2026-08-18T17:00:59.65Z36.545666666667-120.4713333333310.48manualconfirmedUSGS1.49md1Origin/20260818200835.354764.426920Magnitude/20260818200835.354828.426921USGS15 km WNW of Cantua Creek, CAregion namenccatalognc75420692contributorID