Millions of Americans across four states have been told to stay indoors as overlapping emergencies, from toxic air to ...

An atmospheric river is expected to bring torrential rain to California this week, threatening parts of the state with flash floods and mudslides.

The County of Monterey wants to inform the communities of Watsonville and Pajaro that they will be testing an emergency alert on Thursday.

An active shooting threat on Monday left many students without warning when emergency alerts were sent out at California State University, Bakersfield.