2026-05-18T17:17:14.59Z38.939998626709-123.360336303713.4500000476837manualconfirmedUSGS1.72md1Origin/20260518171934.942188.2539Magnitude/20260518171934.942248.2540USGS8 km S of Boonville, CAregion namenccatalognc75362276contributorID