| Magnitude | 2.2 |
| Region | WESTERN MONTANA |
| Date time | 2021-12-20 12:57:18.4 UTC |
| Location | 47.032 ; -111.263 |
| Depth | 16 km |
| Distance | 253 km WNW of Billings, United States / pop: 110,000 / local time: 05:57:18.4 2021-12-20 52 km SSE of Great Falls, United States / pop: 59,600 / local time: 05:57:18.4 2021-12-20 |
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:
GeoForschungsZentrum (GFZ) -- Potsdam, Germany (GFZ)National Earthquake Information Center, U.S. Geological Survey -- Golden, United States (NEIC)