

000 

WWUS20 KWNS 220409

SEL2

SPC WW 220409

INZ000-KYZ000-OHZ000-221000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 722

NWS STORM PREDICTION CENTER NORMAN OK

1205 AM EDT TUE JUL 22 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHERN AND EAST CENTRAL INDIANA

       NORTHERN KENTUCKY

       SOUTHWEST OHIO



EFFECTIVE THIS TUESDAY MORNING FROM 1205 AM UNTIL 600 AM EDT.



HAIL TO 2.5 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 70

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 10 MILES WEST OF

BLOOMINGTON INDIANA TO 85 MILES EAST SOUTHEAST OF CINCINNATI

OHIO.  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 719...WW 720...WW 721...



DISCUSSION...AIR MASS REMAINS MODERATE TO STRONGLY UNSTABLE ACROSS

THE AREA LATE THIS EVENING...AS 00Z SOUNDINGS INDICATE SEASONABLY

STEEP MID LEVEL LAPSE RATES AND ABUNDANT LOW LEVEL MOISTURE.

THUNDERSTORMS WILL INCREASE AND SPREAD FROM WNW TO ESE ACROSS THE

REGION WITHIN DEEP LAYER SHEAR ON THE ORDER OF 30-40 KT.  THIS

SHOULD SUSTAIN ORGANIZED MCS/POSSIBLE BOW ECHO...ALONG WITH

POTENTIAL FOR ISOLATED SUPERCELLS.  LARGE HAIL AND DAMAGING WINDS

CAN BE EXPECTED WITH THESE STORMS.



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

TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

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

MOTION VECTOR 31035.





...EVANS

