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MESOSCALE DISCUSSION 0940
NWS STORM PREDICTION CENTER NORMAN OK
0334 PM CDT WED JUN 03 2009
AREAS AFFECTED...VA
CONCERNING...SEVERE THUNDERSTORM WATCH 325...
VALID 032034Z - 032200Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 325
CONTINUES.
SCATTERED VIGOROUS THUNDERSTORMS ARE ONGOING ALONG AND TO THE LEE OF
THE CENTRAL APPALACHIANS...THROUGH MUCH OF VIRGINIA INTO THE
DELMARVA AREA...WITHIN A MODERATELY UNSTABLE AIR MASS TO THE SOUTH
OF A STALLED SURFACE FRONT. NEW CONVECTIVE DEVELOPMENT APPEARS TO
BE TAKING PLACE ACROSS NORTH CENTRAL VIRGINIA...NEAR OR JUST
NORTHEAST OF A DEEPENING LOW CENTER. THIS FEATURE MAY BE SUPPORTED
BY AN APPARENT AREA OF ENHANCED LARGE-SCALE FORCING FOR UPWARD
VERTICAL MOTION...WHICH IS EXPECTED TO SPREAD EAST NORTHEAST OF THE
MOUNTAINS OF WEST VIRGINIA TOWARD THE WASHINGTON D.C. AREA BETWEEN
NOW AND 00Z. AND...THIS SEEMS TO OFFER THE MOST LIKELY FOCUS FOR
ANY POSSIBLE GROWING/ORGANIZING STORM CLUSTER LATE THIS AFTERNOON
AND EARLY EVENING...WITHIN MODEST WESTERLY MID-LEVEL FLOW ON THE
SOUTHERN FRINGE OF THE STRONGER WESTERLIES.
..KERR.. 06/03/2009
ATTN...WFO...PHI...AKQ...LWX...RNK...PBZ...RLX...MRX...
LAT...LON 38678190 39687496 37807499 36808190 38678190
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