SWOMCD
SPC MCD 092247
MEZ000-MAZ000-NHZ000-CTZ000-VTZ000-NYZ000-NJZ000-100015-
MESOSCALE DISCUSSION 0786
NWS STORM PREDICTION CENTER NORMAN OK
0547 PM CDT SAT MAY 09 2009
AREAS AFFECTED...PARTS OF UPSTATE NEW YORK INTO NEW ENGLAND
CONCERNING...SEVERE THUNDERSTORM WATCH 283...
VALID 092247Z - 100015Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 283
CONTINUES.
SURFACE COLD POOL ON THE NORTHERN FLANK OF THE PRE-FRONTAL SQUALL
LINE WILL ADVANCE ACROSS SOUTHERN COASTAL MAINE SHORTLY...WITH
CONVECTION LIKELY WEAKENING AS COOLER MORE STABLE MARINE LAYER
BECOMES THE NEAR SURFACE INFLOW LAYER SOURCE. STORMS FED BY INFLOW
FROM A LINGERING HEATED MOIST BOUNDARY LAYER ACROSS THE LOWER HUDSON
VALLEY THRU WESTERN/CENTRAL MASSACHUSETTS WILL PROBABLY BE A BIT
SLOWER TO WEAKEN...BUT DIMINISH TRENDS COULD COMMENCE WITH THE ONSET
OF DIURNAL BOUNDARY LAYER COOLING AS EARLY AS 00-01Z.
..KERR.. 05/09/2009
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...GYX...BOX...OKX...ALY...PHI...BGM...
LAT...LON 41287464 41887458 42197376 42667270 43077202 43417144
43817112 44037065 43557055 42667116 42067232 41007391
41287464
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