It was the first-ever tornado warning for San Francisco, but not the first tornado, cited CBS News Bay Area meteorologist Paul Heggen. The National Weather Service issued the warning for northern San ...

A rare tornado in northern California over the weekend did a lot of serious damage and left several people hurt.

It was the first-ever tornado warning for San Francisco, but not the first tornado, cited CBS News Bay Area meteorologist Paul Heggen. The National Weather Service issued the warning for northern ...

For the first time in recorded history ... The National Weather Service in the San Francisco Bay Area did not find evidence of a tornado after a survey. The damage instead was consistent with ...

A potent winter storm targeting Northern California this weekend brought what appears to be the first official tornado warning on record for San Francisco on Saturday morning. The National Weather ...