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

Southern California's strongest atmospheric river storm of the winter is arriving Thursday, and it's expected to bring significant flooding to roads and a high risk of landslides. Here's what you need ...

Snow and ice in whiteout conditions contributed to a pileup of as many as 30 cars on a major highway connecting Oregon and ...

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 ...

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

An atmospheric ... Russian River in Sonoma County. In addition, the gusty winds caused thousands of power outages across the Bay Area, and tens of thousands of outages across the Pacific Gas ...

Torrential rains from a potent atmospheric river soaked nearly the entire state of California Thursday, triggering flash ...

Following a brief lull in the stormy pattern, California residents are on track to be doused by another atmospheric river, AccuWeather ... Locations farther south like Los Angeles are facing ...