2025-12-27T17:07:39.24Z37.7456665039062-121.9455032348638.14999961853027manualconfirmedUSGS1.8md1Origin/20251227171016.437799.66837Magnitude/20251227171016.43785.66838USGS5 km SE of San Ramon, CAregion namenccatalognc75287166contributorID