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WWUS20 KWNS 031737

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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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