2026-04-18T16:54:59.6Z38.493999481201-122.8136672973623.229999542236manualconfirmedUSGS2.43md1Origin/20260418165717.313282.33353Magnitude/20260418165717.313345.33354USGS6 km WSW of Larkfield-Wikiup, CAregion namenccatalognc75347187contributorID