The tornado never touched down in San Francisco. But the conditions in the atmosphere with wind speed and direction were ...

For the first time in recorded history, downtown San Francisco was issued a tornado warning on Saturday as severe storm ...

San Francisco residents were woken up by a tornado warning early Saturday morning during a powerful storm system that ...

Severe storms caused damage across northern California on Saturday, and for the first time in recorded history, the National ...

Powerful storms swept through parts of Northern California on Saturday, knocking down trees, causing widespread power outages ...

A potent winter storm targeting Northern California this weekend brought what appears to be the first official tornado ...

More than 1 million people in the Bay Area were under the brief tornado warning, which was lifted by 6:15 a.m.

The San Francisco Bay Area dealt with multiple threats as the storm swept through Saturday morning – including a brief ...

A tornado warning issued for San Francisco and parts of San Mateo County was based on radar-indicated rotation.

The National Weather Service issued San Francisco with a tornado warning on Saturday, the first in the city's history.

Less than two weeks after a tsunami warning, residents were jolted awake before 6 a.m. to consider a new potential disaster ...