saw this pop up live on Radarscope!!!
SUMMARY...Heavy snow bands will spread/develop southeast across
upstate NY toward southern New England over the next few hours. Snow
rates of 1-1.5"/hr are expected.
DISCUSSION...Low-amplitude short-wave trough is progressing
southeast across western NY/PA early this evening. Latest
water-vapor imagery depicts a notable midlevel vort max southwest of
Syracuse, and this is reflected well in radar data. Multiple heavy
snow bands have developed ahead of this vort max, strongly
influenced by low-level warm advection, extending across upstate NY
into the lower Hudson Valley. Boundary layer moistening supports
this with dew points now rising into the mid teens (F) where snow
rates are increasing. Over the next few hours snow rates are
expected to increase downstream across western CT and Long Island,
largely in response to this well-defined short wave digging toward
the northern Middle Atlantic. Snow rates of 1-1.5"/hr can be
expected prior to the short wave passage.