2026-04-09T11:57:50.4Z38.517665863037-119.550003051762.1400001049042manualconfirmedUSGS2.48md1Origin/20260409120012.6883.190598Magnitude/20260409120012.688362.190599USGS6 km W of Walker, CAregion namenccatalognc75341562contributorID