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Mesoscale Discussion 1141
NWS Storm Prediction Center Norman OK
0301 PM CDT Wed Jul 08 2020
Areas affected...Portions of southeast New York into Massachusetts
and far northern Connecticut
Concerning...Severe potential...Watch unlikely
Valid 082001Z - 082130Z
Probability of Watch Issuance...20 percent
SUMMARY...A couple damaging gusts or severe hail may accompany the
stronger storm clusters.
DISCUSSION...Mainly pulse-cellular convection, with occasional
multicellular clusters, have been ongoing across portions of central
New England over the past few hours. A multicellular cluster across
east-central NY is progressing towards MA, where a relatively
pristine ambient environment is in place. Several hours of daytime
heating and lack of convection (compared to areas farther south)
have resulted in surface temperatures reaching well into the 80s F,
with dewpoints over 70 F, and MLCAPE reaching 1500-2000 J/kg based
on latest Mesoanalysis. As such, storms are expected to progress
into or develop over MA/northern CT over the next few hours. While
overall tropospheric flow fields are weak compared to northern New
England, enough buoyancy is in place to support an isolated damaging
gust/hail threat with any dominant multicellular cluster.
..Squitieri/Guyer.. 07/08/2020
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...GYX...BOX...ALY...BGM...
LAT...LON 42617470 42777426 42787368 42777292 42747195 42757129
42687079 42567049 42217073 42047162 41987266 42067348
42247431 42617470
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