2026-08-09T05:30:40.98Z37.818668365479-121.909835815438.6999998092651manualconfirmedUSGS1.26md1Origin/20260809053311.54584.327984Magnitude/20260809053311.545902.327985USGS0 km SW of Blackhawk, CAregion namenccatalognc75414477contributorID