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

Days after an atmospheric river brought record-setting rainfall to California, the state is in the crosshairs of another rainy storm system.

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

The Bay Area saw significant storm impacts Tuesday as an atmospheric river brought heavy rain, urban and river flooding, and ...

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

Another storm will impact Northern California starting Thursday morning. That event is forecast to be somewhat less impactful ...

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

The atmospheric river storm hitting Northern California brought heavy rain, flooding and mudslides to the San Francisco Bay Area on Tuesday. In the mountains, the National Weather Service has issued ...

Forecasters say 'Pineapple Express' storm will probably be beneficial for Los Angeles and Ventura counties, helping to reduce ...

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

In Santa Barbara County, a “possible sinkhole” closed part of Highway 1 south of Lompoc as an atmospheric river storm hit the ...

An atmospheric river brought additional rain, strong winds, and flooding to the Bay Area Tuesday, with an increasing chance ...