2025-12-29T00:54:06.74Z37.7506675720215-121.9571685791020.94manualconfirmedUSGS1.44md1Origin/20251229015651.68968.76941Magnitude/20251229015651.689734.76942USGS4 km SSE of San Ramon, CAregion namenccatalognc75287876contributorID