Temperatures have started to fall across the region, and will be accelerated as the cold front pushes through. Currently low pressure is located just northwest of Glens Falls, NY with the front draped across eastern New York. Temperatures have fallen into the upper 30's across western New York state and rain has started to mix with and change to snow in some locations.
The NAM continues to indicate H850-1000 thicknesses under 1310m by 2am EDT, which would support frozen precipitation. However most of the other model guidence is not as cold. In addition, its possible that the majority of precipitation will be over by midnight, before cold air has a chance to move in. Scattered showers are still likely through Wednesday morning, but precipitation rates will be low which limits the chances of snow making it to the surface.
At this time, I still anticipate a period of wet snow mixing in across elevations above 1000ft in Cheshire county and adjacent northern MA between 2am and 8am, but with no accumulation. Below 1000ft, only if steady precipitation can hang around through 8am, will snow be possible.
|posted by Sam Lillo @ 10/21/2008 04:30:00 PM
