The following forecast update is provided by Joe Kravitz:

The forecast for this weekend does not appear changed from yesterday. However, I would like to give an update on the potential storm for Tuesday and Wednesday. The scenario does not appear significantly changed from yesterday. The jet stream wave pattern does not appear amplified enough (too flat/zonally oriented) to generate a strong coastal storm. This will limit the upper-level divergence and thus will limit the upward motion/”lifting” required for heavy precipitation and/or strong surface low pressure generation. This orientation of the jet stream will also carry the storm quickly off the coast and out to our south and east. This will prevent the storm from hugging the coast and enabling us to fall within the zone of heavier precipitation. However, this orientation will also keep us in the colder air so that any precipitation that falls will be in the form of snow.

The models are beginning to converge, with the surface low over the southeast U.S. on Tuesday morning, moving to the southeast of Cape Cod and into the Canadian Maritime by Wednesday afternoon. The central pressure in the surface low should only be around 1004 mb as it moves by Cape Cod. That is quite high for a wintertime coastal storm. As with the coastal storm earlier this month, we will likely be on the northwestern fringe of the snow shield. Therefore, it is difficult to know whether we will fall outside the snow shield or within it. With the last storm, the edge of the precipitation shield cut right through the middle of Berkshire County from northeast to southwest. Right now it looks as if at least part of the county will get a relatively light snowfall with about 2-4″ most likely. Any snowfall will likely begin Tuesday afternoon or evening and end sometime after midnight early Wednesday morning. I will give another update tomorrow…………..