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 ...

It's a type of atmospheric river that forms a long ... In the West, atmospheric rivers approach from the Pacific Ocean, where they’ve collected tremendous amounts of water.

It's not only a California soaking, but also lowland snowfall for the Pacific Northwest. Here's our latest forecast.

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

A prolonged atmospheric river event is set to continue delivering moderate to heavy rain across the Pacific Northwest, with the Portland area bracing for a cold week ahead. Showers are expected to ...

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 expected to return for Northern California and the Pacific Northwest starting Thursday, right before the start of the morning commute. This storm is forecast to bring ...

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 first in what’s expected to be a series of three atmospheric river storms has arrived in ... particularly concerning prospect in areas of Pacific Palisades and Altadena devastated by the ...