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000 

WWUS20 KWNS 220726

SEL3

SPC WW 220726

KYZ000-OHZ000-PAZ000-WVZ000-221400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 723

NWS STORM PREDICTION CENTER NORMAN OK

325 AM EDT TUE JUL 22 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHEAST KENTUCKY

       EASTERN OHIO

       SOUTHWEST PENNSYLVANIA

       CENTRAL AND NORTHERN WEST VIRGINIA



EFFECTIVE THIS TUESDAY MORNING FROM 325 AM UNTIL 1000 AM EDT.



HAIL TO 1 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 75

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 25 MILES EAST

SOUTHEAST OF MORGANTOWN WEST VIRGINIA TO 40 MILES WEST SOUTHWEST

OF ATHENS OHIO.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).



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 720...WW 721...WW 722...



DISCUSSION...LEADING EDGE OF CNTRL TO S CNTRL OH MCS HAS BECOME

ORIENTED MORE PERPENDICULAR TO DEEP WLY MEAN FLOW.  FLOW SHOULD

INCREASE LATER THIS MORNING AS UPSTREAM MID LVL SPEED MAX /PER VWP

DATA/ CONTINUES EWD.  WHILE SKIN LAYER STABLE LAYER WILL LIMIT

OVERALL SVR THREAT...POTENTIAL MAY DEVELOP FOR ISOLD DMGG WIND GUSTS

GIVEN STRENGTHENING WIND FIELD...CLOUD LYR INSTABILITY...AND UPSLOPE

COMPONENT TO FLOW.



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

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.

A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION

VECTOR 27040.





...CORFIDI

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