Temps as of this typing are already in the lower single digits…this is easily going to be the coldest night of the season with most suburbs to the north and west of Boston going below zero. There is also another Windchill Advisory in effect for the interior as windchill values will approach 20 below zero at times. Tomorrow will be bright and sunny, but it won’t help out at all…temps will once again only climb into the mid teens.
On Friday, we will be following the progression of an Alberta Clipper system diving out of the Great Lakes. The energy will be transferred to the Mid-Atlantic Coast and a powerful Nor’easter will develop sliding south of Southern New England late Friday night and Saturday morning. How quickly this energy transfer and thus the strengthening of the Nor’easter takes place along with how close to the coast this formation occurs will ultimately determine how much snow we see. At the moment it appears that several fluffy inches (2-5″) will fall over SE MA and 2″ or less from just south of Boston up to the New Hampshire border. The snow will start late evening on Friday and end first thing on Saturday morning.