2025-12-29T00:52:18.01Z37.7490005493164-121.9491653442387.46000003814697manualconfirmedUSGS2.18md1Origin/20251229015652.278561.76949Magnitude/20251229015652.278627.76950USGS4 km SE of San Ramon, CAregion namenccatalognc75287871contributorID