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

Days after an atmospheric river brought record-setting rainfall to California, the state is in the crosshairs of another rainy storm system.

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

An atmospheric river is a weather feature that can be beneficial and crucial, but can also be a damaging event - particularly for those near the West Coast of the United States. The definition ...