As millions of Americans hunker down for the winter storm, 19 states and Washington, D.C., have declared states of emergency.

The midweek storm could bring "a quick-hitting bout of snow," an AccuWeather meteorologist said.

Track everything from current conditions, forecast timing and potential impacts from the winter storm and latest arctic blast here.

A major winter storm is currently affecting New York, bringing heavy snow, sleet and strong winds across much of the state.

Millions of Americans are already under an inclement weather warning or state of emergency. Here’s how to follow the nor’easter’s projected path. America is on the cusp of its first major winter storm of the new year.

A winter storm could bring snow, strong winds and coastal flooding to parts of Massachusetts from Sunday into early Monday.

Heavy snow, strong winds and plunging pressure from Storm Gianna are creating some of the worst aviation conditions of the season.

Snow started falling across New Jersey right on schedule early Sunday, with the heaviest snowfall along with a mix of sleet and freezing rain in some areas expected this afternoon. The National Weather Service made some final adjustments to forecast maps in its final forecast briefing for the massive winter storm.