Atmospheric rivers are long and relatively narrow bands of water vapor that form over an ocean and flow through the sky, ...

An atmospheric phenomenon called a Pineapple Express is ... It's a type of atmospheric river that forms a long, narrow tract in the Earth’s atmosphere. This jet stream gathers moisture from ...

Accuweather meteorologists predict this atmospheric phenomenon could bring strong winds, heavy rains and landslides. More:Atmospheric river will ... when the El Niño weather pattern is in force ...

What is an atmospheric river, and how does it affect the Western U.S.? This can, at times, create some extreme weather conditions ... used to this sort of phenomenon. You can see how this week's ...