The quake happened around 10:02 a.m. northeast of Alum Rock.
SAN JOSE, Calif. (KGO) -- A preliminary magnitude 3.4 earthquake struck San Jose on Wednesday, according to the United States Geological Survey.
The quake happened around 10:02 a.m. northeast of Alum Rock.
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It had a depth of 7.2km.
BART, Caltrain and the Valley Transportation Authority say the earthquake is not impacting service.
So far, there are no reports of damage or injuries.
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