Spc is pretty gung-ho all things considered.
...Northeast/Mid Atlantic...
A longwave upper trough will deepen over the Northeast and Mid
Atlantic on Sunday, as individual vorticity maxima rotate through
the mean trough position. A surface low should deepen and move
northeastward across southern Quebec during the afternoon, as a
trailing cold front sweeps through the Northeast/Mid Atlantic during
the afternoon and evening. While cloud cover from weakening
overnight convection may tend to limit insolation over portions of
the area, sufficient heating and low-level moisture (dewpoints in
the mid 50s to lower 60s F) should result in the development of
moderate buoyancy in advance of the cold front by afternoon.
Effective shear of 35-45 kt will support some organized structures;
linear modes are most likely given that the primary focusing
mechanism will be along the cold front, though any pre-frontal
development will have some supercell potential. Damaging wind will
likely be the primary threat, though any discrete storms will also
have some potential for hail and perhaps a tornado.