A unique weather situation is shaping up for late October. Here's what an atmospheric river means and why it matters.

An atmospheric river storm hit the Los Angeles area in the early hours of Tuesday, bringing the risk of flooding, ...

One storm isn’t enough to change those fortunes, but Ralph says it will help. The storm dumped more than two inches of rain ...

Satellite images from NOAA and NASA show California and the Sierra Nevada mountains before and after the recent snowstorm, ...

Heavy rainfall will have the potential to produce flooding west of the Cascades in Washington and Oregon,” the CPC said.

Atmospheric rivers are defined as rivers of water vapor in the sky. They can bring heavy rain or snow storms upon landfall and usually last 3-7 days.

A series of storms will bring a deluge of moisture into the Pacific Northwest later this week, sparking not only a threat for ...

Time-lapse videos from the ALERTCalifornia and UC San Diego show snow brought on by the first major winter storm of 2025 in the Sierra Nevada.

October atmospheric river could bring heavy rain and high-elevation snow to the Sierra, affecting travel along I-80 near Reno ...

This videodisc explores how Scripps Institution of Oceanography scientists are developing new instruments for studying interactions between oceans and atmosphere. They are trying to understand the why ...