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Boston weather, metro north and west: Risk light snow, flurries early Wednesday

An ocean storm well offshore may bring a touch of very light snow or flurries to the Boston area late tonight and early Wednesday.
An ocean storm well offshore may bring a touch of very light snow or flurries to the Boston area late tonight and early Wednesday.

The low pressure system that made weather news today by bringing snow and ice across the deep South will track northeastward over the open waters of the Atlantic tonight. Clouds were on the increase through the afternoon and have overspread the area this evening as the ocean storm approaches far offshore later tonight.

Last night we mentioned the system was tracking further west and because of this snow was expected across Cape Cod and the Islands. It now appears the edge of the precipitation inches just up to our doorstep later tonight and then moves out early Wednesday morning. While forecasters are indicating a few inches of snow may fall across Cape Cod the drop off in the local area should be only an inch at most in the immediate Boston area and points south to a coating across the north shore with flurries possible elsewhere through the Merrimack Valley and the I-495 corridor. Cape Ann may see an inch or so out of this as well, but overall this is a very low impact event locally.

High pressure builds in on the heels of the departing low for Thursday then a weak cold front approaches Friday bringing an increase in clouds. There is just the slightest chance of a passing flurry, snow or rain shower in the afternoon, especially well inland.

The very cold air remains in place through Wednesday night as we continue to shiver in this latest blast of arctic air and try to figure out how we will pay those increasing heating costs. This has been a particularly cold stretch the last two months and as we approach the final days of January one has to wonder if we can catch a break in February.

Well, for the short term we do see a slight moderation in temperatures over the coming days with another threat for a light precipitation event this weekend, in particular Saturday and Saturday night. With a low pressure system tracking to our west we remain on the milder side of this system so it is a pretty good bet that we do get light rain, perhaps mixing with snow inland at night. Details later in the week.

72 Hour Outlook:

Tonight: Cloudy, chance of light snow developing late, flurries well north and west. Cold, lows around 10 inland to 15 in Boston. Light west winds.

Wednesday: Considerable cloudiness early, chance of light snow or flurries into mid morning. Increasing sunshine through the afternoon. Remaining cold, highs in the low 20s. West winds 5 to 15 mph.

Wednesday night: Clear and very cold. Lows 5 to 10. Light winds.

Thursday and Thursday night: Mostly sunny through the day with increasing clouds overnight. Not as cold. Highs in the upper 20s to 30 degrees. Nighttime lows in the upper teens to low 20s.

Friday: Considerable cloudiness. A touch milder. Highs in the mid to upper 30s.

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