https://www.mercurynews.com/2021/06/28/magnitude-4-2-quake-rattles-east-bay-2/

CASTRO VALLEY — A short, sharp earthquake initially registering 4.2 magnitude shook underneath multiple East Bay towns but did not cause any injuries or visible damage, the U.S. Geological Survey said Monday.

The quake, later downgraded to a 4.0 magnitude, struck at 6:29 p.m. at an initial depth of about 5.6 miles later judged at about 6.6 miles, and was centered under Cambrian Drive and Easy Street in Castro Valley’s Fairmont Terrace neighborhood.