Many atmospheric river events are weak. But the powerful ones can transport extraordinary amounts of moisture. Studies have ...

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 ...

SAN FRANCISCO – A series of three atmospheric river storms are soaking Northern California this weekend and into the week ahead in the form of valley rain and mountain snow, with the potential ...