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

A rapidly strengthening storm is expected to develop off the Southeast coast this weekend amid a deadly cold outbreak, bringing snow and strong winds just days after a historic winter storm blasted large parts of the East Coast.

That uncertainty is not unusual at this early stage. Forecasters rely on a blend of weather models — computer simulations used to predict future conditions — and they are more confident in a forecast when most of those models are consistent with one another. The closer the storm is, the more confident forecasters become.

Add Yahoo as a preferred source to see more of our stories on Google. A pair of storms sweeping from Texas to the Great Lakes over the weekend could bring travel problems due to snow, flooding rain and severe weather and threaten lives and property.

LAFAYETTE, La. (KLFY) — Scattered storms are likely today and tonight and there is a low risk for severe weather. A few storms today could produce damaging winds, large hail, and/or and isolated tornado. The afternoon will be mostly cloudy, very warm ...

Some homeowners in central Illinois were dealing with damage they didn't expect in December, after a tornado touched down on Sunday amid severe storms. The National Weather Service on Monday confirmed an EF-1 tornado with wind speeds of about 90 mph ...

Winter storm: Death toll rises as winter storm continues dumping snow across the U.S Heavy snow, sleet and freezing rain are slamming large parts of the U.S. as the dangerously cold weather causes major power outages and travel disruptions.

The warnings come ahead of a "significant" snow event accompanying a winter storm set to hit the U.S. this weekend.