The NWS notes that tule fog, a special kind of radiation fog, occurs each winter in the Central Valley of California. The Weather Network, a Canadian weather information service, says tule fog is simply radiation fog with a special name. Either way, it's radiation fog that settles in the Central Valley during the year's cooler months.

An unusual “atmospheric phenomenon” was visible in satellite imagery across Northern California and the Central Valley.

Norovirus levels are increasing across California, and the rise is especially notable in the San Francisco Bay Area and L.A., according to state officials.

Gov. Gavin Newsom said California's redistricting would counter Texas' rare mid-decade redistricting push. That doesn't mean California is turning back after a federal court in Texas blocked the state's recently redrawn congressional map from going into ...