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Mesoscale Discussion 754 |
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Mesoscale Discussion 0754
NWS Storm Prediction Center Norman OK
0534 PM CDT Wed May 26 2021
Areas affected...Portions of Mid-Atlantic
Concerning...Severe Thunderstorm Watch 205...206...
Valid 262234Z - 270030Z
The severe weather threat for Severe Thunderstorm Watch 205, 206
continues.
SUMMARY...Damaging wind gusts remain a concern with convection
nearing the Atlantic Coast. A few isolated storms near the Blue
Ridge and along the cold front may pose a low-end threat for strong
winds.
DISCUSSION...The most intense and organized convection near the
Atlantic Coast will impact portions or northern and central New
Jersey into western Long Island. Surface observations show much
cooler air in central and eastern Long Island. Parts of this
convective line will likely move offshore within the next hour. With
a narrow corridor of temperatures into the mid/upper 80s F, damaging
gusts will be possible in the short term. In Maryland and northern
Virginia, convection has been more of a broken line. A similar
hot/unstable airmass is ahead of a cluster now approaching the
Delmarva. Damaging gusts will be possible here for the next 1-1.5
hours. A small cluster has recently developed along the Blue Ridge
and is moving east. This may pose a threat for damaging gusts as
well, but stable air awaits this activity in the wake of early
convection and continued loss of boundary-layer heating. This threat
will be likely short-lived.
Farther north and west along the synoptic cold front, lingering
convection may persist this evening. With the boundary layer
stabilizing, isolated strong gusts would be the main threat before
this activity diminishes.
..Wendt.. 05/26/2021
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...OKX...PHI...AKQ...CTP...LWX...
LAT...LON 39357857 39547805 39637674 39877618 39897605 40607522
41087479 41177428 40947381 40097397 39357445 38777493
38587553 38517645 38497705 38487761 38637821 38907860
39357857
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