An atmospheric river is essentially a narrow band of Pacific moisture, water vapor, that is funneled into a long narrow flow.

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

In the northern Sierra Nevada, snow will fall in feet — not inches. And in the northern California Coastal Range, a general 5 to 10 inches of rain is expected to fall.

AccuWeather meteorologist Bernie Rayno said: “This atmospheric river will unleash the most rainfall Northern California has seen so far this year. “Rounds of intense rain could trigger landslides and ...

The Pineapple Express is a type of atmospheric river— a narrow, fast-moving "river in the sky" that transports significant ...

Eight to 12 inches of rain expected across parts of Northern California through Tuesday, with an Local StormMax™ of 24 inches. Heavy rainfall from the atmospheric river will not impact ...

Parts of northern and central California saw more than two inches of rain Tuesday as Southern Californians face rain through ...

Weather systems that affect the West Coast of the United States often have their origins in the northern Pacific Ocean. This is because the jet stream usually flows in a general west-to-east fashion.

Happy weekend, Utah! We have a dry set up in southern Utah for the weekend, while a moisture-rich storm targets the northern half of the state.

Back-to-back atmospheric river storms are set to hit Los Angeles County this week — giving the region much-needed moisture ...