On a FEMA color-coded hazard map, Alameda, Santa Clara and Contra Costa counties are shaded dark red, indicating an area with ...

PFAS concentrations in Los Angeles and Santa Ana rivers exceed federal safety limits, posing serious health risks to ...

California lawmakers are asking President Donald Trump to declare a state of emergency over pollution of the Tijuana River ...

Have you ever wondered what it feels like to stand under a sky that suddenly turns into a river? For millions living along the West ... Read more The post What Atmospheric Rivers Mean for the West ...

Editor's note: This page reflects news from Wednesday, Feb. 12. For the latest updates on the atmospheric river in California, read USA TODAY's coverage for Thursday, Feb. 13.

Another atmospheric river is expected to bring heavy rain to most parts of California this week, raising concerns over flooding on the heels of an earlier system that broke daily rainfall records ...

The atmospheric river to make landfall this week is between a 3 and a 4 on the scale. This means it will be mostly beneficial, thanks to our dry soils, but can provide some hazards including flooding.

When a strong atmospheric river points towards Southern California, we can see significant rainfall. Meteorologist David Biggar shows how common they are, and how they can impact our weather.

A high-end atmospheric river is continuing to pummel Northern California on Friday as it slowly meanders through the region on the tail end of a historic bomb cyclone that developed off the ...

An atmospheric river carries water vapor from the tropics and, when it makes landfall, can bring a vast amount of rain and snow; in Oct. 2021, for instance, San Francisco got 750% more rainfall ...

A person walks along a flooded street as a powerful long-duration atmospheric river storm, the second in less than a week, impacts California on February 4, 2024, in Santa Barbara, California.