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Torrential downpours could drop 2 inches per hour

AP via NOAA

A turbulent weather system moved eastward across Massachusetts Wednesday, bringing torrential downpours and flash flooding in parts of the state.

The National Weather Service said some parts of western Massachusetts received more than five inches of rain — the most in the state Wednesday.

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Heavy rains that dumped 5 inches in a single hour in the area of Long Island, N.Y., reached southern Massachusetts by early Wednesday afternoon, meteorologist Bill Simpson said.

As of Wednesday evening, eastern Massachusetts, south of the Boston area, only received about an inch of rain, despite prior warnings of more rainfall, said meteorologist Eleanor Vallier-Talbot.

A flash flood warning was in effect for Hampshire, Franklin, Middlesex, and sections of Worcester county until 7:45 p.m., Vallier-Talbot said. A flash-flood warning is in effect for northeast Worcester and north-central Middlesex until 9 p.m.

Flash flood warnings for the rest of the state were expected to end by 8 p.m., Vallier-Talbot said.

As of Wednesday evening, rain was still falling on parts of central Massachusetts, Vallier-Talbot said. As the rain moves eastward into the evening, “the precipitation should diminish,” Vallier-Talbot said.

“Tonight we are expecting showers with a slight chance of thunderstorms,” Vallier-Talbot said. “Parts of eastern Massachusetts will see showers through the night, but it should be clearing out after midnight.”

The National Weather Service issued a coastal flood advisory from 9 a.m. to 4 p.m., but did not receive any significant reports of splash-overs.

Parts of Morrissey Boulevard in Dorchester flooded around 2 p.m., but has since subsided, Vallier-Talbot said.

In addition to the ongoing flash flood warnings for most of the state, the weather service also warned Wednesday afternoon that gusty winds could result in broken branches and power outages throughout Massachusetts. However, no significant damages were reported.

Despite Wednesday’s rainfall, Simpson said Thursday is expected to turn dry, bringing sunny, “nice, beautiful,” and “seasonably cool” weather with high temperatures barely exceeding the mid-70s.

A dry, clear weather pattern will likely last until Sunday, when there is a chance for scattered showers.

Kiera Blessing can be reached at kiera.blessing@globe.com. Trisha Thadani can be reached at trisha.thadani@globe.com.
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