2026-03-23T17:59:44.16Z37.771831512451-121.94349670416.4299998283386manualconfirmedUSGS2.02md1Origin/20260323180129.724017.221501Magnitude/20260323180129.724101.221502USGS3 km ESE of San Ramon, CAregion namenccatalognc75331907contributorID