WATCHES: Severe Thunderstorm Watch Number 392

WWUS20 KWNS 131724
SEL2
SPC WW 131724
DCZ000-MDZ000-OHZ000-PAZ000-VAZ000-WVZ000-CWZ000-140100-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 392
NWS STORM PREDICTION CENTER NORMAN OK
125 PM EDT WED JUN 13 2007

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

DISTRICT OF COLUMBIA
MUCH OF MARYLAND
PARTS OF EASTERN OHIO
MUCH OF PENNSYLVANIA
PARTS OF NORTHERN VIRGINIA
PARTS OF NORTH AND EAST WEST VIRGINIA
COASTAL WATERS

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 125 PM UNTIL
900 PM EDT.

HAIL TO 2 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 125
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 10 MILES WEST
NORTHWEST OF WHEELING WEST VIRGINIA TO 60 MILES EAST OF
HARRISBURG 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 391...

DISCUSSION...THUNDERSTORMS WILL DEVELOP OVER MUCH OF WATCH AREA
NEXT FEW HOURS. 20-25 KTS OF SHEAR AND COOL MID LEVEL LAPSE RATES
SUPPORT LARGE HAIL. STORMS WILL EVOLVE INTO CLUSTERS WITH INCREASING
THREAT OF WIND DAMAGE DURING THE AFTERNOON.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM
MOTION VECTOR 02020.

..HALES

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