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Snow Overspreads New England; Cold Settles in Afterward

Light to moderate snow has overspread New England this morning. This snow will continue to fill in across New England as the day goes on. Northern and eastern Maine will be seeing the most snow, where up to a foot will be possible. Elsewhere in New England will see a widespread 3-6 inches, with less near coastal areas.

Radar as of 8:30am:

This is a very one-dimensional storm with snowfall. No wind, rain, coastal impacts or power outages will be an issue. The snow will begin to gradually taper off from west to east beginning around late-afternoon as the storm center enters into downeast Maine this evening.

The storm will be strengthening as it passes by New England and eventually into Maine. This will allow more moderate to heavy snowfall rates in eastern and northern Maine this evening into the first part of the overnight, hence the higher snowfall amounts. Near the coast, more mild air will work into the system, allowing a mix or changeover to rain as the storm takes a track very close to the coast.

Expected weather mid-afternoon (1st image) and this evening (2nd image):

Unlike our previous storms, this snow will be sticking around as temperatures will be hard pressed to rise above freezing for the rest of the week. A typical cold air mass will follow behind this system along with blustery conditions. It will feel pretty cold out there on Wednesday. Wind chills will remain in the single digits to teens in northern New England and the teens to low 20s in southern New England.

On Wednesday, winds will be gusting 20-30mph around New England. Areas that see a light, fluffy snow all day today will experience some blowing and drifting snow, which could reduce visibilities at times.

The cold hangs around on Thursday and Friday, with temperatures similar to Wednesday. Winds will begin to slacken and there will likely be more clouds around. Friday will see another storm system pass New England.

This system continues to look like it will pass well south of New England, bringing southern New England a glancing blow. There is still spread in the models, so there's wiggle room for the track to change, but things have overall been trending southward.

The south coast of New England, mainly Cape Cod, currently has the best chance of seeing some accumulating snow out of this system. The system itself will be stronger than the Tuesday storm, but further away. The storm system itself is expansive, so even a track well away from New England may still send snow showers into New England.

After this system, the arctic air mass that has been dominating the center of the country will begin to push eastward for the weekend, mainly Saturday. This will come as a large trough swings over the eastern United States. The core of this trough will be over New England on Saturday, bringing the coldest temperatures. As usual, the temperatures will moderate as the air mass shifts east, so actual temperatures will not be sub-zero like in the midwest.

All of New England will struggle to make it to 20 degrees, with much of northern New England not getting close to that mark, remaining in the low to mid teens. There will also be a wind factor, so wind chills will remain in the single digits on either side of zero through most of Saturday, Saturday night and into Sunday morning.

Temperatures will moderate back to near seasonable level by Sunday afternoon after a very cold morning. An expansive area of high pressure will build south of New England, allowing a more southerly and westerly flow, boosting temperatures heading into next week.

Weather map for Monday, January 22:

This cold may end up being the exception rather than the rule for the remainder of January as both the NAO and AO Indices are expected to turn back to positive territory for the second half of the month after being entrenched in a negative phase, which is a big factor in our stormy start to the year. This is reflected by the Climate Prediction Center's temperature outlook, showing above average temperatures expected for all of the United States in both the 6-10 and 8-14 day outlooks.



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