The warning led to a flurry of social media posts from residents who were woken up by the alert on their cell phones. It was being reported as the first-ever tornado warning issued for San Francisco.

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

SAN FRANCISCO – A strong atmospheric river drenched Northern California with heavy rains and damaging wind gusts Saturday, leaving well over 200,000 without power in the state. The San Francisco ...

An EF1 tornado with peak winds of 90 mph occurred just before 2 p.m. in Scotts Valley, California, roughly 67 miles south of San Francisco, according to the National Weather Service.

An EF1 tornado with peak winds of 90 mph occurred just before 2 p.m. in Scotts Valley, California, roughly 67 miles south of San Francisco, according to the National Weather Service.

Radar detected possible tornado conditions near San Francisco, South San Francisco, and Pacifica around 5:55 a.m. The agency also reminds everyone of possible flash flooding due to torrential rains.

California sees about 10 or 11 tornadoes ... In San Francisco County, a first-ever tornado warning was issued early Saturday as thunderstorms and wind gusts of up to 80 mph swept through the ...

The National Weather Service issued a tornado warning for San Francisco at 5:51 a.m. Saturday, the first in its history. Tornadoes are rare but not unheard of in California. Since 1950, there have ...