2025-12-21T02:36:34.83Z37.7504997253418-121.9414978027349.4399995803833manualconfirmedUSGS2.82md1Origin/20251221023910.231733.12603Magnitude/20251221023910.231784.12604USGS5 km SE of San Ramon, CAregion namenccatalognc75283696contributorID