2026-08-18T17:50:46.21Z38.558833333333-122.6575-0.53manualconfirmedUSGS1.1md1Origin/20260818202142.006861.427016Magnitude/20260818202142.006921.427017USGS7 km WSW of Calistoga, CAregion namenccatalognc75420717contributorID