2025-12-08T13:21:59.47Z37.7563323974609-121.9581680297857.6100001335144manualconfirmedUSGS2.43md1Origin/20251208132354.8089.170982Magnitude/20251208132354.808953.170983USGS3 km SSE of San Ramon, CAregion namenccatalognc75276531contributorID