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

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 ...

Both reservoirs have been steadily rising since November, after the start of California's water year in October. A series of ...

SAN FRANCISCO – A series of "atmospheric river" storms aimed at Northern California ... The rainfall was so intense that in one dramatic example, a mudslide caused an entire house to slip ...

Other examples of atmospheric rivers around the ... The Nashville May 2010 flood was found to have had a contribution from an atmospheric river which began in the eastern tropical Pacific basin.