The definition: An atmospheric river (AR) is a long plume of moisture that stretches from the tropics or subtropics into ...

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

Places like California, Oregon, Washington, Idaho, Utah and Nevada are (somewhat) used to this sort of phenomenon. You can ...

A major atmospheric river storm is barreling toward California, raising the specter of damaging landslides and flooding ...

Here's the latest forecast for an upcoming winter storm that forecasters hope could finally lift Los Angeles County from the ...

An atmospheric river is expected to bring three major storms with significant rain, snow and wind to Northern Nevada for the next several days. But what is an atmospheric river? Here's a look at ...

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

It's a type of atmospheric river that forms a long ... responsible for as much as 65% of the West's extreme rain and snow events, a 2017 study said. AccuWeather warned of possible flooding ...

An atmospheric river is a weather feature that can be beneficial and crucial, but can also be a damaging event - particularly for those near the West Coast of the United States. The definition ...

An atmospheric river is a long, narrow band of moisture that oftentimes comes ahead of a storm system. It's a big source of moisture for the Western U.S. and, specifically, the Sierra Nevada and ...