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 ...

Downtown San Francisco was drier, but it still had a big day. The area recorded 2.53 inches on Tuesday, its highest daily ...

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

The storm system that cut a path from Kentucky to Maryland and points farther north on Tuesday brought more than 14 inches ...

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

Another storm will impact Northern California starting Thursday morning. That event is forecast to be somewhat less impactful than the high winds and mudslides on Tuesday that caused a home to ...

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 ...

An expert at the Scripps Institution of Oceanography explains the weather phenomenon that can wreak havoc across California.

Areas charred by last month's wildfires in Southern California now face a new threat from a powerful, but fast-moving Pacific ...

A new rain storm is bearing down on California, including fire-ravaged Los Angeles, where residents are bracing for the possibility of mudslides and landslides.

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