Atmospheric rivers are more common during the winter months, but officials are warning people not to let their guard down.

The National Weather Service said the atmospheric river would sweep down from the Pacific Northwest into Southern California from ... early Thursday and another coming late Thursday into Friday.

Such atmospheric river events are known to provide much of California's wet season rainfall, as well as its worst flooding. Flights from the West Coast to Hawaii and Asia next week may take longer ...

This storm is the first in a coming wave of atmospheric river-type storms that will affect California for the next week, raising concerns of continued flooding risks and stresses on water ...

Languages: English. The atmospheric river arrived on Tuesday. It is bringing up to four feet of snow to high elevation areas, heavy rain to Southern California and strong winds statewide.

A series of atmospheric river events during the winter and spring have caused reservoirs to swell to more than 118% than is ...

The final round of rain for the week is expected to deliver between a tenth and a quarter of an inch of rain along the coast and valleys. But don't put umbrellas away yet.

A storm that parked itself over Southern California for ... heads south over the coming days. Forecasters warn of dangerous conditions as another powerful atmospheric river takes aim at California.

Map of Sierra Nevada in California showing how an atmospheric river develops. Most atmospheric rivers are weak and do not cause damage. In fact, they can provide much-needed rain or snow.