2026-02-03T08:11:20.03Z37.765998840332-121.9361648559576.96999979019165manualconfirmedUSGS1.52md1Origin/20260203081314.742529.43911Magnitude/20260203081314.742576.43912USGS4 km ESE of San Ramon, CAregion namenccatalognc75306591contributorID