lot of derecho mentions on twitter this AM for Wisconsin and points southeast.
for us:
...Mid-Atlantic Vicinity...
Modest deep-layer northwesterly flow will be in place today as an
upper trough pivots eastward off the Atlantic coast. A very moist
airmass is in place with dewpoints generally from the upper 60s to
mid 70s F. Strong heating will result in strong destabilization
during the afternoon. Nebulous large-scale ascent is forecast, and
should limit coverage, with isolated thunderstorm development
expected during the afternoon/evening. While low-level winds will be
light, southerly flow beneath northwesterly winds aloft will result
in moderate effective shear magnitudes, aiding in at least briefly
organized cells/clusters. Steep low-level lapse rates and high PW
values will support isolated damaging gusts through early evening.