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 ...

Multiple storms sweeping through the western United States into the last weekend of 2024 will bring a heightened risk of flash flooding, damaging winds and travel-snarling snow from Northern ...

A parade of Pacific storms, accompanied by atmospheric rivers, will continue to march into the West Coast, bringing a threat of more rain. For the very latest forecast and storm recaps, click here.