2025-12-20T04:51:26.82Z37.7501678466797-121.9390029907238.77999973297119manualconfirmedUSGS2.3md1Origin/20251220055911.26057.5063Magnitude/20251220055911.260623.5064USGS5 km SE of San Ramon, CAregion namenccatalognc75283151contributorID