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

An atmospheric river is essentially a narrow band of Pacific moisture, water vapor, that is funneled into a long narrow flow. These rivers transport tropical moisture to higher latitudes ...

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

The Nashville May 2010 flood was found to have had a contribution from an atmospheric river which began in the eastern tropical Pacific basin. - An AR even chipped its moisture into the infamous ...

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

It's not only a California soaking, but also lowland snowfall for the Pacific Northwest. Here's our latest forecast.

Heavy rain and snow will hit Northern California throughout most of this week as an atmospheric river moves through.

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?

The storm that pummeled California this week was fueled by an atmospheric river, a plume of moisture that extended over the Pacific to near Hawaii. Heavy rain and gusty winds that began hitting ...

"The Pineapple Express is an atmospheric river which has its origin in the tropical Pacific," said AccuWeather Senior Meteorologist Alex Sosnowski. Since the pineapple express starts thousands of ...