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

Torrential rains and mountain snow began moving into California on Wednesday, bringing a high risk of flooding, landslides in burn-scar areas and power outages.

The California Office of Emergency Services is deploying resources across California ahead of an atmospheric storm system set ...

While much of the day Wednesday will be dry, major changes are heading to Northern California, bringing rain, wind and heavy snow that will lead to whiteout conditions in the Sierra.

An atmospheric river is forecast to bring torrential rain to California this week, threatening parts of the state with flash ...

Flood watches are posted up and down the California coast as an atmospheric river will bring torrential rain to many areas in need of moisture but too much rain in burn scar areas could lead to ...

An atmospheric river is moving into Southern California, meaning the region could get hit with the heaviest rainfall of the season.

An atmospheric river is expected to bring torrential rain to California this week, threatening parts of the state with flash ...

Another round of wet and windy weather was set to run through the Bay Area beginning Tuesday evening, with the storm triggering multiple warnings and advisories.

Rain is about to return to drought-stricken Southern California as an atmospheric river douses the state, bringing a new danger to the areas ravaged by January's deadly infernos. The massive burn ...

An incoming atmospheric river shows the potential for several inches of rain, following months of below average rainfall.

An approaching atmospheric river will provide relief after a remarkably dry year, but it will also heighten the risk of ...