The definition: An atmospheric river (AR) is a long plume of moisture that stretches from the tropics or subtropics into ...

At atmospheric river continues to slam portions of California Tuesday, with multiple inches of rain expected until Wednesday ...

The storm brought heavy rain and high-elevation snowfall to Northern California over the weekend, and a similar one is ...

Heavy rain is hitting the Bay Area and coastal areas this week as an atmospheric river moves through Northern California.

While the wet weather may bring an end to a devastating run of wildfires in the state, it could also cause flooding and other ...

AUSTIN (KXAN) — The term “atmospheric river” has become more common in recent years, as it clearly describes a unique weather phenomenon. An atmospheric river is essentially a narrow band of ...

Pineapple Express has drenched Northern California in the last few days—but what exactly is it? How common is it? Also, go ...

Parts of northern California could see up to a foot of rain, but Phoenix will remain dry and warmer than usual.