2026-02-03T00:09:12.88Z37.7581672668457-121.9468307495126.96000003814697manualconfirmedUSGS1.79md1Origin/20260203001106.552154.41111Magnitude/20260203001106.552206.41112USGS4 km SE of San Ramon, CAregion namenccatalognc75306316contributorID