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Mesoscale Discussion 1046 |
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MESOSCALE DISCUSSION 1046
NWS STORM PREDICTION CENTER NORMAN OK
0458 AM CDT WED JUN 01 2011
AREAS AFFECTED...ERN NY/WRN VT/WRN MA
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 010958Z - 011200Z
BAND OF THUNDERSTORMS WHICH HAS DEVELOPED OVER THE PAST 1-2 HOURS
MAY PRODUCE MARGINAL HAIL AND POSSIBLY AN ISOLATED WIND
GUST...BEFORE AN EXPECTED WEAKENING AS THEY CROSS THE HUDSON AND
CHAMPLAIN VALLEYS.
WARM ADVECTION IN CONJUNCTION WITH A WLY LOW-LEVEL JET HAS SUPPORTED
DEVELOPMENT OF AN EWD-MOVING BAND OF STORMS OVER ERN NY. THE STORMS
ARE UTILIZING AN AXIS OF ELEVATED INSTABILITY -- GREATEST TO THE W
ACROSS ERN NY AND THEN DECREASING WITH EWD EXTENT INTO WRN NEW
ENGLAND.
MID-LEVEL FLOW IS RELATIVELY WEAK ACROSS THIS AREA -- AND THUS
DEEP-LAYER SHEAR SOMEWHAT LACKING. HAVING SAID THAT...THE DEGREE OF
INSTABILITY WILL CONTINUE TO FUEL STORMS -- LOCALLY VIGOROUS ENOUGH
TO PRODUCE MARGINAL SEVERE WEATHER. HOWEVER...AS THE STORMS
CONTINUE EWD INTO A REGION OF WHAT APPEARS TO BE WEAKER ELEVATED
INSTABILITY...STORMS -- AND ANY ASSOCIATED SEVERE POTENTIAL --
SHOULD SLOWLY DIMINISH.
..GOSS.. 06/01/2011
ATTN...WFO...BOX...BTV...ALY...BGM...
LAT...LON 44187428 44847354 44867258 44137245 42627290 42037377
41707569 42057620 42887527 44187428
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