2025-12-17T13:34:09.37Z37.7543334960938-121.941001892097.8600001335144manualconfirmedUSGS2.22md1Origin/20251217133712.852403.255847Magnitude/20251217133712.852455.255848USGS4 km SE of San Ramon, CAregion namenccatalognc75281521contributorID