A preliminary 2.7 magnitude earthquake struck in Pittsburg Friday afternoon, according to the United States Geological Survey.
The quake hit at 2:30 p.m. and was centered 2.3 miles south of Pittsburg, 4.4 miles north-northeast of Clayton, 4.5 miles east-southeast of Bay Point and 4.7 miles west of Antioch, the USGS said.
No other information was immediately available.
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