2026-03-11T05:06:12.19Z37.891998291016-121.99233245859.9499998092651manualconfirmedUSGS1.83md1Origin/20260311050833.772332.78369Magnitude/20260311050833.772392.78370USGS6 km NE of Alamo, CAregion namenccatalognc75325727contributorID