NEW YORK — Millions along the Interstate 95 corridor on the Northeast coast will see their first significant winter storm of the season this weekend, as a fast-moving system takes advantage of freezing temperatures brought by another invasion of the polar vortex .

The Northeast is getting ready for its first major snowstorm of the season, just as the Midwest is beginning to escape snow and ice that snarled travel after the Thanksgiving holiday.

Millions of Americans living on the East Coast could see their first accumulating snowfall of the season this week.

The Northeast is seeing its first major winter snowstorm arrive just as the Midwest begins to escape snow and ice that snarled travel after the Thanksgiving holiday.

Wintry conditions sweep across the U.S., producing below-average temperatures, winter weather watches and flood watches.

Hazardous winter weather was expected through early Wednesday, according to forecasters. The storm had dropped a wintry mix of precipitation across the Midwest overnight.

A system expected to drop 6 inches of snow or more from Pennsylvania to Maine could tie up the Tuesday evening commute, the National Weather Service says.

The first major storm of the winter covered parts of the Northeast and mid-Atlantic with snow and ice Tuesday, making roads hazardous, disrupting travel and closing schools as some areas braced for several inches of heavy snowfall.

Some parts of northern New England were expecting up to 10 inches of snow. In Philadelphia, a "trace" was detected at the airport.