A map from AccuWeather shows that the areas anticipating the heaviest snow include Lassen Park, Donner Pass, Bear Valley, Tuolumne Meadows, and Mammoth Lakes with 2 to 4 feet. Echo Summit could see 1 ...

Devastating, life-threatening floods have already started in some states as an atmospheric river causes heavy rainfall.

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.

The blue icons plotted on the map of estimated rainfall ... The biggest concern now is a potent atmospheric river of moisture that has already soaked Northern California the last couple of days.

An atmospheric river is set to strike ... and hazardous travel conditions due slick roads. Forecast maps from the agency ...

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

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 ...

Forecasters warn of dangerous conditions as another powerful atmospheric river takes aim at California. While these storms are dreaded for the damage they can cause, they are also essential to the ...