Timeline: What forecasters are saying about the duration and intensity of the Tuesday snowfall

“The Tuesday morning commute could be heavily impacted, especially for those on I-95/I-93."

Rashad Taylor clears snow on Genesee Street in Springfield's Liberty Heights neighborhood after an overnight snowstorm, Monday, Dec. 2, 2019, in Springfield, Mass. (Don Treeger/The Republican via AP) — –Don Treeger / The Republican via AP

By

Dialynn Dwyer Boston.com Staff

December 2, 2019

The coastal storm that started dumping snow and rain on Massachusetts on Sunday is still going — and is forecast to intensify over the region starting Monday night into Tuesday.

Meteorologists with the National Weather Service said the “prolonged winter storm” will bring another round of accumulating snowfall as it amps up.

“The Tuesday morning commute could be heavily impacted, especially for those on I-95/I-93,” forecasters wrote.

Most of Massachusetts is under either a Winter Storm Warning, in effect through 7 a.m. Tuesday, or Winter Weather Advisory, in place through 1 p.m. Tuesday.

The heaviest snow will occur between 5 and 11 a.m. Tuesday, according to the service.

[Snow Timeline Tuesday] Here is an approximate timeline of duration & intensity of #snow Tue with the loop beginning at 4 am & ending 6 pm. Heaviest snow 5 am to 11 am in eastern #MA including #Boston. Blue is snow, darker blues = heavier snow. Green is rain. #RI #CT pic.twitter.com/IDaXPlbKUW

— NWS Boston (@NWSBoston) December 2, 2019

“We are right on the edge between a moderate snowfall and a big wind driven morning mess,” WBZ meteorologist Eric Fisher said of Tuesday’s morning rush hour. “Game of miles.”

Still looks like a snowy morning commute tomorrow for eastern MA as the next low spins around east of us. Final phase of this storm system. pic.twitter.com/LdK3O4vUmu

— Eric Fisher (@ericfisher) December 2, 2019

That green shading is a ripping 1-2"/hour snow band tomorrow during rush hour.

We are right on the edge between a moderate snowfall and a big wind driven morning mess. Game of miles. pic.twitter.com/IGUGkUE0rm

— Eric Fisher (@ericfisher) December 2, 2019

Eastern Massachusetts is estimated to have seen just a few inches of accumulation so far, while the central and western parts of the state have observed higher totals. Much of the state is forecast to see between 4 and 8 inches more snow by the time the storm is over.

Follow live updates from local meteorologists here.

TOPICS: Weather Local Forecasts Weather Maps Local Massachusetts

Be kind. Be civil.

Boston.com Community Guidelines

Share a news tip: tips@boston.com

Suggest a correction: editors@boston.com

BOSTON, MA - 12/11/2019: With the type of weather in the city, ii's a good idea to wear your booties while out for a walk in downtown Boston like this group walked by Matthew Rese who are all booted up ! ( a dog walker in Boston ) . (David L Ryan/Globe Staff ) SECTION: METRO TOPIC stand alone photo

Here's what to expect from Thursday's weather forecast December 11, 2019 | 5:54 PM

Scituate12/11/19 A Christmas wreath adorns the Scituate Lighthouse as morning snow falling covers the lightkeepers cottage and house. Photo by John Tlumacki/Globe Staff(metro)

Map: Here are the initial snowfall totals for Massachusetts December 11, 2019 | 1:00 PM

Brookline, MA - 02/07/18 - Dog owners congregate in Amory Park as a snowfall begins in Brookline. (Lane Turner/Globe Staff) Reporter: () Topic: ()

6 maps predicting how much snow will accumulate today December 11, 2019 | 7:49 AM

What Boston meteorologists are saying about Wednesday's snow — and the morning commute December 10, 2019 | 9:14 PM

Cars drive through snow on Dec. 3 in Boston.

Here's what to expect from Wednesday's weather forecast December 10, 2019 | 5:39 PM

A little snow is coming Wednesday. Here’s David Epstein's forecast. December 10, 2019 | 4:34 PM

12/03/2019 Boston Ma- Shawmut Street in Boston's South End, had people having to clear off their car's ,from a fresh blanket of snow. (Jonathan Wiggs/Globe Staff)

5 maps predicting how much snow will fall in Mass. on Wednesday December 10, 2019 | 9:07 AM

A Freedom Trail tour guide pops open an umbrella before stepping out into the rain on Nov. 18.

Here's what to expect from Tuesday's weather forecast December 9, 2019 | 5:53 PM

Here's what Boston meteorologists are saying about the snow forecast for Wednesday December 9, 2019 | 4:38 PM

01/08/2019 Boston MA -A light dusting of snow in Dorchester, on Columbia Road , left footprints, made by pedestrians. . Jonathan Wiggs/Globe StaffReporter:Topic:

4 maps predicting how much snow could fall in Mass. on Wednesday December 9, 2019 | 9:00 AM

People struggle with their umbrellas while walking in Boston.

