2025-10-28T07:44:31.1Z37.9314994812012-121.99183654785210.920000076293899manualconfirmedUSGS1.02md1Origin/20251028074632.557146.111912Magnitude/20251028074632.5572.111913USGS5 km SSE of Concord, CAregion namenccatalognc75255591contributorID