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

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

Snow and ice in whiteout conditions contributed to a pileup of more than 100 cars on a major highway connecting Oregon and ...

A strong Pacific storm with an atmospheric river will continue to pummel California ... diminishing to showers from north to south. Friday: Showers will linger over much of the state, before ...

An atmospheric river was pummeling Southern ... of Transportation said it was shuttering part of the Pacific Coast Highway, a major north-south state route, due to heavy flooding and mudslides.

Snow and ice in whiteout conditions contributed to a pileup of more than 100 cars on a major highway connecting Oregon and ...

While most look for ways to avoid the steady rain falling from atmospheric rivers ... it feeds into the Feather River, is also affected by the Middle and South Yuba rivers, which feed into ...