They are responsible for producing heavy rain and snow, especially when pushed up against mountain ranges like the Cascades and Sierra Nevada. A well-known type of atmospheric river is called a ...

This story is free to read because readers choose to support LAist. If you find value in independent local reporting, make a donation to power our newsroom today. In recent years, "atmospheric river" ...

Northern California is in the middle of a dramatic weather shift. From bitter cold to widespread rain and significant Sierra snow, impacts peak through Saturday during the first major storm of the ...

Atmospheric science is rapidly evolving as new technologies, analytical tools, and theoretical frameworks enhance our ...

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 ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Qian Cao, University of California, San Diego (THE CONVERSATION) Along the U.S. West ...

A sign for a Christmas tree farm is pictured as flood waters from the Snohomish River cover Marsh Road off State Route 9 in Snohomish, Washington, on December 11, 2025. Tens of thousands of people ...

It’s been relatively dry in Seattle and western Washington for the first half of this week, but dry periods are about to become few and far between, with several atmospheric rivers on their way to ...

Atmospheric rivers are massive plumes of moisture carried across the sky that can dump heavy rains or snow over land. Here’s a look at the phenomenon: Where do atmospheric rivers come from?

An atmospheric river brought heavy rain to western Washington late Friday afternoon — the eve of Halloween. “The main threat with this system is the heavy rain, though wind gusts in the 20–35 mph ...