Nor’easter incoming: When does accumulating snow start in Massachusetts?

DEDHAM, Mass. — As the northeast braces for an incoming nor’easter, we’re keeping an eye on the timeline for the storm’s arrival, expected impacts, and potential snowfall totals.

Blizzard and winter storm warnings have been issued across all of Massachusetts due to expected heavy snow, powerful wind gusts, and coastal flooding concerns.

The nor’easter is expected to move in on Sunday night before tapering off Monday night into Tuesday. Light snow showers and flurries are possible before the bulk of the storm arrives.

So, what is the approximate start of the accumulating snow on Sunday night? Here’s a look at a timeline provided by the National Weather Service of Boston:

South of Boston into northern Rhode Island, including parts of the South Coast and South Shore, could see 18-24 inches.

A foot to 18 inches of snow is possible for Boston, communities on the North Shore, coastal points along the South Shore, and across the Merrimack Valley.

Up to a foot of snow is possible in Worcester County up to the New Hampshire border.

Travel during the storm could be dangerous due to possible whiteout conditions in areas where wind gusts will be strong. Coastal flooding and power outages are also likely.

The Boston 25 Weather team will continue to monitor the forecast and provide updates as they develop.

For the latest forecast, visit the Boston 25 Weather page or download the Boston 25 Weather app.

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