A coastal storm that rolled into New England on Sunday will continue to dump rain on Massachusetts throughout Monday, with high winds and flooding along the coast likely.
Forecasters with the National Weather Service expect about three-quarters of an inch of rain to fall over the western half of southern New England on Monday. In the eastern part of the region, forecasters expect up to an inch and a half of rain, especially over Southeastern Massachusetts.
There is a chance Cape Cod and the Islands get a break from the rain Monday morning, which would keep totals lower.
“Still not overly concerned about the possibility of thunderstorms today, but the risk is not negligible,” forecasters wrote. “There should be some periods of drier weather between these showers.”
Gusty winds are likely throughout the day, peaking Monday morning. The strongest winds will be over Cape Cod and the Islands, where gusts of up to 50 mph are expected, with some power outages possible.
The impacts of the storm will be felt into Tuesday, with continuing rain and northerly breezes.
“The character of the rain trends more intermittent or even drizzle,” forecasters wrote.
Wind gusts between 20 and 25 mph are likely on Tuesday, with highs in the mid-50s to low-60s. But the breeze will keep it feeling cooler than that.
The storm system is expected to finally pull away Tuesday evening, and rain will start to taper off west to east that night. That said, intermittent showers over Cape Cod and the Islands are possible overnight.
In the wake of the storm, forecasters expect an elongated area of low pressure to set up over the northeast. That low pressure will “catch” the coastal low that brought the stormy conditions, tightening the pressure gradient again.
The low pressure will also bring in an unseasonably cool airmass later this week. To that end, forecasters expect blustery and dry conditions with below-normal temperatures between Wednesday and Friday.
“High temps in the mid 50s, though it may feel like the 40s with the breezes,” forecasters wrote.
Cape Cod and the Islands could see some ocean-effect showers, with cloudy weather and stronger northeast winds also likely. Those winds could lead to some coastal flooding on Wednesday and Thursday for Nantucket and possibly Cape Cod.
Looking ahead to the weekend, a significant change to the weather pattern appears to be in store.
Forecasters expect sunny and dry conditions, with the possibility of temperatures climbing well into the 70s.
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