4/25/10: Forecast Update – Severe Thunderstorm Watch

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

DISTRICT OF COLUMBIA
PARTS OF DELAWARE
MUCH OF MARYLAND
SMALL PART OF SOUTHERN PENNSYLVANIA
PARTS OF NORTHERN VIRGINIA
SMALL PART OF EASTERN WEST VIRGINIA
COASTAL WATERS

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 440 PM UNTIL 1100 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 55
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 65 MILES WEST OF
MARTINSBURG WEST VIRGINIA TO 40 MILES EAST NORTHEAST OF SALISBURY
MARYLAND. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).

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.

CONDITIONS WILL BE FAVORABLE FOR CLUSTERS OF STRONG/SEVERE THUNDERSTORMS. ADDITIONALLY A SUPERCELL COULD FORM VICINITY OF SURFACE BOUNDARY ENHANCING BOTH THE LARGE HAIL POTENTIAL AND A BRIEF TORNADO THREAT.

…HALES