Ahead of the storm’s arrival, officials in Southern California distributed sandbags, prepositioned rescue swimmers and told ...

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

Many atmospheric river events are weak. But the powerful ones can transport extraordinary amounts of moisture. Studies have ...

A storm fueled by moisture from an atmospheric will bring rain, wind and heavy snow throughout Thursday in Northern ...

The weather phenomena are common for California winters, but they could cause dangerous debris flows or mudslides in recently ...

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 ...

Heavy rain from the latest atmospheric river triggered flood warnings in several Bay Area counties and evacuations in Santa ...

An atmospheric river slammed into the Golden State overnight and is causing dangerous conditions across the entire region.

El Niño and La Niña are climate phenomena that are generally associated with wetter and drier winter conditions in the ...

Along with much-needed water to the state’s reservoirs, the precipitation also brings dangerous driving conditions and the threat of local flooding.

Just a month after fierce Santa Ana winds propelled a firestorm across Los Angeles County, residents faced another extreme ...