MORE: How an atmospheric river is impacting the West Coast. A man makes the long walk down the Folsom Lake boat ramp that is normally underwater in Folsom, Calif., Oct. 3, 2022.

An atmospheric river is poised to open the floodgates, with torrential rains and gusty winds expected to thrash the West Coast starting Wednesday. California is expected to bear the brunt of the ...

The West Coast’s rainy season has arrived in force, as an atmospheric river carrying moisture from the tropics joins a bomb cyclone off the Pacific Northwest coast. Heavy, wet snow began falling ...

Atmospheric river sweeps down West Coast with flooding, mountain snow Recent rainfall has left the ground saturated, heightening the risk of flooding and landslides December 30, 2022 More than 2 ...

An atmospheric river is a relatively narrow channel of wind, hence the "river," that transports water vapor from the tropics to the West Coast, where it's producing rain and heavy winds.

An atmospheric river will continue to impact the West Coast over the next 24 hours. A record amount of moisture is hitting the Pacific Northwest as the powerful system continues to bring heavy ...

An "atmospheric river" is dumping a "pineapple express" upon the U.S. west coast, but no fruits are involved in this process. Heavy rain and snow are visible in Earth-gazing satellites on Thursday ...

Annually, 30% to 50% of the West Coast's precipitation occurs with just a few atmospheric river events. What is a bomb cyclone? Bomb cyclones are low pressure systems that undergo what ...

An atmospheric river is set to bring heavy rains and a risk of localized flooding to the West Coast. Cars languish in floodwaters in Planada, California, in this archive image from January 2023.

Track the Latest Atmospheric River to Hit the West Coast By William B. Davis , Madison Dong , Judson Jones and Bea Malsky Updated July 8, 2025 at 3:22 p.m. E.T.

The West Coast's rainy season has arrived in force, as an atmospheric river carrying moisture from the tropics joins a bomb cyclone off the Pacific Northwest coast. Heavy, wet snow began falling ...