WATCHES: Severe Thunderstorm Watch Number 264

WWUS20 KWNS 051811
SEL4
SPC WW 051811
INZ000-KYZ000-MDZ000-OHZ000-PAZ000-WVZ000-060100-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 264
NWS STORM PREDICTION CENTER NORMAN OK
210 PM EDT SAT JUN 5 2010

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

FAR EASTERN INDIANA
NORTHERN KENTUCKY
FAR WESTERN MARYLAND PANHANDLE
MUCH OF OHIO
WESTERN PENNSYLVANIA
NORTHERN WEST VIRGINIA

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 210 PM UNTIL
900 PM EDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70
STATUTE MILES EITHER SIDE OF A LINE FROM 40 MILES NORTHWEST OF
CINCINNATI OHIO TO 5 MILES NORTH OF LATROBE PENNSYLVANIA. 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 262...WW 263...

DISCUSSION...LINE OF STORMS HAS RECENTLY DEVELOPED IN ERN
INDIANA...AHEAD OF AN MCV. THIS LINE IS EXPECTED TO INTENSIFY AND
ACCELERATE EWD WITH AN INCREASING DAMAGING WIND THREAT. OTHER STORMS
WERE SCATTERED AHEAD OF THE LINE AND WILL ALSO LIKELY INTENSIFY INTO
SUPERCELLS AS THEY SHIFT EWD. THE GREATEST SEVERE THREAT WITH THESE
STORMS WILL BE LARGE HAIL.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 29030.

...IMY

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