2026-02-04T19:48:24.64Z37.765167236328097-121.9331665039063.69000005722046manualconfirmedUSGS2.21md1Origin/20260204195200.497847.58163Magnitude/20260204195200.497912.58164USGS4 km ESE of San Ramon, CAregion namenccatalognc75308442contributorID