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

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

The definition: An atmospheric river (AR) is a long plume of moisture that stretches from the tropics or subtropics into higher latitudes, often thousands of miles long. These thin ribbons of humid ...

One of the more potent storm systems so far this season is setting up to bring significant widespread rainfall and windy conditions to much of San Diego towards the middle of the week.

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.

While the wet weather may bring an end to a devastating run of wildfires in the state, it could also cause flooding and other hazards.

Both are swirling counterclockwise, sweeping robust moisture along from the central tropical Pacific and slingshotting it nearly 3,000 miles to the northeast. The ongoing atmospheric river will be ...

JUST CONNECTED TO THIS BIG TAP, THIS ATMOSPHERIC RIVER THAT CONNECTS ALL THE WAY DOWN TO THE TROPICAL PACIFIC. NOW, THERE ARE ...

The snow level will increase Friday night into Saturday. A rain-snow mix is likely over Donner Summit Friday night into early Saturday morning. That may change back over to wet snow for the summit on ...