Wintry Mess Predicted Across Parts of the Northeast

A winter storm that has been working its way across the country is expected to bring a strong dose of winter weather to the northeastern United States on Saturday, with snow accumulations as high as seven inches expected across Boston and other cities.

In New York, snow is expected to begin falling late Saturday afternoon before changing to a mix of rain, snow and sleet into the night. Three to five inches of snow and sleet are possible by Sunday, with even more in some parts of the metro area, according to the National Weather Service.

Areas around Boston, where up to an inch of snow an hour may fall on Saturday night, are expected to see snow totals of between five and 11 inches before the storm moves off the East Coast on Sunday.

In the Northeast, winter weather advisories and winter storm warnings were in effect until Sunday across New York, New Jersey and New England. Winter storm warnings on Saturday also stretched from Wisconsin through Minnesota and into the Dakotas.

This is the second winter storm in a week to traverse the country, creating a dividing line of warmer rainy weather in the south and colder snowy weather to the north — and a messy wintry mix in between.

Philadelphia, on the southern edge of this storm, is likely to see a mix of snow, sleet and freezing rain as early as noon on Saturday, and icy roads will make driving treacherous, forecasters warned.

Earlier on Saturday, the storm is expected to bring heavy snow from the Dakotas to the Great Lakes. Small shifts could significantly affect where the heaviest snow falls, said Frank Pereira, a meteorologist with the National Weather Service.

Areas that are expected to see the most snow include upstate New York and New England, Mr. Pereira said.

Areas farther south, including Philadelphia and Washington, D.C., will most likely encounter sleet and freezing rain.

By Sunday night, Eagles football fans will be graced with a clear sky as the sun sets, leaving Philadelphia with no new precipitation but freezing temperatures to either celebrate or mourn the Super Bowl outcome.

Isabella Kwai contributed reporting.