Days after an atmospheric river brought record-setting rainfall to California, the state is in the crosshairs of another rainy storm system.

The Pineapple Express is an atmospheric river in the sky that comes from the Pacific near Hawaii. When it hits the California ...

Parts of northern California could see up to a foot of rain, but Phoenix will remain dry and warmer than usual.

These "rivers in the sky" have been responsible for as much as 65% of the West's extreme rain and snow events, a 2017 study said. AccuWeather warned of possible flooding, avalanches, strong ...

The rain will be "generally beneficial" in the Los Angeles area, but there is a small risk of burn scar debris flows.

Impact from a moisture-laden storm is expected to persist in the San Francisco Bay Area through Friday, with more rain likely ...

While driving home, Ari Shulman said a "spray of sparks" in the sky caught his attention as he watched in horror the midair ...

Atmospheric rivers are long, narrow regions of water vapor in the atmosphere, like a river in the sky. These systems gather moisture from the tropics near the equator and move it toward the poles.