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San Francisco News

October 21, 2011 by staff 

San Francisco NewsSan Francisco News, Two small earthquakes hit San Francisco area Thursday, shaking residents on the same day many Californians participated in a mock earthquake in the annual preparation.

An earthquake with a preliminary magnitude of 3.8 struck at 8:16 pm Berkeley PDT, the U.S. Geological Survey said. Earthquake occurred Thursday night about six hours after a magnitude 4.0 earthquake in the same area. Berkeley police said there were no reports of damage or injury to any earthquake.

Officials from the Bay Area Rapid Transit said trains the system Thursday night were experiencing minor delays as workers inspected the tracks, a routine procedure after an earthquake.

Caltrain officials said none of its trains was delayed. The second tremor was strong enough to knock pictures off the wall and glass on the floor at the home of Diane Coppini, who lives in nearby Emeryville.

“It was a pleasant shock,” said Coppini in the description of the earthquake.

Seismologists found that the second quake was an aftershock above, said USGS geophysicist Walter Mooney.

“This is a classic example of a replica,” said Mooney.

The earthquake occurred early 2:31 pm and was centered in the San Francisco Bay, six miles below the University of California, Berkeley, campus, according to U.S. maps Geological Survey.

The second earthquake was about nine miles deep, and was centered east of the school, according to the USGS.

Jack Boatwright, a seismologist at the USGS, the quake was described earlier as a “small strong earthquake.”

Tami Humphrey, director of a preschool, north of Berkeley, he went with his students when the quake struck.

“We feel pretty good. I felt like a fall and then a jolt,” he said, adding that “children do not realize.”

More than 8.5 million people registered to participate in preparedness drills held at 10:20 am and was tagged as the Great California ShakeOut.

The quake also occurred almost 22 years to the day after the Loma Prieta earthquake hit the Bay Area during the 1989 World Series. The 6.9 magnitude quake killed 63 people, injured nearly 3,800 and caused up to 10 billion and damages.

Seattle resident Joaquin Miller was in Oakland on Thursday began to shake. He said he first thought it was from a platform stride.

“It was not big enough to scare me,” said 44-year-old.

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