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

Heavy precipitation is falling mostly in mountain areas. A flood watch in also in effect for the coast of central California, ...

Atmospheric river after atmospheric river is rocking the West with relentless heavy rain and snow. This moisture, originating from Hawaii, is known as a Pineapple Express. A second storm is forecast ...

Both reservoirs have been steadily rising since November, after the start of California's water year in October. A series of ...

An atmospheric river is a long, narrow band of moisture that oftentimes comes ahead of a storm system. It's a big source of moisture for the Western U.S. and, specifically, the Sierra Nevada and ...

You may have heard meteorologists using the phrases "atmospheric river" and "Pineapple Express" when talking about wet weather in California, but what do they really mean?

A stronger atmospheric river is set to hit Northern California on Monday and then hit Los Angeles County on Tuesday, aiding ...