Forecasters said it is expected to deliver about 2 inches of rain to most Bay Area cities Thursday and Friday, 3 to 5 inches ...

Atmospheric rivers are long and relatively narrow bands of water vapor that form over an ocean and flow through the sky, ...

El Niño and La Niña are climate phenomena that are generally associated with wetter and drier winter conditions in the ...

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

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

Weather balloons and “hurricane hunter” planes aid the science of understanding California’s atmospheric rivers.

Atmospheric rivers, also described as "rivers in the sky," cause more than 80 percent of all flooding damage across the West ...

After an atmospheric river doused the North Bay Tuesday, forecasters say more rain will return to the region Thursday and ...

What is a Pineapple Express? It's a type of atmospheric river that forms a long, narrow tract in the Earth’s atmosphere. This jet stream gathers moisture from the tropics near the equator and sweeps ...

(AP) Known as an atmospheric river, the storm will begin dropping ... usually considered a benefit — on a scale devised by the Scripps Institution of Oceanography at the University of California ...

The greatest impact is expected in the North Bay, the agency said. Gov. Gavin Newsom's office said the state is preparing emergency resources due to the atmospheric river arriving this weekend in ...