Hello everyone and a happy Monday to you all. After a rather warm and wet Monday & Tuesday a few snow flakes are possible overnight Tuesday into Wednesday morning.  I’m not expecting anything major in terms of snow accumulations, just enough to require a snow brush and maybe a quick shovel before heading to work Wednesday.

A low pressure system over the Great Lakes is driving Gulf of Mexico moisture up the east coast.  Remember that surface winds around a low pressure flow counter-clockwise. Meaning that on the east-southeast side of the low pressure system, winds are out of the south/southwest. Which ushers in moisture and warmer temperatures setting the stage for today & tomorrow’s rain.

Monday PM PWAT – Pivotal Weather, LLC

Eventually, the storm center and associated cold front push through the region allowing colder temperatures to move in from the northwest.

Tue AM -> Wed AM Temperatures – Pivotal Weather, LLC

Just as colder temperatures overtake the region, a weak system riding along the frontal boundary will trigger a round of light precipitation over Southern New England.  Temperatures are expected to be cold enough to support snow.

Precipitation Type: Tue 7p -> Wed 4p – Pivotal Weather, LLC

Each frame in the loop above is 3 hours long. While it appears to snow for 6-9 hours in most locations, snowfall amounts won’t be too high.  Mainly enough to whiten everything up again.

Before I get to my snowfall map I wanted to point out the Boston National Weather Service office’s (located in Norton, MA) current snowfall map.

Boston NWS Snowfall Forecast

When you compare it my map below, you will notice that the NWS is much more “bullish” than I am when it comes to snowfall accumulations. In my opinion, the NWS map represents the “perfect” scenario where everything break right from a snowfall standpoint.

Generally I am expecting a widespread 1-2″ with a narrow corridor of 2-3″.  Maybe if someone sits under a heavier band for a prolonged period they could pull out 4-6″, but I’m just not confident in that at this time.

Overnight Tuesday & Wednesday AM Snowfall

-Chris


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