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

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

The storm brought heavy rain and high-elevation snowfall to Northern California over the weekend, and a similar one is ...

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

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 ...