Fox News Weather Center

LIVE: Officials urge Baltimore motorists to slow down as snow slicks roads

A storm unleashing snow from the mid-Atlantic to the Northeast on Tuesday will slow travel and cause delays.

The brunt of the storm will bear down on Philadelphia and New York City into the afternoon and evening. Commuters should be on alert for slippery travel, including on Interstate 95.

Up to 12 inches of snow could fall in parts of south-central Pennsylvania, western Maryland and along the Virginia and West Virginia borders.

"Bursts of heavy snow will fall across the Baltimore area at times, with the heaviest snowfall to the north and west," AccuWeather Meteorologist Ed Vallee said. "Travel along I-270 especially could become hazardous."

UPDATES: (All times are listed in EST)

10:16 a.m. EST Tuesday: Accumulating snow slowed travel in the Reston, Virginia, area:

10:02 a.m. EST Tuesday: A NWS trained spotter reports 5.5 inches of snow in Carroll County, Maryland.

9:29 a.m. EST Tuesday: Snow is starting to stick to paved surfaces in Reston, Virginia:

9:26 a.m. EST Tuesday: Frederick County Police said roads throughout the county are slick and encouraged drivers to be cautious.

8:57 a.m. EST Tuesday: Frederick County Public schools are closed due to the snow.

8:17 a.m. EST Tuesday: Snow is piling up in Frederick County, Maryland:

8:02 a.m. EST Tuesday: Baltimore Public Schools will be closed on Tuesday due to the snow.