| Magnitude | 3.8 |
| Region | SAN FRANCISCO BAY AREA, CALIF. |
| Date time | 2025-12-21 02:31:54.7 UTC |
| Location | 37.750 ; -121.939 |
| Depth | 10 km |
| Distance | 15 km NE of Hayward, United States / pop: 158,000 / local time: 18:31:54.7 2025-12-20 11 km NW of Pleasanton, United States / pop: 79,500 / local time: 18:31:54.7 2025-12-20 |
Source parameters provided by:
USGS Northern California Regional Network, USGS-Menlo Park, California -- Menlo Park, United States (NC)
All data providers for this event:
USGS Northern California Regional Network, USGS-Menlo Park, California -- Menlo Park, United States (NC)National Earthquake Information Center, U.S. Geological Survey -- Golden, United States (NEIC)
Further information can be found at:
GeoForschungsZentrum (GFZ) -- Potsdam, Germany (GFZ)National Earthquake Information Center, U.S. Geological Survey -- Golden, United States (NEIC)