2025-12-21T20:45:04.69Z37.7639999389648-121.9560012817387.15000009536743manualconfirmedUSGS1.31md1Origin/20251221204713.404351.18627Magnitude/20251221204713.404402.18628USGS3 km SE of San Ramon, CAregion namenccatalognc75284296contributorID