2026-05-31T16:32:43.98Z36.766498565674-121.427169799815.1900000572205manualconfirmedUSGS1.35md1Origin/20260531163518.360313.19581Magnitude/20260531163518.360374.19582USGS7 km SW of Ridgemark, CAregion namenccatalognc75368766contributorID