Much of the nation east of the Rocky Mountains is hunkered down for what could be the worst winter storm of the season.

A chilling polar vortex is set to bring snow and ice to the South and East this week. We show where.

Picture this: you're checking tomorrow's weather for the tenth time this week, and each time the forecast has shifted. What started as sunny skies morphed into scattered showers, then back to partly ...

The jet stream, or any wind, is the result of differences in surface temperature. In simple terms, warm air rises, creating low pressure, and cold air sinks, creating high pressure. Wind is the ...