2026-09-06T05:55:21.71Z38.837333679199-122.783500671391.99manualconfirmedUSGS1.5md1Origin/20260906055759.685577.10007Magnitude/20260906055759.685638.10008USGS5 km WNW of Cobb, CAregion namenccatalognc75430497contributorID