2025-12-23T08:23:42.03Z37.751335144043-121.9461669921889.11999988555908manualconfirmedUSGS2.09md1Origin/20251223082534.404862.31879Magnitude/20251223082534.404921.31880USGS4 km SE of San Ramon, CAregion namenccatalognc75285171contributorID