| Magnitude | 2.1 |
| Region | WESTERN MONTANA |
| Date time | 2021-12-16 03:23:35.7 UTC |
| Location | 45.922 ; -111.567 |
| Depth | 4 km |
| Distance | 238 km W of Billings, United States / pop: 110,000 / local time: 20:23:35.7 2021-12-15 3 km NNW of Three Forks, United States / pop: 1,900 / local time: 20:23:35.7 2021-12-15 |
All data providers for this event:
Montana Regional Seismic Network, Montana Bureau of Mines and Geology -- Helena, United States (MB)Further information can be found at:
National Earthquake Information Center, U.S. Geological Survey -- Golden, United States (NEIC)GeoForschungsZentrum (GFZ) -- Potsdam, Germany (GFZ)