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

Another atmospheric river-driven storm will impact Northern California and the Pacific Northwest starting Thursday morning. That event is forecast to be somewhat less impactful than the high winds and ...

In what has become a much-anticipated sight, the morning glory spillway at Lake Berryessa is now active after this week's ...

After weeks of dry weather, an atmospheric river event begins Friday, kicking off a dramatic flip in the forecast for Lake ...

An atmospheric river event that slammed California this week is expected to subside on Wednesday after causing some flooding, ...

Here's the latest forecast for an upcoming winter storm that forecasters hope could finally lift Los Angeles County from the ...

The wet weather fueled by an atmospheric river comes after a dry January helped ignite fires that devastated California. Here ...

AccuWeather meteorologist Matt Rinde told Newsweek: "Since there is no hard and fast definition, some events may or may not be attributed to an atmospheric river. We tend to move toward calling it ...

The wet weather fueled by an atmospheric river represents an about-face after a dry January helped ignite fires that ...

SAN FRANCISCO – A series of atmospheric river events promise to deliver heavy precipitation across Northern California and the Pacific Northwest in the form of valley rain and mountain snow with the ...

SAN FRANCISCO – A series of atmospheric river events promise to deliver heavy precipitation across Northern California and the Pacific Northwest in the form of valley rain and mountain snow with ...