Storm set to drop several inches of snow on Greater Boston, snarl evening commute

Wintry weather makes its way into Greater Boston on Tuesday afternoon, bringing sleet and likely 4-7 inches of snow while threatening to disrupt the evening commute.

The National Weather Service has issued a winter storm warning that will take effect at 2 p.m. Tuesday and has warned that anyone on the roads starting in the afternoon could face dangerous conditions. Slick roads and poor visibility will be widespread.

Forecasters expect snow to fall at the beginning of the storm and collect quickly, with most of the accumulation occurring by 7 p.m.

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“Travel could be very difficult,” forecasters wrote. “A Winter Storm Warning means significant amounts of snow, sleet, and ice will make travel very hazardous or impossible.”

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Temperatures should remain cold through the morning but slowly increase over the course of the storm, transitioning precipitation from snow to freezing rain to sleet, and possibly even to rain early Wednesday, forecasters said.

As of early Tuesday, the weather service predicted 1-2 inches of snow along the South Shore, 2-4 inches south of the Mass. Pike extending out toward Worcester, and anywhere from 4-8 inches in Boston and points north and west.

Communities in the northwest corner of the state are likely to see the greatest accumulation with North Adams and Greenfield likely to see nearly an inch an hour from 1 p.m. through sundown.

Peter Bailey-Wells can be reached at peter.bailey-wells@globe.com. Follow him on Twitter @pbaileywells.