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 ...

Weather researchers prepare to launch a radiosonde on a weather balloon into the sky Monday, Feb. 3, 2025, amid several waves of an atmospheric river that ... 2023 over the Pacific Ocean.

A strong Pacific storm with an atmospheric river will continue to pummel California with a threat of flooding rain as feet of snow piles up in the Sierra Nevada through early Friday morning.

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 ...

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 ...

Mud covers Pacific Coast Highway ... into the arms of the helicopter rescuer," the fire authority said. The atmospheric river dumped 6.34 inches of rain in Los Angeles County, prompting mudslides ...

An atmospheric river – the second to wallop the state ... several measures to mitigate the potential for mudslides in Pacific Palisades, an affluent neighborhood tucked between the San Gabriel ...

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 ...

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 ...