A winter storm snarled travel and disrupted daily routines along the East Coast on Monday, leaving a blanket of snow over much of the Mid-Atlantic and Northeast.

The precipitation paused in some areas around midafternoon, including in Washington, D.C., but was expected to resume in the late afternoon and evening with some additional accumulation, according to Zack Taylor, a meteorologist with the National Weather Service. The total snowfall in the Washington area could rise to 12 inches by Tuesday morning, forecasters said.

The storm has disrupted several modes of transportation. More than 7,000 flights in the United States had been delayed or canceled as of Monday afternoon, including the majority of those scheduled at Ronald Reagan Washington National Airport. Amtrak canceled dozens of Amtrak trains in the busy Northeast corridor and other affected states, and driving conditions were dangerous from West Virginia to Delaware.

Around 300,000 people in the storm’s path, from Missouri to Virginia, were without power on Monday afternoon, according to the utility tracking website poweroutage.us.

Several states — including Arkansas, Kansas, Kentucky, Missouri, Virginia, West Virginia, Maryland — as well as Washington, D.C. and parts of New Jersey, declared states of emergency.

The storm swept across the Midwest over the weekend, and an additional two to four inches of snow is still likely to fall in parts of the Ohio Valley, where travel disruptions continue.

Note: Forecast temperatures are as of 7 a.m. Eastern each day. Forecast data in some areas may be unavailable. Data shown only for the contiguous United States.

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