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

Places like California, Oregon, Washington, Idaho, Utah and Nevada are (somewhat) used to this sort of phenomenon. You can ...

A persistent trough of low pressure has parked itself along the Pacific Northwest. As it spins counterclockwise it is pumping ...

The atmospheric river's effects are expected to last at least through Tuesday, one meteorologist told Newsweek.

An atmospheric river is expected to bring three major storms with significant rain, snow and wind to Northern Nevada for the next several days. But what is an atmospheric river? Here's a look at ...

One atmospheric river is already affecting the West right now, and at least two more are forecast to impact next week. The systems, each corridors of deep tropical moisture transported to ...