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Mesoscale Discussion 1323
NWS Storm Prediction Center Norman OK
0328 PM CDT Thu Jul 23 2020
Areas affected...a portion of the northeast states and southern New
England
Concerning...Severe Thunderstorm Watch 395...396...
Valid 232028Z - 232230Z
The severe weather threat for Severe Thunderstorm Watch 395, 396
continues.
SUMMARY...Thunderstorms will continue to pose a threat for isolated
damaging wind through the early evening, primarily from eastern
Pennsylvania through southeast New York and into southern New
England.
DISCUSSION...Widely scattered to scattered thunderstorms are
developing along and south of a cold front from southern New England
into southeast NY as well as northern and eastern PA. Mixed storm
modes including lines, small clusters, and discrete cells continue
to be observed within an environment characterized by 1500-2000 J/kg
MLCAPE and 30-35 kt effective bulk shear. The greatest severe threat
will persist from eastern PA into southeast NY and southern New
England. Severe threat appears more limited across the northern half
of WW 395 including southern NH and southeast ME. Persistent clouds
and pockets of convective overturning from earlier storms have
resulted in weaker instability in these areas, though a couple of
locally strong to severe gusts remain possible.
..Dial.. 07/23/2020
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...GYX...BOX...BTV...OKX...ALY...PHI...BGM...
LAT...LON 42017550 42567424 43397216 43197156 42477259 42177239
42437132 42377082 41787109 41037288 40637458 40827586
41417618 42017550
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