

000 

WWUS20 KWNS 221920

SEL7

SPC WW 221920

KYZ000-NCZ000-TNZ000-VAZ000-WVZ000-230300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 727

NWS STORM PREDICTION CENTER NORMAN OK

320 PM EDT TUE JUL 22 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF EASTERN KENTUCKY

       SMALL PART OF WESTERN NORTH CAROLINA

       PARTS OF EASTERN TENNESSEE

       WESTERN VIRGINIA

       PARTS OF SOUTHERN WEST VIRGINIA



EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 320 PM UNTIL

1100 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 65

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES EAST

SOUTHEAST OF BECKLEY WEST VIRGINIA TO 45 MILES SOUTH SOUTHWEST OF

LONDON KENTUCKY.  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 724...WW 725...WW 726...



DISCUSSION...THUNDERSTORMS INTENSIFYING AND DEVELOPING COLD POOLS IN

A VERY WARM AND UNSTABLE AIR MASS.  DAMAGING WINDS WILL BE PRIMARY

THREAT AS STORMS PROPAGATE EWD IN 25-30KT OF DEEP LAYER SHEAR.



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 550. MEAN STORM

MOTION VECTOR 25025.





...HALES

