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 ...

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

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

The National Weather Service initially sent the warning around 5:56 a.m. for northern San Mateo County and portions of ...

A strong atmospheric river drenched northern California with heavy rains and damaging wind gusts Saturday, leaving well over ...

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

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

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

A storm and wind gusts of up to 60 mph (96 kph) prompted the first tornado warning in San Francisco and caused some damage in ...

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