Winter Weather Advisoriesare issued when snow, blowing snow, ice, sleet, or a combination of these wintry elements are expected, but conditions should not be hazardous enough to meet warning criteria.

A winter storm warning is for storms where heavy snow of at least 6 inches in 12 hours or 8 inches in 24 hours is expected. It can also be for storms where at least a half-inch of sleet ...

The warning was issued for parts of Colorado, Utah and Montana. The winter storm was expected to bring heavy snow and strong winds to mountain areas across the Western states.

The NWS issues a Winter Storm Warning usually 12 to 24 hours before snow, heavy freezing rain or heavy sleet begins. Winter Storm Watches are typically issued 12 to 48 hours before the start of a ...

A winter storm warning is the most severe. It means that meteorologists have high confidence that a winter storm will produce heavy snow, sleet or freezing rain and cause significant impacts.

This page recaps the weather and forecast for Wednesday, Dec. 21. Click here for live updates on the weather forecast and storm outlook across the US on Thursday, Dec. 22. Winter has arrived.

A winter storm warning is the most severe and means meteorologists are confident a winter storm will produce heavy snow, sleet or freezing rain that poses a significant risk to people's lives.

A winter storm warning is the most severe and means meteorologists are confident a winter storm will produce heavy snow, sleet or freezing rain that poses a significant risk to people's lives.

Watch: NOWCAST streaming newscasts Normally, a Winter Storm Watch will be issued ahead of the storm. The issuing usually comes at least 24 hours in advance.