DISCUSSION...Convection is gradually increasing in coverage and
intensity across parts of central PA into central/eastern NY
along/east of a weak surface trough and zone of differential
heating. Some of these storms have a history of producing both
marginally severe hail and damaging wind gusts across central NY.
Recent surface observations and area VWPs show low-level winds are
generally veered to west-southwesterly, which is limiting low-level
convergence. Still, current expectations are for the ongoing
convection to gradually spread eastward across parts of northeastern
PA into far northern NJ, southern NY, and CT/RI/MA through the
remainder of the afternoon. Around 30-40 kt of deep-layer shear and
1000-1500 J/kg of MLCAPE should be sufficient for an organized
severe threat. The primary risk should be scattered severe/damaging
wind gusts as storms will probably tend to form into small bowing
clusters with eastward extent. But, occasional marginally severe
hail may also occur with any convection that can remain
semi-discrete. A downstream Severe Thunderstorm Watch will likely be
needed.