2026-09-24T03:44:47.72Z40.279499053955-121.363830566418.579999923706manualconfirmedUSGS2.35md1Origin/20260924034712.128069.12483Magnitude/20260924034712.128129.12484USGS12 km WSW of Chester, CAregion namenccatalognc75440672contributorID