Here's what to expect from Monday's weather forecast December 8, 2019 | 4:50 PM

Pedestrians cross Atlantic Ave. outside South Station in Boston on Jan. 29.

Here's what to expect from Saturday's weather forecast December 6, 2019 | 5:43 PM

Cars drive through snow on Dec. 3 in Boston.

Map: Here’s how much snow Mass. could see Friday afternoon December 6, 2019 | 7:31 AM

Light flakes fly at Columbia Road and Blue Hill Avenue on Dec. 1.

Here's what to expect from Friday's weather forecast December 5, 2019 | 5:42 PM

Sledding on Boston Common during the first winter storm of the season in Boston, Dec. 3, 2019. A winter storm that barreled across the United States from Cedar Grove, Calif., where it dropped 49 inches of snow, to Ogunquit, Maine, which saw more than a foot, was finally departing on Tuesday, but not before giving New England one last whack.

Map: The final snow totals from the season's first big winter storm December 5, 2019 | 10:34 AM

wind

Here's what to expect from Thursday's weather forecast December 4, 2019 | 5:42 PM

Elizabeth Pancotti with her dogs Oliver and Mabel on Boston Common during the first winter storm of the season in Boston, Dec. 3, 2019. A winter storm that barreled across the United States from Cedar Grove, Calif., where it dropped 49 inches of snow, to Ogunquit, Maine, which saw more than a foot, was finally departing on Tuesday, but not before giving New England one last whack.

Map: How much snow fell in Mass. from the first ‘significant' winter storm of the season December 4, 2019 | 1:03 PM

weather forecast wednesday june 19

Here's what to expect from Wednesday's weather forecast December 3, 2019 | 5:31 PM

Maps: Here are the snow totals across Massachusetts December 3, 2019 | 9:31 AM

Stoneham, MA, 12/2/2019 -- Francis Capuano, of Stoneham tried to get his snowblower to start back up so that he could clear the rest of the snow from his driveway after the first storm of December. (Jessica Rinaldi/Globe Staff)

Topic: 03weatherpic
Reporter:

5 maps predicting how much snow could still fall in Massachusetts December 3, 2019 | 8:26 AM

Piles of snow line the streets in Worcester, Mass., Monday, Dec. 2, 2019. A wintry storm that made Thanksgiving travel miserable across much of the country gripped the East with a messy mixture of rain, snow, sleet and wind. (Christine Peterson/Worcester Telegram & Gazette via AP)

WINTER STORM DAY 3

'It's a very slow commute': Here's when forecasters say the 'lingering' storm will end December 3, 2019 | 7:34 AM

A woman clears snow from her car's rear window Sunday night.

Here's what to expect from Tuesday's weather forecast December 2, 2019 | 5:54 PM

snow on the common

Here's David Epstein's snowstorm forecast December 2, 2019 | 2:20 PM

Boston, MA - A person walks through the Boston Common in Boston, Mass. on Monday, Dec. 2. (Nic Antaya for The Boston Globe) Topic: WeatherFeature

'Tomorrow's AM commute looks much worse' December 2, 2019 | 11:05 AM

People clear snow in a shopping center in Marlborough Monday.

Maps: Here’s how much snow has accumulated in Mass. so far December 2, 2019 | 9:04 AM

In this Sunday, Dec. 1, 2019 photo, a family walks up Front Street during a snow storm in Worcester, Mass. A wintry storm that made Thanksgiving travel miserable across much of the country gripped the East with a messy mixture of rain, snow, sleet and wind. (Christine Peterson/Worcester Telegram & Gazette via AP)

UPDATED: 7 maps predicting how much snow could still fall in Mass. through Tuesday December 2, 2019 | 8:06 AM

A worker clears the walkway in front of the Children's Museum in swirling snow during a February storm.

Here's what to expect from Monday's weather forecast December 1, 2019 | 6:44 PM

Istem Fer of Medford walks through the snow on her commute to Boston University on March 4 in Medford.

8 things Boston residents need to remember when it snows December 1, 2019 | 3:01 PM

A woman walks between buildings at South Bay Center.

Here’s David Epstein's forecast for the snowstorms November 30, 2019 | 7:41 PM

Fitchburg, MA: 3/7/2018: A motorist cleans snow off of their car in the parking lot of the Central Plaza near downtown Fitchburg as the storm intensifies. Another winter storm is predicted to hit the area this afternoon and tonight. (Jim Davis/Globe Staff)

The very latest from Boston meteorologists on the snow November 30, 2019 | 5:46 PM