Weekly Outlook, Winter Weather

Weekly Outlook: December 30, 2019 – January 5, 2020

Another year has come and gone, but before we get to New Year’s Eve, we’ve got quite a mess to deal with today.

A variety of Advisories and Warnings are in effect across the Northeast today. Image provided by Pivotal Weather.

Low pressure will move into the Great Lakes today, with a frontal system extending eastward to the Mid-Atlantic coastline. This will keep us on the cold side, but warmer air will move in aloft. When you have warm air aloft, cold air below, and precipitation, you get sleet or freezing rain, depending on how thick the layers of warm and cold air are. For today, we’re looking at freezing rain across the higher elevations of Worcester County up into the Monadnocks, with a mix of sleet and some freezing rain from southern New Hampshire into the Merrimack Valley and interior portions of eastern Massachusetts. This will result in significant travel problems, not to mention the potential for tree and power line damage. For the rest of our area (mainly south and east of I-95), warmer air moving in off the ocean will keep temperatures above freezing, so it’ll be just another rainy, but chilly, Monday.

The potential still exists for some significant sleet accumulations from the Merrimack Valley into Southern New Hampshire today. Image provided by WeatherBell,

A secondary area of low pressure will move off the Mid-Atlantic coastline tonight, and pass across Cape Cod before moving into the Gulf of Maine on Tuesday. This should force the warmer air farther inland, with a change to plain rain for most of the area, though sleet and/or freezing rain will still be likely up into central New Hampshire. As that low moves into the Gulf of Maine on Tuesday, everything will start to wind down in the morning.

Freezing rain will likely cause problems from the Worcester Hills into the Monadnocks and also across the Berkshires today. Image provided by WeatherBell.

As for New Year’s Eve, the original low pressure area from the Great Lakes will pass north of the region, dragging a cold front through. Although it will likely remain dry, a few snow showers or flurries can’t be ruled out during the evening. Skies should be partly to mostly cloudy at night, with midnight temperatures generally in the 30s. An upper-level low will move across the region on New Year’s Day, so we’ll have some clouds, but probably not any flurries, though it will be seasonably chilly. High pressure then builds in for Thursday with sunshine and seasonable temperatures.

The next storm system moves into the Great Lakes Friday into Saturday. Oh great, another ice storm, right? Nope. This time, it looks milder (much milder on some models), so we’re looking at mainly rain, probably not a lot of it though. An early look at the weather for Foxborough Saturday evening (don’t get us started on the fact there will actually be a game this weekend), is for partly cloudy skies, light winds, and temperatures in the lower 40s. Drier and colder air settles in for Sunday.

Highs in the 50s on Saturday? The GFS thinks so, We’re not convinced yet. Image provided by Weathermodels.com

Monday: Breezy with sleet and freezing rain across the interior, rain along the coast. Sleet accumulations of an inch or two are possible across the Merrimack Valley and southern Hampshire, while up to 1/2″ of ice accretion is possible across the higher elevations of the Worcester Hills and the Monadnocks. High 30-37.

Monday night: Precipitation changing to all rain most areas, except sleet and freezing rain continue across central New Hampshire. Temperatures will slowly rise overnight.

Tuesday: Rain tapers off and ends in the morning, some sunny breaks may develop in the afternoon. High 39-46.

New Year’s Eve: Partly cloudy, chance for a snow shower or flurry during the evening. Low 25-32.

New Year’s Day: A mix of sun and clouds, breezy. High 34-41.

Thursday: Sunshine and just a few clouds. High 36-43.

Friday: Cloudy with some light rain or showers likely. High 40-47.

Saturday: A cloudy start, then becoming partly sunny. High 48-55.

Sunday: Intervals of clouds and sunshine. High 36-43.

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