The storm will usher in warm temperatures, which will contribute to the flooding risk from heavy rain as snow melts.

An expert at the Scripps Institution of Oceanography explains the weather phenomenon that can wreak havoc across California.

Atmospheric rivers are long and relatively narrow bands of water vapor that form over an ocean. Some get the nickname ...

As the Bay Area prepares for another round of storms, a new Stanford study explains just how much damage atmospheric rivers ...

Heavy rain is hitting the Bay Area and coastal areas this week as an atmospheric river moves through Northern California.

Another atmospheric river is expected to bring heavy rain to most parts of California this week, raising concerns over flooding on the heels of an earlier system that broke daily rainfall records ...

A mostly dry and cloudy day around Portland will give way to a few evening rain showers. Late Friday evening rain showers mark the start of the atmospheric moisture that’s set to impact the Pacific ...

The weather phenomena are common for California winters, but they could cause dangerous debris flows or mudslides in recently ...

When they hit land they can cause heavy rains and snow. Here's a look at the phenomenon: What is an atmospheric river? Atmospheric rivers are long and relatively narrow bands of water vapor that ...

The first in what’s expected to be a series of three atmospheric river storms has arrived in California. Forecasters are hopeful the winter storms might finally lift Los Angeles County from the ...