Vigilance and preparation are important, say forecasters at the NWS, as wintry weather brings hazardous travel conditions.

As Donald Trump returns to the White House, he has built the most formidable foundation of Republican electoral strength ...

An inch or more of rain fell across most of Northern California as ... proliferated throughout California, Arizona, Utah, Colorado and New Mexico. The map uses six classifications to describe ...

A SWPC map reveals that the northern lights ... resulting in the aurora being spied as far south as Arizona, Colorado and Mexico. The northern lights are usually triggered by huge clouds of ...

There are approximately 90 of these across the US, located in states such as Alabama, Arizona ... an alarming map. Less impacted areas might include rural parts in Idaho, Maine, Northern ...

Researchers from Harvard T.H. Chan School of Public Health have assembled a national database with millions of multi-day ...

A polar vortex is bringing arctic air into the country next week. Forecast maps show when freezing temperatures will sweep ...

and southern Arizona. However, snowfall is unlikely in parts of Texas that are not in the northern regions, and any areas that do receive snow will likely experience only a brief period of ...

A La Niña winter just started, but it isn't expected to last long. National forecasters are already looking ahead to the spring season.

Meanwhile, the opposite is true for a select few northern states ... Southern California, Arizona, New Mexico and Texas. The predictions for the middle band of the U.S. are more of a toss-up. The ...