Metro

Forecasters warn up to 6 inches of snow could fall in Greater Boston this weekend

Better get out those boots and gloves. Four to 6 inches of snow are expected to fall in much of Massachusetts this weekend, the National Weather Service said.

The snowfall amounts are expected to be lower in parts of Southeastern Massachusetts and on Cape Cod and the islands, where less than an inch is expected. Less snow is also expected to the west of the Quabbin Reservoir, with only about 2 inches falling in Pittsfield at the western edge of the state, according to snowfall forecast maps issued by the service.

Boston and Providence are both at risk of getting heavy snow, said Frank Nocera, a meteorologist with the service.

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But the storm is still two days away and its path could change, Nocera said.

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“We normally don’t know this level of detail until one day before the storm,” he said. “Tomorrow it could be Worcester to Springfield [that could be hit the hardest], but as we get closer to the event we can pin down more of the details.”

The snow is expected to arrive Saturday, especially during the afternoon and night.

“The steadiest snow will be in the afternoon or evening Saturday,” tapering off by midnight, Nocera said.

Forecasters said uncertainty still remains about the amount of snow that will fall, noting that the possibility remains of a much lighter snow — or snow piling up to 7 inches in some areas.

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“Part of it has to do with the time horizon,” Nocera said. “We’re still two days away from the event … so obviously things can change as you get closer to the event.”

“Also, the jet stream that’s going to capture this storm and bring it up the coast is going to be a little bit stronger than anticipated,” he said.

If the jet stream intensifies, the storm could shift west, hitting harder in Worcester and Springfield, Nocera said.

The agency advised anyone traveling to eastern New England Saturday or Saturday night to keep an eye on the forecast, saying that travel on Interstate 95 might be affected.

Some wind accompanied by rain or more accumulating snow is possible Monday night into Tuesday, the weather service said.

Martin Finucane of the Globe staff contributed to this report. Ben Thompson can be reached at ben.thompson@globe.com. Follow him on Twitter @Globe_Thompson. Alyssa Meyers can be reached at alyssa.meyers@globe.com. Follow her on Twitter @ameyers_.