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Storm generating wet snow may hamper evening commute, National Weather Service says

The storm that was expected to drop only a few flakes on Boston is now threatening to muddle the evening commute with wet snow and restricted visibility, according to the National Weather Service.

“It might trend colder than what we were originally thinking and that’ll keep the snow falling longer,” said meteorologist Benjamin Sipprell. “We can’t rule out the development of black ice, but the bigger concern is the visibility.”

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Light snow is already falling in the Worcester Hills, bringing visibility down to one to two miles, Sipprell said. Norwood is also seeing snow.

“We should start seeing some flakes falling in the Boston metro area within the next hour,” he said.

Snow will start to stick to grassy areas by midday, Sipprell said. The roads will likely stay wet, but free of any snow accumulation.

Areas south of the Massachusetts Turnpike, including Taunton, Brookline, Mansfield, and Foxborough, could see 3 to 4 inches by tonight, he said.

MetroWest may see 1 to 2 inches of snow, while the city itself will likely see a mix of rain and snow, with only a trace amount of snow accumulating, he said. Temperatures in Boston will be in the high 30s today, getting as warm as 41.

The Cape and Islands will only see rain, he said.

The snow could continue to fall through the overnight hours, depending on the cold air following the precipitation, Sipprell said.

A deep, flash freeze would produce black ice, but there is more likely to be a gradual movement of cold air into the region, he said. Boston temperatures will dip to about 31, while temperatures near the Mass Pike will be in the mid-20s.

Commuters may still see snow Wednesday morning.

“There might be some lingering flurries and flakes into the Wednesday morning time frame as the snow lifts out,” he said.

Melissa Werthmann can be reached at melissa.werthmann@globe.com.
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