Forecasters expect the plume of moisture to move across California in the coming days, with rain arriving in Southern California and the Great Basin tonight. Most of Northern and Central California are under a Slight Risk (level 2/4) of excessive rainfall from Tuesday into Christmas Eve. Get wet while you can. Then stay high and dry.

Rounds of rain, snow and wind are set to slam California starting Sunday, elevating flash flooding concerns that start across portions of Northern California and last through the rest of the week.

Eerie green swirls were seen off the coast of Northern California recently in NASA satellite photos as a result of a large colony of phytoplankton.

A shark bit a surfer on the hand near Bodega Bay along the Northern California coastline, sheriff’s officials reported. A surfer at North Salmon Creek Beach on the Sonoma County coast reported being bitten on Friday, Dec. 12, the county sheriff’s office said in a news release.

Heavy rain and flooding problems experienced in the Northwest in recent weeks from atmospheric rivers will shift farther south into California through Christmas Day with major travel disruptions and safety concerns.

Northern California saw the first measurable rain in weeks on Wednesday, the start of a series of storm systems expected to bring a "firehose of moisture" to the Bay Area and Central Coast into next week and possibly disrupt Christmas travel plans,

Waves were reported along a wide swath of the Northern California coast, including in San Francisco. The rest of the state was under a lesser tsunami advisory. By Yan Zhuang Laurel Rosenhall Jesus Jiménez Amy Graff and Heather Knight Tsunami waves hit ...

Near-shore tsunamis — those triggered by earthquakes just offshore — could pose a particularly dire risk for heavily populated coastal communities. Depending on the strength and location of an earthquake, life-threatening waves could approach the ...