WATCHES: Severe Thunderstorm Watch Number 790

WWUS20 KWNS 020218
SEL0
SPC WW 020218
INZ000-KYZ000-OHZ000-020900-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 790
NWS STORM PREDICTION CENTER NORMAN OK
1015 PM EDT FRI AUG 1 2008

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

CENTRAL AND SOUTHERN INDIANA
NORTHERN KENTUCKY
SOUTHWEST AND CENTRAL OHIO

EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 1015 PM
UNTIL 500 AM EDT.

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 55
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES NORTH
NORTHWEST OF TERRE HAUTE INDIANA TO 45 MILES SOUTH SOUTHEAST OF
COLUMBUS OHIO. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).

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 788...WW 789...

DISCUSSION...SCTD STRONG TO SVR STORMS POSSIBLE THROUGH EARLY
SATURDAY IN WW AREA AS UVV/DEEP SHEAR SLOWLY INCREASE AHEAD OF
AMPLIFYING LARGER SCALE TROUGH. LOW LVL CONVERGENCE WILL REMAIN
WEAK...AND MAY LIMIT UPSCALE DEVELOPMENT INTO A LARGE MCS. BUT
DEGREE OF INSTABILITY /PER 00Z RAOBS AND FCST SOUNDINGS/ AND
MODERATE...VEERING WIND FIELD SUGGEST POTENTIAL FOR SMALLER SCALE
BOWING SEGMENTS WITH SVR WIND/MARGINALLY SVR HAIL WITH ANY SUSTAINED
STORMS THAT DO FORM.

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 500. MEAN STORM
MOTION VECTOR 30025.

...CORFIDI

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