A 3.7 magnitude earthquake struck in the South Bay Tuesday morning and was followed by a 3.5 magnitude aftershock about a minute later, according to the United States Geological Survey.
The quakes, centered near Morgan Hill, struck at 6:58 and 6:59 a.m. and could be felt in San Jose and across much of the Bay Area. The second quake originally measured at 3.6 and was later downgraded to 3.5, the USGS said.
The temblors were centered about 6.2 miles east-northeast of Morgan Hill, and both were less than 3 miles deep, according to the USGS.
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Residents in the South Bay reported feeling a good jolt or a jolt and a shake.
People from as far north as San Francisco and Oakland and as far south as Boulder Creek reported feeling light shaking, and residents on the Peninsula, including in Menlo Park and Redwood City, said they felt the quakes.