2026-02-04T19:15:41.15Z37.7709999084473-121.9390029907236.69000005722046manualconfirmedUSGS1.48md1Origin/20260204191740.874757.57967Magnitude/20260204191740.874823.57968USGS4 km ESE of San Ramon, CAregion namenccatalognc75308427contributorID