The term “atmospheric river” was coined in 1994 and has since quickly gained popularity. But what does it really mean?

What is an atmospheric river, and how does it affect the Western U.S.? This can, at times, create some extreme weather conditions that range from flooding rain and mudslides to feet of snow and ...

An atmospheric river is slamming portions of California, with multiple inches of rain expected to drench the area until the storm runs out of moisture Wednesday morning, forecasters say.

What is a Pineapple Express? It's a type of atmospheric river that forms a long, narrow tract in the Earth’s atmosphere. This jet stream gathers moisture from the tropics near the equator and ...

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 ...