At least 18 people have died in what the National Weather Service (NWS) has called "catastrophic flooding" that hit the South ...

Devastating, life-threatening floods have already started in some states as an atmospheric river causes heavy rainfall.

A rare atmospheric river is hitting a large portion of the Midwestern and Southern U.S. this week, causing significant floods.

When a bomb cyclone meets an atmospheric river, the result is like an out-of-control fire hose A powerful storm hitting the West Coast combines these weather phenomena for a wet week in many areas.

Here's an explanation of how they form, their size and potential impacts. WHAT IS AN ATMOSPHERIC RIVER? The weather system occurs all over the world. It starts when a large amount of water vapor ...

In the 1860s, California had to move its capital out of Sacramento because of an atmospheric river flooding. These events aren't just a California thing. They actually happen all over the United ...