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The latest weather guidance I look at seems to be pushing our storm system a bit further east with its forecast track. This could do two things - first is allow enough cold air to push into the area quicker than previously thought & two is focus the highest snow amounts across Central and Northeast Mass rather than Western Mass.

So, it still looks as if rain will overspread the entire area during Friday afternoon and Friday evening. The rain is likely to continue throughout Friday night and Saturday morning.

During Saturday afternoon, the rain is expected to change to snow across all of Western and Central Mass with the snow continuing through Saturday night. It looks like the snow will be light in intensity across Western Mass with a bit more heavier intensity in snowfall across Central Mass where a period of moderate to heavy snow is possible late Saturday afternoon and Saturday evening. The snow is expected to come to an end during the first part of Sunday morning. My latest snowfall accumulation forecast map is attached to this post. Please be aware that the forecast of this storm continues to be VERY uncertain and additional changes to the forecast may be needed. It's possible that the storm system may track even further east and if that happens, it could limit the area of heavier snow amounts (3-7") to areas along and inside of 495 with little snow occurring along and west of I-91.


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For Tonight: An area of high pressure will begin to build into the area tonight. This means that any early evening clouds and snow flurries will give way to clear to partly cloudy skies. Low temperatures tonight will be near 25 Degrees. Thursday: An area of high pressure will control the weather throughout Thursday. Plenty of sunshine is expected on Thursday with high temperatures between 45 and 50 Degrees. In addition, much lighter winds are expected on Thursday. Friday: Moisture ahead of a developing storm system over the southeastern United States is expected to reach Southern New England during Friday. This means that skies on Friday will be cloudy and there may be some rain shower activity during the afternoon. High temperatures Friday will be between 45 and 50 Degrees. Weekend Storm System Expected Across Western & Central Mass: A storm system is expected to head across southeastern Mass on Saturday afternoon before moving towards Eastern Maine and Nova Scotia on Saturday night. This is a complicated forecast and it is a forecast that is probably going to change over the next couple of days, so stay tuned. The two uncertain parts of this forecast are the exact track of the storm in relation to Southern New England and how much cold air will this storm be able to tap into. A storm that tracks across the Cape on Saturday may be able to pull down just enough cold air for the rain to change to snow across the Berkshires and along and north of Route 2 during later Saturday afternoon and Saturday evening. The changeover from rain to snow may occur across all of Western and Central Mass during Saturday night with snow gradually ending on Sunday morning. One thing that is for certain is that I don’t think that this will be an all rain event and I also don’t think that this will be an all snow event either. Instead, we may be looking at something where it rains for a while on Saturday and then changes to snow during Saturday night. Here is my thinking as of right now – Rain overspreads all of Western and Central Mass during Friday night with rain continuing through Saturday morning. During Saturday afternoon, the rain is expected to change to snow from northwest to southeast across the Berkshires and along and north of Route 2. Elsewhere across the region, rain is expected to continue. Snow is expected to continue on Saturday night into Sunday morning before ending across the Berkshires and along and north of Route 2. Elsewhere, rain may change to snow across the rest of Western and Central Mass during Saturday night with snow continuing into Sunday morning. All precipitation is expected to come to an end around midday Sunday. It is too early to even start mentioning how much snow may accumulate this weekend, especially considering how complicated and uncertain the forecast is. I have created a preliminary map of what to expect this weekend & an extremely early call at possible snow amounts. As I already mentioned, this is a forecast that will likely change over the next couple of days – so, keep checking back!



Thank you for reading my latest forecast for Western and Central Mass. I do not charge for this information, but I am asking for donations to offset operating costs. All donations go to directly offsetting my costs of running Route 20 Weather which include (but not limited to) website hosting & bandwidth, subscriptions to weather data services, as well as electricity and broadband internet. Any amount that you can donate is truly appreciated! Donations can be made by PayPal using E-Mail address contact@route20weather.com or by going to https://www.route20weather.com/donate . If you would rather donateby check or money order, please e-mail me at contact@route20weather.com & I can send you my mailing address. Thank you again for your support of Route 20 Weather!

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For This Afternoon: An area of high pressure located to the south of New England will provide plenty of sunshine this afternoon across Western and Central Mass. High temperatures will be between 50 and 55 Degrees with a light southwest wind. Tonight: That high pressure system will push off of the East Coast of the United States tonight. Skies are expected to be clear this evening with an increase in clouds expected after midnight tonight. Low temperatures tonight will be between 25 and 30 Degrees. Monday & Monday Night: An area of low pressure is expected to strengthen as it heads northward across Pennsylvania and New York State during Monday afternoon and Monday night. This will lead to rain overspreading Western and Central Mass by early Monday afternoon. The rain will become heavy at times by late Monday afternoon with heavy rain continuing through Monday evening. In addition, the atmosphere is likely to be unstable enough for some embedded thunderstorms to move through during the 4 pm to 8 pm time frame. A soaking rainfall with widespread 1 to 2 inches of rain can be expected. Some localized rainfall amounts of up to 3 inches is certainly possible with this storm. This means that localized street flooding looks quite possible during Monday afternoon and Monday evening, which will impact the late Monday afternoon and Monday evening rush hour. In addition to the heavy rain threat, windy conditions still look likely during Monday afternoon and Monday evening. It is expected that south to southeast winds will gust up to 40 to 50 mph at times during Monday afternoon and especially during Monday evening. The bulk of the rain is expected to end by midnight Monday night, however, some lingering showers will continue right into Tuesday morning across the entire area. High temperatures Monday will be between 55 and 60 Degrees. Low temperatures Monday night will be near 50 Degrees. Tuesday: An upper level low pressure system is expected to be situated across the eastern Ohio Valley on Tuesday. This will keep us cloudy and I expect to see some fairly widespread rain showers around throughout the day Tuesday. Temperatures on Tuesday will be between 50 and 55 Degrees. Wednesday & Thursday: Wednesday is expected to feature a mixture of sun and clouds with high temperatures between 40 and 45 Degrees. Thursday is expected to be a sunny to partly sunny day with high temperatures near 45 Degrees. Friday Through Saturday: An area of low pressure is forecast to form to the southeast of Long Island on Friday evening and then head towards Nova Scotia by Saturday morning. This storm is expected to bring another round of rain to the area during Friday afternoon and Friday evening with lingering rain showers lasting into Saturday. High temperatures Friday will be near 50 Degrees. Low temperatures Friday night will be near 40 Degrees. High temperatures Saturday will be between 45 and 50 Degrees. Thank you for reading mylatest forecast for Western and Central Mass. I do not charge for this information, but I am asking for donations to offset operating costs. All donations go to directly offsetting my costs of running Route 20 Weather which include (but not limited to) website hosting & bandwidth, subscriptions to weather data services, as well as electricity and broadband internet. Any amount that you can donate is truly appreciated! Donations can be made by PayPal using E-Mail address contact@route20weather.com or by going to https://www.route20weather.com/donate . If you would rather donateby check or money order, please e-mail me at contact@route20weather.com & I can send you my mailing address. Thank you again for your support of Route 20 Weather!

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