A magnitude 3.5 earthquake centered near the Calaveras Reservoir 5.5 miles northeast of Milpitas shook a good part of the East Bay and South Bay, including Palo Alto, on Sunday at about 7:10 p.m., the United States Geological Survey said. It was the third notable earthquake in the Bay Area this weekend.
No damages or injuries had been reported by 8 p.m. The area where the earthquake originated is rural, just south of the Sunol Regional Wilderness near the Alameda-Santa Clara County line.
An earthquake measuring 3.9 on the Richter scale also shook the area around The Geysers in Sonoma County on Saturday at 8:45 a.m., according to the USGS. It was at a depth of just under a mile along the Collayomi fault zone, the USGS reported. No damages were reported.
On Saturday at about 5:27 p.m., a magnitude 3.3 earthquake (downgraded from 3.6) shook much of the East Bay and North Bay. It was centered in the Carquinez Heights area of southernmost Vallejo.