Following an unusually dry January, a powerful atmospheric river known as the ‘Pineapple Express’ has ... and its humidity falls — sometimes to less than 10%. Subscribe to our UPSC newsletter and stay ...

An atmospheric river event is forecast to rainfall, snow, and the potential for flooding to parts of California this week.

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

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

Parts of northern California could see up to a foot of rain, but Phoenix will remain dry and warmer than usual.

An atmospheric river is slamming portions of California, with multiple inches of rain expected to drench the area until the storm runs out of moisture Wednesday morning, forecasters say.

Heavy rain is hitting the Bay Area and coastal areas this week as an atmospheric river moves through Northern California.

A stronger atmospheric river is set to hit Northern California on Monday and then hit Los Angeles County on Tuesday, aiding hopes of a more definitive end to a devastating fire weather season for ...

While the wet weather may bring an end to a devastating run of wildfires in the state, it could also cause flooding and other hazards.

Atmospheric rivers, also described as "rivers in the sky," cause more than 80 percent of all flooding damage across the West ...