2026-05-30T12:36:15.55Z39.977333068848-120.16183471682.9manualconfirmedUSGS2.21md1Origin/20260530123834.12088.10042Magnitude/20260530123834.120945.10043USGS20 km N of Chilcoot-Vinton, CAregion namenccatalognc75368376contributorID