A powerful atmospheric river ... Getty Images A sign warns drivers of flooding on Highway 101 in Corte Madera, Calif., on Nov. 21. Several flood warnings are in effect in Northern California.

The past six months have proven to be a tale of two Californias when it comes to atmospheric river events. While Northern ...

LOS ANGELES – A powerful atmospheric river storm is pounding parts of California with torrential ... BEFORE AND AFTER IMAGES SHOW THE EXTENT OF WILDFIRE DAMAGE AROUND LOS ANGELES The Santa ...

Atmospheric river storms are drought busters in California, dumping huge amounts of rain in narrow corridors within short periods of time. The ongoing storm slamming Los Angeles, the nation's ...

SACRAMENTO, Calif. - A barrage of atmospheric river events that swept across California during the winter and spring has left ...

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 ...

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.