2025-12-19T21:33:12.16Z37.8301658630371-122.06800079345712.3800001144409manualconfirmedUSGS1.25md1Origin/20251219213603.227512.2563Magnitude/20251219213603.227562.2564USGS4 km SW of Alamo, CAregion namenccatalognc75282906contributorID