United States
Earthquakes in Montana
ShareUSGS recorded 85 earthquakes in and around Montana in the last 30 days and 1,252 in the last year, counting everything of magnitude 1.0 and above. The strongest in that year measured M 4.2.
- Depth
- When (UTC)
- Local time
- Coordinates
Recent earthquakes in and around Montana
Last 30 days, newest first as of 2026-08-10 17:03 UTC
| Magnitude | Location | Depth | When (UTC) |
|---|---|---|---|
| M 1.1 | 7 km E of Hebgen Lake Estates, Montana | 6.6 km deep | 2026-08-09 19:52 UTC |
| M 1.4 | 7 km ENE of Hebgen Lake Estates, Montana | 9.2 km deep | 2026-08-08 22:34 UTC |
| M 1.1 | 25 km SSW of Silver Gate, Montana | 17.6 km deep | 2026-08-07 17:12 UTC |
| M 0.4 | 55 km SSE of Mammoth, Wyoming | 1.9 km deep | 2026-08-07 03:38 UTC |
| M 2.3 | 18 km SW of Marion, Montana | 4.1 km deep | 2026-08-06 17:03 UTC |
| M 1.0 | 25 km SE of Mammoth, Wyoming | 2.0 km deep | 2026-08-06 10:38 UTC |
| M 0.7 | 8 km SSE of Kicking Horse, Montana | 4.2 km deep | 2026-08-06 01:54 UTC |
| M 2.0 | 24 km SSW of Silver Gate, Montana | 15.8 km deep | 2026-08-05 22:05 UTC |
| M 1.5 | 1 km SSE of South Hills, Montana | at the surface | 2026-08-05 20:34 UTC |
| M 0.9 | 16 km WSW of Marion, Montana | 5.0 km deep | 2026-08-05 10:41 UTC |
| M 1.4 | 7 km N of Ovando, Montana | 4.9 km deep | 2026-08-05 06:48 UTC |
| M 1.1 | 18 km N of Twin Bridges, Montana | 1.8 km deep | 2026-08-04 12:31 UTC |
| M 0.9 | 21 km NNW of Condon, Montana | 5.5 km deep | 2026-08-04 11:59 UTC |
| M 0.7 | 13 km NW of Livingston, Montana | 23.1 km deep | 2026-08-04 11:57 UTC |
| M 0.1 | 3 km WSW of Hebgen Lake Estates, Montana | 13.4 km deep | 2026-08-04 06:30 UTC |
| M 1.3 | 13 km NNW of Ennis, Montana | 4.1 km deep | 2026-08-04 05:19 UTC |
| M 0.9 | 37 km SE of West Yellowstone, Montana | 5.2 km deep | 2026-08-03 17:35 UTC |
| M 1.1 | 36 km NNE of Ovando, Montana | 5.0 km deep | 2026-08-03 09:30 UTC |
| M 1.9 | 25 km S of Ennis, Montana | 11.7 km deep | 2026-08-03 07:19 UTC |
| M 1.4 | 51 km SSE of Mammoth, Wyoming | 5.0 km deep | 2026-08-03 05:40 UTC |
| M 1.1 | 51 km SSE of Mammoth, Wyoming | 3.6 km deep | 2026-08-03 05:38 UTC |
| M 0.6 | 12 km WNW of Radersburg, Montana | 4.9 km deep | 2026-08-03 04:03 UTC |
| M 0.9 | 34 km E of West Yellowstone, Montana | 6.5 km deep | 2026-08-03 03:55 UTC |
| M 0.6 | 7 km WSW of Condon, Montana | 16.5 km deep | 2026-08-02 22:53 UTC |
| M 1.2 | 14 km NE of West Yellowstone, Montana | 10.9 km deep | 2026-08-01 22:37 UTC |
| M 0.9 | 14 km NE of West Yellowstone, Montana | 11.6 km deep | 2026-08-01 22:28 UTC |
| M 0.8 | 13 km NE of West Yellowstone, Montana | 11.6 km deep | 2026-08-01 22:24 UTC |
| M 0.5 | 17 km W of Hebgen Lake Estates, Montana | 5.3 km deep | 2026-08-01 20:40 UTC |
| M 1.3 | 51 km SE of Mammoth, Wyoming | 5.2 km deep | 2026-08-01 19:22 UTC |
| M 0.5 | 52 km SSW of Silver Gate, Montana | 2.5 km deep | 2026-08-01 17:20 UTC |
| M 0.5 | 14 km NNE of West Yellowstone, Montana | 7.7 km deep | 2026-08-01 15:57 UTC |
| M 1.1 | 14 km ESE of Harrison, Montana | 2.2 km deep | 2026-08-01 10:54 UTC |
| M 0.5 | 25 km ENE of West Yellowstone, Montana | 2.2 km deep | 2026-08-01 07:44 UTC |
| M 0.3 | 26 km W of Hebgen Lake Estates, Montana | 3.8 km deep | 2026-07-31 23:09 UTC |
| M 0.2 | 22 km SSW of Mammoth, Wyoming | 4.7 km deep | 2026-07-31 10:22 UTC |
| M 0.7 | 8 km SSW of Marysville, Montana | 5.0 km deep | 2026-07-31 10:13 UTC |
| M 0.3 | 29 km ESE of West Yellowstone, Montana | 5.7 km deep | 2026-07-31 06:34 UTC |
| M 1.0 | 29 km ESE of West Yellowstone, Montana | 7.5 km deep | 2026-07-31 06:21 UTC |
| M 1.4 | 29 km ESE of West Yellowstone, Montana | 7.2 km deep | 2026-07-31 06:18 UTC |
| M 0.8 | 29 km ESE of West Yellowstone, Montana | 7.0 km deep | 2026-07-31 05:36 UTC |
The largest on record in and around Montana
Since 1900, when the instrumental record becomes usable. The largest is M 7.2 at The 1959 Hebgen Lake, Montana Earthquake on 1959-08-18: major: serious damage over large areas.
Largest since 1900 USGS
| Magnitude | Location | Date | Depth |
|---|---|---|---|
| M 7.2 | The 1959 Hebgen Lake, Montana Earthquake | 1959-08-18 | 12.0 km deep |
| M 6.6 | The 1925 Clarkston Valley, Montana Earthquake | 1925-06-28 | Not recorded |
| M 6.5 | Stanley, Idaho | 2020-03-31 | 12.1 km deep |
| M 6.4 | Clarkston Valley, Montana (Aftershock) | 1925-06-28 | Not recorded |
| M 6.3 | 22 km SW of Mammoth, Wyoming | 1959-08-18 | 10.0 km deep |
| M 6.1 | 12 km N of Winston, Montana | 1935-10-19 | 15.0 km deep |
| M 6.1 | 30 km SSW of Big Sky, Montana | 1947-11-23 | 15.0 km deep |
| M 6.0 | 21 km E of West Yellowstone, Montana | 1959-08-19 | 5.0 km deep |
| M 5.9 | 6 km E of Montana City, Montana | 1935-10-31 | 10.0 km deep |
| M 5.9 | 2 km ENE of Helena, Montana | 1935-10-12 | 5.0 km deep |
How these numbers were counted
Counts include every earthquake of magnitude 1.0 and above that USGS located in and around Montana. The search is a latitude and longitude rectangle covering Montana. No region is a rectangle, so events just outside the border can appear; each row shows the location text USGS published, which names the nearest town. Full method, including why counts from different places are not comparable.
Source: USGS Earthquake Hazards Program (FDSN event service). Retrieved 2026-08-10. Public domain.