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.