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 ...

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

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

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

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

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

On Saturday, meteorologists with the National Weather Service went to San Francisco to assess storm damage, then pivoted to ...

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

A powerful winter storm battered the Bay Area Friday night into Saturday, causing widespread issues, power outages and downed ...

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