2026-03-23T10:34:08.61Z37.773834228516-121.942001342778.8800001144409manualconfirmedUSGS2.75md1Origin/20260323103602.90347.216226Magnitude/20260323103602.90355.216227USGS3 km ESE of San Ramon, CAregion namenccatalognc75331762contributorID