2026-08-04T00:28:24.03Z37.851165771484-122.047500610357.4899997711182manualconfirmedUSGS1.04md1Origin/20260804003031.082893.286017Magnitude/20260804003031.082953.286018USGS1 km W of Alamo, CAregion namenccatalognc75410912contributorID