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243 

WWUS20 KWNS 121909

SEL3

SPC WW 121909

MDZ000-VAZ000-CWZ000-130000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 303

NWS STORM PREDICTION CENTER NORMAN OK

310 PM EDT SAT JUN 12 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHERN MARYLAND

       EASTERN VIRGINIA

       COASTAL WATERS



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 310 PM UNTIL

800 PM EDT.



HAIL TO 1 INCH 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 EAST AND WEST OF A LINE FROM 70 MILES NORTHEAST OF

CHARLOTTESVILLE VIRGINIA TO 40 MILES EAST OF SOUTH HILL VIRGINIA.

 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU3).



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 301...WW 302...



DISCUSSION...LINE OF STRONG TO LOCALLY SEVERE STORMS CONTINUES TO

MOVE EAST OFF THE HIGHER PIEDMONT AND INTO HOT AND UNSTABLE AIRMASS

ACROSS ERN VA AND SOUTH MD THIS AFTERNOON. COLD POOL AND ADDITIONAL

LIFT FROM OH/WV SHORT WAVE TROUGH SHOULD SUSTAIN THE THREAT FOR

DAMAGING WIND GUSTS WITH THE STRONGER CELLS WITHIN THE CONVECTIVE

LINE OVER THE NEXT FEW HOURS.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.

A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION

VECTOR 26035.





...CARBIN

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