WATCHES: Severe Thunderstorm Watch Number 532

WWUS20 KWNS 242211
SEL2
SPC WW 242211
OHZ000-PAZ000-WVZ000-LEZ000-250500-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 532
NWS STORM PREDICTION CENTER NORMAN OK
610 PM EDT SAT JUL 24 2010

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

MUCH OF NORTHERN INTO CENTRAL OHIO
NORTHWEST PENNSYLVANIA
FAR NORTHERN WEST VIRGINIA
LAKE ERIE

EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 610 PM
UNTIL 100 AM EDT.

HAIL TO 1 INCH 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 45
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 25 MILES SOUTHWEST
OF FINDLAY OHIO TO 30 MILES EAST SOUTHEAST OF FRANKLIN
PENNSYLVANIA. 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 529...WW 530...WW 531...

DISCUSSION...TSTMS SHOULD CONTINUE TO INCREASE IN COVERAGE AND
INTENSITY ALONG WSW-ENE ORIENTED LOW-LEVEL BAROCLINIC ZONE WITH
ADDITIONAL TSTMS MOVING INTO THE REGION FROM THE WEST LATER TONIGHT.
AMBIENT AIR MASS IS HOT AND HUMID WITH MLCAPE OF 1500-2500 J/KG.
THIS INSTABILITY IN THE PRESENCE OF 35-40 KT OF DEEP WLY SHEAR WILL
BE SUPPORTIVE OF UPSCALE GROWTH INTO TSTM CLUSTERS OR BANDS WITH THE
THREAT FOR MAINLY DAMAGING WIND GUSTS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.
A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION
VECTOR 28030.

...MEAD

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