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A Winter Storm Will Bring Snow & Rain Sunday Night Into Monday Across Western & Central Mass

For Tonight: High pressure will nose into the region tonight. Any leftover clouds early this evening will give way to partly cloudy skies during the overnight hours of tonight. Low temperatures will be between 20 and 25 Degrees. Winds will be West at 5 to 10 mph. Sunday: High pressure will bring partly sunny skies during the morning. Skies will rapidly become cloudy during the afternoon as a developing low pressure system approaches from the southwest. High temperatures will be near 40 Degrees. Winds will be Southwest at 10 to 20 mph. Sunday Night & Monday: A strengthening low pressure system is expected to track near the south coast of New England and across the Cape during Sunday night before heading for Atlantic Canada on Monday. The snow-rain line is going to have to be watched extremely closely as weather forecast guidance seem to all be gradually trending southward with their forecast of where the snow-rain line may set up. Also, guidance seems to be showing less of a push of milder air into our area as that storm system moves through. This had led to weather forecast guidance showing more snow than rain across a large part of Western and Central Mass during Sunday night into Monday morning, especially across areas north of the Mass Pike. Additionally, both the higher resolution weather forecast guidance seems to be showing quite the dynamic look with strong forcing and quite a bit of upper-level energy as this storm system moves through. If this occurs, it would lead to all areas of Western and Central Mass to flip to heavy snow at times during the overnight hours of Sunday night and during the day on Monday. Two time periods of “interest” in terms of heavy snowfall intensity threat is from midnight Sunday night to 5 am Monday morning and then again from about 12 pm to about 5 pm Monday afternoon. I cannot emphasize enough in saying that this is a very difficult forecast, especially for a storm that’s only 24 hours away from occurring. On one hand, if we see heavy to very heavy amounts of precipitation occur during Sunday night and Monday, then the atmosphere will have no problems cooling off across the entire area leading to a heavy paste like snow to fall with several inches of accumulation. On the other hand, if we see only a light precipitation event, then we’d probably see rain occur all the way north to just north of the Worcester Metro and more snow than rain as we get into the northern Worcester Hills. Here Are My Thoughts Based On The Latest Data: For Areas Near & South Of The Mass Pike: For now, I’m going with a snow-rain mix beginning by about 9-10 pm Sunday evening. The snow-rain mix then looks to continue through the overnight hours of Sunday night through sunrise Monday morning. During the day on Monday, I think that we will see precipitation change to all snow by late morning or so with the snow continuing through the afternoon hours. Snow then comes to an end by evening on Monday. At this time, I’m going with snow amounts of 1 to 2 inches south of the Mass Pike and 2 to 3 inches of snow accumulation near the Mass Pike. For Areas North Of The Mass Pike, But South Of Route 62, Including The Worcester Metro: For now, I’m going with a snow beginning around 9-10 pm Sunday evening with the snow continuing through midnight. As we get into the after midnight hours of Sunday night, I think that we may see a snow-rain mix that lasts through sunrise Monday morning. During the day on Monday, I think that we will see the rain-snow mix change back to all snow by mid morning or so with the snow continuing through the afternoon hours. Snow then comes to an end by evening on Monday. For Areas Near & North Of Route 62, Including The Entire Route 2 Corridor: For now, I’m going with a snow beginning around 9-10 pm Sunday evening with the snow continuing throughout the rest of the night on Sunday night and all day Monday. This looks like it’ll be a wet heavy paste. The snow is expected to come to an end by Monday evening. At this time, I’m going with snow amounts of 4 to 6 inches across areas near and north of Route 62, but south of Route 2 and snow amounts of 6 to 8 inches across areas near and north of Route 2. Temperatures during Sunday night and Monday will range from near 30-33 Degrees across areas north of the Mass Pike to 33 to 36 Degrees across areas near and south of the Mass Pike. Winds during Sunday night and Monday will be Northerly at 10 to 20 mph with gusts to 30 mph. Tuesday: High pressure builds back into the area for Tuesday with partly sunny skies expected. High temperatures will be between 35 and 40 Degrees. Storm Threat Continues For Wednesday Afternoon Until Thursday Morning: Our consulting clients are receiving frequent updates on not only the upcoming storm for Sunday night and Monday, but also on the potential winter storm for Wednesday afternoon until Thursday morning. If you are a town/city DPW manager, a property management company owner, a contractor that does outdoor work for your clients, a construction company owner or just someone that heavily relies on the weather and needs specific and very localized weather guidance and weather updates, contact me at contact@route20weather.com for more information & prices to become a consulting client of mine.

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