An expert at the Scripps Institution of Oceanography explains the weather phenomenon that can wreak havoc across California.

Atmospheric rivers are a plume of moisture that extend across the Pacific to near Hawaii. When they hit land they can cause ...

In the Western U.S., that Pacific moisture rises up the higher terrain miles inland. What is an atmospheric river, and how does it affect the Western U.S.? This can, at times, create some extreme ...

the atmospheric river is expected to "gradually settle southward through the middle of the week as multiple waves of low pressure traverse the front and bring strong Pacific moisture transport ...

The atmospheric river is being driven by a low pressure system midway between Hawaii and the West Coast, as well as a secondary low-pressure system offshore of the Pacific Northwest. Both are ...

One such storm arrived in the Pacific Northwest over the weekend ... A person walks through flood waters as a powerful long-duration atmospheric river storm impacts California on February 4 ...

While the West Coast will feel the soggy effects of an atmospheric river this week, the system won’t bring any moisture into drought-stricken Arizona. Parts of California and the Pacific ...

An atmospheric ... Russian River in Sonoma County. In addition, the gusty winds caused thousands of power outages across the Bay Area, and tens of thousands of outages across the Pacific Gas ...

Northern California received the last round of rain and snow-producing storms on Thursday evening, after the atmospheric river event on Tuesday led to at least two confirmed deaths in Sonoma ...