A series of small earthquakes rattled the San Francisco Bay Area late Thursday morning, adding another challenge to what is ...

Many atmospheric river events are weak. But the powerful ones can transport extraordinary amounts of moisture. Studies have ...

Parts of Pacific Coast Highway remained closed due to heavy flooding and mudslides in Southern California, according to state officials.

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

New research at NAU looks at faster warming in the Arctic, and highlights concern about risks to the U.S. of a political ...

The North Bay is slated to bear the brunt of the atmospheric river headed for the Bay. Though it will rain all weekend, the National Weather Service says the heavy rains come Monday and Tuesday ...

Scientists have identified a new threat that could disrupt the commercial airspace as at least three deadly crashes have ...

Pineapple Express has drenched Northern California in the last few days—but what exactly is it? How common is it? Also, go ...

Some of us remember the first Earth Day, Saturday, April 22, 1970. We pulled old bedsprings and tires out of local rivers and urged a ban on phosphates that fueled weed growth in streams and ...

Several roads in Sutter County were closed due to flooding, including three that cross the Sutter Bypass, which is once again filling with overflow from the Sacramento River to be transported across ...

At atmospheric river continues to slam portions of California Tuesday, with multiple inches of rain expected until Wednesday ...

From the warmest year on record to an arctic blast and even snow, marine biologists are concerned about weather and climate ...