Freeze Warning and Frost Advisory issued for parts of the Bay Area by the National Weather Service San Francisco.
Learn about the National Weather Service's new approach to communicating cold weather risks and how it affects you.
Freeze warnings, frost advisories and cold weather advisories from the National Weather Service (NWS) were in place for 18 counties in California early on Wednesday morning.
Nearly a dozen states received hazardous weather warnings from the National Weather Service as of early Wednesday.