WATCHES: Severe Thunderstorm Watch Number 251

WWUS20 KWNS 031737
SEL1
SPC WW 031737
DCZ000-DEZ000-MDZ000-NJZ000-PAZ000-VAZ000-WVZ000-CWZ000-040100-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 251
NWS STORM PREDICTION CENTER NORMAN OK
130 PM EDT THU JUN 3 2010

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

DISTRICT OF COLUMBIA
DELAWARE
MARYLAND
NEW JERSEY
SOUTHERN AND EASTERN PENNSYLVANIA
NORTHERN AND CENTRAL VIRGINIA
FAR EASTERN WEST VIRGINIA
COASTAL WATERS

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 130 PM UNTIL
900 PM 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 65
STATUTE MILES EITHER SIDE OF A LINE FROM 20 MILES NORTHWEST OF
STAUNTON VIRGINIA TO 10 MILES SOUTHEAST OF LAKEHURST NEW JERSEY.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU1).

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 250...

DISCUSSION...MCV WAS MOVING EWD INTO SWRN PA AND SHOULD RESULT IN
STORMS TO INCREASE IN COVERAGE ACROSS THE WATCH AREA THROUGH THE
AFTERNOON HOURS. A WARM AND HUMID AIR MASS...WITH MLCAPES RANGING
FROM 1500-2500 J/KG...COMBINED WITH 25-30 KT DEEP LAYER SHEAR WILL
BE SUPPORTIVE OF SCATTERED SEVERE MULTICELL STORMS WITH HAIL AND
WIND DAMAGE.

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 28025.

...IMY

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