2025-12-20T03:41:31.54Z37.7501678466797-121.9366683959967.96999979019165manualconfirmedUSGS2.47md1Origin/20251220034344.438606.4323Magnitude/20251220034344.438663.4324USGS5 km SE of San Ramon, CAregion namenccatalognc75283006contributorID