2026-04-18T20:14:07.54Z38.823501586914-122.765502929692.1400001049042manualconfirmedUSGS1.27md1Origin/20260418201610.341367.34437Magnitude/20260418201610.341455.34438USGS4 km W of Cobb, CAregion namenccatalognc75347277contributorID