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000 

WWUS20 KWNS 060734

SEL5

SPC WW 060734

KYZ000-OHZ000-VAZ000-WVZ000-061100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 45

NWS STORM PREDICTION CENTER NORMAN OK

230 AM EST WED FEB 6 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EASTERN KENTUCKY

       SOUTHEASTERN OHIO

       EXTREME SOUTHWESTERN VIRGINIA

       CENTRAL AND WESTERN WEST VIRGINIA



EFFECTIVE THIS WEDNESDAY MORNING FROM 230 AM UNTIL 600 AM EST.



HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

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 45 MILES NORTH

NORTHEAST OF PARKERSBURG WEST VIRGINIA TO 85 MILES SOUTH OF

HUNTINGTON WEST VIRGINIA.  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 41...WW 42...WW 43...WW

44...



DISCUSSION...QUASI-LINEAR CONVECTIVE SYSTEM IS FCST TO MOVE RAPIDLY

EWD ACROSS WW AREA.  ALTHOUGH THIS ACTIVITY WILL BE MOVING INTO AIR

MASS THAT IS PROGRESSIVELY MORE STABLE/DRY WITH ERN EXTENT...FORCED

ASCENT OF NEUTRALLY TO MARGINALLY UNSTABLE AIR IN ITS INFLOW --

COMBINED WITH VERY STRONG DEEP-LAYER WINDS -- WILL MAINTAIN PRIMARY

THREAT OF DAMAGING WIND.



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

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS.

A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400. MEAN STORM MOTION

VECTOR 26050.





...EDWARDS

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