
Several earthquakes shook the San Francisco Bay Area on Monday morning (February 2) as the county expects to welcome 1.3 million Super Bowl fans this week.
The strongest was a 4.2-magnitude quake near San Ramon just after 7am, following a 3.8 quake about half an hour earlier, and another 3.8 quake at 7.30am, according to the US Geological Survey.
In total, as many as 20 small quakes were recorded across the region.
Some people felt the shaking in downtown San Francisco, where Sunday's Super Bowl activities will get underway, but there are no reports of major damage or serious injuries.
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The Bay Area is gearing up for a huge Super Bowl week, with more than 1.3 million fans expected to take part in festivities and related events around the region.
Previously, San Francisco International Airport director Mike Nakornkhet told ABC 7 News: "We're forecasting 1.3 million travelers from February 1 through 10, so we expect big days around the big game to be busy like holidays."

The New England Patriots will take on the Seattle Seahawks at Levi's Stadium on Sunday (February 8).
But the Moscone Center is also the star of the show, with build-up taking place for the huge game there throughout the week.
Grammy-winning Puerto Rican rapper Bad Bunny will be heading up the prestigious halftime show, while American rock band Green Day will also be making an appearance.
Though notably absent from Sunday's game will be President Donald Trump, who is refusing to attend this year.

He made his thoughts on the halftime show acts clear, telling the New York Post he is 'anti-them,' adding: "I think it’s a terrible choice. All it does is sow hatred. Terrible."
He also slammed the location, adding: “It’s just too far away. I would. I’ve [gotten] great hands [at] the Super Bowl. They like me.
“I would go if, you know, it was a little bit shorter.”
Bad Bunny was among the artists who slammed ICE at the Grammys on Sunday night amid intensified raids under Trump.
While collecting his award for Best Música Urbana Album, Bad Bunny said: “Before I say thanks to God, I’m gonna say ‘ICE OUT’. We’re not savage, we’re not animals, we’re not aliens, we’re Americans.

“Also I wanna say to the people; I know it’s tough not to hate on these - and I was thinking sometimes we get contaminos, I don't know how to say that in English.
"The hate gets more powerful, with more hate, the only thing more powerful than hate is love.
"So please, we need be different, if we fight we have to do it with love; if we don’t hate them, we love our people we love our family and that’s the way to do it, don’t forget that.”
Topics: Super Bowl, California, Music, Donald Trump, Politics, US News, Sport