2026-10-19T01:17:48.43Z37.763832092285-121.9854965216.0500001907349manualconfirmedUSGS1.11md1Origin/20261019012020.553777.78063Magnitude/20261019012020.553852.78064USGS2 km SSW of San Ramon, CAregion namenccatalognc75451916contributorID