Forecast discussion: A strong high pressure system over Tennessee at the moment brought Boston a beautiful day of sunshine. However, the sun wasn’t very strong, as a dome of Arctic air remains over New England. The high will move eastward, but a low pressure system moving into Quebec will create a stronger pressure gradient. This pressure gradient will become tighter, and tighter pressure gradient equates to stronger winds.
Winds will diminish by Friday night as the low and high continue to move away from one another. Partly cloudy skies and diminished winds will also lower our temperatures into the middle teens before dawn on Saturday morning.
As we head into the weekend, the computer models indicate that a coastal storm will bring some accumulating snowfall, starting Saturday afternoon. The computer models all agree we will begin to see some flurries and light snow showers by lunchtime. Heavier bands of snow will arrive by the evening, so driving conditions will worsen. During the overnight hours, it appears that we will see a mix of snow and sleet early Sunday morning. A changeover to sleet, freezing rain, and rain will happen during the mid-morning. All precipitation will change back to snow showers before the storm ends by early Sunday afternoon. At this time, I would go for about 3-6 inches of snowfall for the entire storm. However, this amount could change, if the track for the low moves further east. We would remain under colder air, keeping the snow lasting longer.
We will see mostly sunny skies to start Monday, but a quick moving Alberta Clipper will bring increasing clouds by the evening. The computer models continue to keep Southern New England dry from seeing any precipitation on Tuesday, but I will keep the chance for rain and/or snow showers in the forecast.
By the time we reach the middle of next week, high pressure ridging will move over Southern New England, giving us partly to mostly sunny skies. High temperatures will be in the middle to upper 30’s, with lows in the lower to middle 20’s. Looking way ahead into the future, the American model is showing a low pressure system in the Ohio River Valley by next Friday. So, there is a chance we could see another storm for next weekend.
72 hour forecast:
Tonight: Partly cloudy with a low of 18.
Friday: Mostly sunny to start, with partly sunny skies by the afternoon. We will see a high of 29 with very strong winds coming from the west-northwest at 17-22 mph with occasional gusts of 30 mph.
Friday night: Partly to mostly cloudy and very cold with a low of 14. Winds will diminish from the north-northwest to 8-11 mph.
Saturday: Overcast by mid-morning, with light snow starting around 1 p.m. We will have a high of 26. Snow will become heavier throughout the afternoon and early evening.
Saturday night: Moderate snow mixing with sleet during the overnight hours. We will see a low of 25.
Sunday: A wintry mix of sleet and freezing rain until mid-morning, before changing back to snow showers. All precipitation ends by the early afternoon. We will see a high of 35.
Sunday night: Partly cloudy with a low of 18.
Monday: Mostly sunny with increasing clouds by the evening. Highs 26-29, lows 11-14.
Tuesday: Overcast with possible rain/snow showers. Highs 33-36, lows 24-27.
Wednesday: Partly sunny. Highs 35-38, lows 23-26.
Thursday: Mostly sunny. Highs 34-37, lows 21-24.