The 11:42 a.m. quake was centered 12 miles east of San Jose at a depth of around 4 miles, according to the US Geological Survey.
The site of the earthquake that struck near San Jose, California, early Tuesday, Oct. 25, 2022, is seen on a USGS/Mapbox map. The 5.1 magnitude earthquake struck roughly nine miles east of Seven Trees, a San Jose suburb. USGS/Mapbox via The New York Times
On Tuesday, a magnitude 5.1 earthquake jolted the San Francisco Bay Area, forcing several commuter trains to be delayed. There were no reports of damage or injuries at the time.
The 11:42 a.m. quake was located 12 miles (19 kilometers) east of San Jose at a depth of roughly 4 miles, according to the US Geological Survey (6 kilometers). The region is hill land about 40 miles (64 kilometers) southeast of San Francisco.
According to Lucy Jones, a seasoned California seismologist, the quake occurred on the Calaveras fault, one of eight main faults in the Bay Area.
"The Calaveras fault is prone to minor earthquakes," Jones explained.
According to Jones, it was the biggest earthquake in the Bay Area since a magnitude 6.0 shock in Napa wine area in 2014.
The Calaveras fault, which spans from San Juan Bautista in the south to San Ramon in the north, is a significant branch of the San Andreas fault, according to Jones.
Rich Constantine, mayor of Morgan Hill, a community near San Jose, said he was in his kitchen at the time of the "long and steady" quake.
"We had a frame in the house collapse, everything was shaking, yet there was no damage," he explained.
According to Constantine, Morgan Hill's City Hall and other city buildings were evacuated, but everyone quickly returned to work.
The tremor was felt as far south as the gorgeous Big Sur coast, 75 miles (120 kilometers) south of the epicenter in the vicinity of Joseph Grant Ranch County Park, a vast natural area.
According to the US Geological Survey, a 3.1 aftershock occurred around 5 minutes later.
Several commuter train companies, including Cal Train and the Bay Area Rapid Transit system, known as BART, suspended service to inspect trains for damage. By early afternoon, BART had resumed normal service.
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