Mesoscale Discussion 0845
NWS Storm Prediction Center Norman OK
0347 PM CDT Thu Jun 03 2021
Areas affected...the Mid Atlantic region
Concerning...Severe Thunderstorm Watch 234...
Valid 032047Z - 032215Z
The severe weather threat for Severe Thunderstorm Watch 234
SUMMARY...Scattered strong/isolated severe storms continue from
southeastern Pennsylvania southwestward into central Virginia, where
locally damaging wind gusts remain the primary risk.
DISCUSSION...Latest radar loop shows a broken band of storms that
continues to evolve along and east of the higher terrain of Pennsylvania/Maryland/Virginia. Diurnal heating combined with the
relatively moist (generally mid to upper 60s dewpoints)
boundary-layer airmass across the area has pushed mixed-layer CAPE
values into the 1000 to 1500 J/kg range. Coupled with
increasing/weakly veering flow with height which is aiding updraft organization, isolated severe storms have evolved, a few exhibiting
supercell characteristics. While marginally severe hail is
possible, greater risk is for locally damaging wind gusts --
particularly as storms grow upscale/congeal. Meanwhile, an
isolated/brief tornado cannot be ruled out over the next 1-2 hours.
= = =
To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at email@example.com and ask to be removed from WX-STORM. ------------=_1622753291-51543-4499--