Largest earthquake in 25 YEARS rocks San Francisco Bay: 6.0 earthquake leaves 89 injured, buildings destroyed and thousands without power

• The 6.0 magnitude earthquake hit Northern California about six miles southwest of Napa around 3:30am Sunday morning
• It was the largest earthquake to hit California since the 1989 Loma Prieta quake 
• Queen of the Valley Hospital has treated 89 patients for injuries related to the earthquake
• At least three injuries are described as 'major'  
• About 36 aftershocks have been recorded so far - the largest registering at 3.6 magnitude
• Pictures posted to social media show serious damage to buildings and roads in the California wine country 
• The earthquake also set off several fires in the Napa area, including one in a mobile home park
• There is a small 5- to 10-percent chance that this morning's earthquake is a prelude to a larger event 
• Gov Jerry Brown has called a state of emergency  

By ASSOCIATED PRESS and ASHLEY COLLMAN FOR MAILONLINE

PUBLISHED: 11:55 GMT, 24 August 2014 | UPDATED: 18:26 GMT, 24 August 2014

An earthquake with a preliminary magnitude of 6.0 struck California's northern San Francisco Bay area early Sunday,damaging buildings, starting fires and leaving thousands without power.

The 30-second earthquake struck just before 3:30am about 10 miles northwest of American Canyon, which is about 6 miles southwest of Napa, in California wine country, Leslie Gordon of the U.S. Geological Survey said.

It's the largest earthquake to shake the Bay Area since the deadly 6.9 magnitude Loma Prieta quake in 1989, the USGS said. 

The shaking set off car alarms and had residents of neighboring Sonoma County running out of their houses in the middle of night. 

After the quake, residents flooded social media with pictures and video of the earthquake's aftermath, showing shook-up kitchens, grocery store aisles littered with snacks and shattered bottles spilling liquid at the region's famous wineries. 

Several historic buildings in downtown Napa sustained serious damage, their brick facades crumbling onto the street. 

Queen of the Valley Medical Center has treated 89 patients following the earthquake, according to spokesman Vanessa Degier. Most of the injuries appear to be minor lacerations and abrasions. 

Three of the patients suffered 'major injuries' including a child who was flown by helicopter to a trauma clinic. As for the other two adult patients, one suffered a heart attack and another fractured their hip and had to go into surgery. 

The hospital set up an outdoor triage to treat the influx of patients.

Hospital president Walt Mickens told the San Jose Mercury News that there were 'lots of cut feet'. 

There were 'lots of cut feet' hospital president Walt Mickens said. 

So far, there are no reports of fatalities or missing persons.  

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