On Saturday, June 22, 2024, at 0900, a major earthquake occurred in the East San Francisco Bay. Preliminary reports indicate a 7.0 magnitude earthquake on the Hayward Fault, with an epicenter near the city of Fremont. The rupture has resulted in ground shaking and damage within 19 California counties, including throughout Sonoma County. Small aftershocks have followed the initial earthquake (maximum magnitude 4.3) causing most people to abandon structures (except single family wood frame homes) and seek open ground. read more