2025-12-08T17:42:33.66Z37.7606658935547-121.9430007934576.01000022888184manualconfirmedUSGS1.67md1Origin/20251208174417.000773.173393Magnitude/20251208174417.000821.173394USGS4 km SE of San Ramon, CAregion namenccatalognc75276701contributorID