 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 50

STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES NORTHWEST OF

PARKERSBURG WEST VIRGINIA TO 65 MILES SOUTH OF CROSSVILLE

TENNESSEE.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).



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 89...WW 90...WW 91...WW

92...WW 93...



DISCUSSION...WELL-DEVELOPED SQUALL LINE WILL CONTINUE TO SURGE EWD

THROUGH THE AFTERNOON/EVENING WITH A CONTINUED RISK FOR DAMAGING

WINDS.  GRADUAL BOUNDARY LAYER MOISTENING AND SOME CLOUD BREAKS WILL

SUPPORT WEAK SURFACE-BASED INSTABILITY...WHILE STRONG LOW-MIDLEVEL

FLOW WILL SUPPORT DAMAGING WINDS WITH MOMENTUM TRANSFER TO THE

SURFACE IN BOWING SEGMENTS.



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

TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM

MOTION VECTOR 26055.





...THOMPSON

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