

915 

WWUS20 KWNS 221817

SEL4

SPC WW 221817

ALZ000-GAZ000-INZ000-KYZ000-NCZ000-TNZ000-VAZ000-230100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 324

NWS STORM PREDICTION CENTER NORMAN OK

220 PM EDT SUN MAY 22 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHERN ALABAMA

       NORTHERN GEORGIA

       SOUTHEAST INDIANA

       CENTRAL AND EASTERN KENTUCKY

       EXTREME WESTERN NORTH CAROLINA

       MIDDLE AND EASTERN TENNESSEE

       EXTREME SOUTHWEST VIRGINIA



EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 220 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 115

STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES WEST

SOUTHWEST OF ROME GEORGIA TO 35 MILES NORTH NORTHEAST OF

LEXINGTON KENTUCKY.  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 321...WW 322...WW 323...



DISCUSSION...SCATTERED THUNDERSTORMS HAVE BEGUN TO DEVELOP OVER A

LARGE AREA OF THE TN AND CENTRAL OH VALLEY.  STRONG DAYTIME HEATING

AND AN APPROACHING MID LEVEL SHORTWAVE WILL SUPPORT CONTINUED

DEVELOPMENT THROUGH THE AFTERNOON AND EARLY EVENING.  MODERATELY

STRONG MID LEVEL WINDS AND STEEP LAPSE RATES WILL PROMOTE A RISK OF

HAIL AND DAMAGING WINDS IN THE 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 500. MEAN STORM

MOTION VECTOR 26030.





...HART

