Forecast discussion: Boston remained under grey clouds for much of Sunday, as the high temperature recorded at Logan Airport was only 46 degrees as of writing this article. We will not return to seasonable temperatures until the weekend. Until then, we will have to go through a large low pressure system that will give us some decent rainfall before the weekend.
Despite a high pressure ridge over the region, we will continue to have more clouds than sun on Monday, and winds from the northeast will keep high temperatures slightly below normal. Some parts of eastern Massachusetts may reach 60 degrees for daytime highs. We will continue to see dry conditions into Tuesday morning. There is the slight chance of a passing shower during Tuesday afternoon. However, we will see wet weather for Wednesday and Thursday.
The rainfall will come from a low pressure system now centered over northwest Nebraska. This system has created severe weather from Minnesota down to Tennessee. As of writing this article, a confirmed tornado on the ground was heading towards Joplin, MO. This is the same city that was hit by an EF5 tornado on May 22, 2011. Now, we will not see any severe weather once the low moves east, but we will see some heavier rainfall by Wednesday night. The low’s center will get blocked, and move back into the Great Lakes. Meanwhile, the cold front will carry a series of low pressure systems along it and into the Northeast U.S. We could see up to a total of an inch and a half of rain before it all ends early Friday morning.
A weak high pressure ridge will bring us some sunshine for Friday afternoon. Also, temperatures will finally stay in the lower to middle 60’s into the weekend. However, the main low staying over the Great Lakes will finally get pushed eastward by an upper level trough. We may see isolated showers Saturday morning, and continuing into Sunday morning. By this time, the low will have moved offshore, allowing for a high pressure ridge to build over the region. We will end next weekend with some sunshine by Sunday afternoon.
72 hour forecast:
Tonight: Mostly cloudy with a low of 42.
Monday: Partly sunny with a high of 57. Winds will come from the north-northeast at 12-15 mph.
Monday night: Mostly cloudy to overcast skies. We will see a low of 43 with northeast winds of 13-16 mph.
Tuesday: Overcast skies with isolated showers developing by the late morning. We will have a high of 49.
Tuesday night: Steadier showers/light rain begins by midnight with a low of 41.
Wednesday: Showers and light rain with a high of 47.
Wednesday night: Rain becomes heavier by 3 a.m. with a low of 44.
Thursday: Moderate to heavy rain with possible thunderstorms by the late morning. Precipitation tapers to showers by the late afternoon. Highs 59-62, lows 49-52.
Friday: Showers/light rain ends around 4 a.m. with partly to mostly sunny skies by the afternoon. Highs 63-66, lows 46-49.
Saturday: Cloudy by mid-morning, with possible showers by the late morning. Highs 62-65, lows 47-50.
Sunday: Isolated showers end in the morning, with partly sunny skies. Highs 60-63, lows 45-48.