2026-08-18T02:00:34.67Z38.836833953857-122.807830810552.0599999427795manualconfirmedUSGS0.66md1Origin/20260818020250.549067.416813Magnitude/20260818020250.549128.416814USGS8 km WNW of Cobb, CAregion namenccatalognc75420382contributorID