

548 

WWUS20 KWNS 032101

SEL2

SPC WW 032101

KYZ000-040400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 722

NWS STORM PREDICTION CENTER NORMAN OK

400 PM CDT WED AUG 3 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WESTERN AND CENTRAL KENTUCKY



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 400 PM UNTIL

1100 PM CDT.



HAIL TO 1.5 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 50

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTH

SOUTHEAST OF LEXINGTON KENTUCKY TO 40 MILES SOUTHWEST OF

OWENSBORO KENTUCKY.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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 721...



DISCUSSION...TSTMS ARE EXPECTED TO INCREASE IN COVERAGE AND

INTENSITY THIS AFTERNOON/EVENING AS DEEP-LAYER ASCENT IS ENHANCED

ALONG COLD FRONT BY WEAK MIDLEVEL IMPULSE APPROACHING FROM IL/IND.

AMBIENT WARM SECTOR AIR MASS IS VERY HOT AND MOIST WITH MLCAPE

VALUES UPWARDS OF 5000-6000 J/KG.  WHEN COUPLED WITH 30-35 KT NWLY

FLOW SAMPLED ABOVE 2-3 KM AGL BY LOUISVILLE VWP...ENVIRONMENT WILL

SUPPORT SUPERCELL AND BOWING STRUCTURES WITH ATTENDANT RISKS FOR

DAMAGING WINDS AND LARGE HAIL.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. MEAN STORM

MOTION VECTOR 34030.





...MEAD

