An earthquake outside of San Francisco shook people awake on Monday morning.



The U.S. Geological Survey said the earthquake struck a mile north of Piedmont, California, at 6:49 a.m. PDT. Originally reported as a magnitude 4.2, the earthquake was adjusted to a 4.0.

Piedmont is in the East Bay, 13 miles east of San Francisco, four miles from downtown Oakland and five miles southeast of Berkeley.



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