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

There is now a 30% chance of intense rain between Feb. 12 and 15 in Los Angeles, Ventura, Santa Barbara and San Luis Obispo ...

Impact from a moisture-laden storm is expected to persist in the San Francisco Bay Area through Friday, with more rain likely ...

The definition: An atmospheric river (AR) is a long plume of moisture that stretches from the tropics or subtropics into ...

A much wetter stretch is ahead from California to Washington as multiple systems crash into the Pacific Coast. Here’s how ...

A Pineapple Express forms when the jet stream dips south into the tropical Pacific near Hawaii, scooping up warm, moist air ...

An atmospheric river brought additional rain, strong winds, and flooding to the Bay Area Tuesday, triggering evacuation ...

After an atmospheric river doused the North Bay Tuesday, forecasters say more rain will return to the region Thursday and ...

Hang onto your umbrellas: An “impressive” atmospheric river is set to deliver ... A plume of moisture from the South Pacific, near the vicinity of Hawaii, has been producing steady ...

Malibu’s Pacific Coast Highway, which just reopened after last month’s devastating Palisades Fire, is closing again Tuesday ...

Anderson Creek floods property along Balls Ferry Road south of Anderson on Monday, Feb. 3, 2025. An atmospheric river moving over ... is bumping against cold Pacific Northwest air, causing these ...