3/1/12 March blows in... Meteorological Spring Arrives Snow details

As expected yesterday, snow fell across much of the Boston area, but enough warm air moved in to change the snow over to a mix and by this morning, most of the snow that has fallen in the Boston area has melted.  

Areas away from the city, north and west will still be cold enough for snow to fall and not melt as easily.

A rain snow line (RED) will set up today. Any precipitation NORTH and WEST of  line that does fall today will likely be in the form of SNOW. Some snows in this area could be heavy.  This line gradually pushes south and by 8 PM tonight the line (BLUE) reaches Boston. At that time however, the precipitation will be light and only up to an additional coating or inch is likely.

The weather map setup for the remainder of the day shows a new area of Low Pressure forming south of Nantucket. A dry slot (A punch of dry air into the storm) will cut of rain/snow for much of the early afternoon. 

As this low begins to strengthen... it will set up an area of enhanced precipitation and along with some strong winds. This flow will push into far northeast MA and southern NH by mid day and will help drop several more inches of snow along the NH/MA border inland from 495.

The old Low will push through later tonight and usher in some colder air and change any left over precipitation to snow, but it will be light in nature. Up to an inch could fall as this low moves through later tonight in Boston and the South coast.

Total Snowfall map as of 8 AM Thursday. (Some snow has melted)

After the passage of this storm, some colder air will be in place for Friday, but will quickly be displaced as yet another storm deepens over the Great Lakes and forces warmer air into New England.

NOTE: If you are in an area where heavy snow falls, the precipitation on Saturday could be a freezing rain event due to the cold air at the surface esp in NH and Maine.