Three earthquakes, ranging in magnitude from 2.1 to 2.5, strike about 2.5 miles north-northeast of Blackhawk, Calif. between the evening of Saturday, July 31 and early Sunday morning. (Courtesy of U.S. Geological Survey)
The U.S. Geological Survey reported three minor earthquakes between Saturday evening and Sunday morning in the Black Hills area south of Mount Diablo.
The largest was a 2.5 magnitude earthquake that occurred at 10:38 p.m. Saturday about 2.5 miles north-northeast of Blackhawk. The epicenter sits between Mount Diablo State Park and Morgan Territory Regional Preserve. The quake’s center depth was recorded at about 5.5 miles.
A magnitude 2.1 preceded at 6:48 p.m. Saturday and another magnitude 2.2 followed early Sunday at 3:27 a.m.
Last modified August 1, 2021 11:12 am
This website uses cookies.