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

Footage shot on Thursday shows the devastation caused by an atmospheric river drenching Southern California, particularly in ...

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

A prolonged atmospheric river event is set to continue delivering moderate to heavy rain across the Pacific Northwest ...

Places like California, Oregon, Washington, Idaho, Utah and Nevada are (somewhat) used to this sort of phenomenon. You can ...

Heavy precipitation is falling mostly in mountain areas. A flood watch in also in effect for the coast of central California, ...

The strongest atmospheric river of the season left roads submerged in sludge and created conditions for mudslides on wildfire ...

Just a month after fierce Santa Ana winds propelled a firestorm across Los Angeles County, residents faced another extreme ...

Snow and ice in whiteout conditions contributed to a pileup of as many as 30 cars on a major highway connecting Oregon and Idaho, reportedly injuring several people, as a winter storm descended on the ...

Here's the latest forecast for an upcoming winter storm that forecasters hope could finally lift Los Angeles County from the ...

Parts of Pacific Coast Highway remained closed due to heavy flooding and mudslides in Southern California, according to state officials.

Weather balloons and “hurricane hunter” planes aid the science of understanding California’s atmospheric rivers.