United States
Earthquakes in Montana
ShareUSGS recorded 73 earthquakes in and around Montana in the last 30 days and 1,081 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 2026-09-23 05:14 UTC
| Magnitude | Location | Depth | When (UTC) |
|---|---|---|---|
| M 1.2 | 5 km E of Hebgen Lake Estates, Montana | 7.7 km deep | 2026-09-22 17:22 UTC |
| M 0.4 | 5 km E of Hebgen Lake Estates, Montana | 6.9 km deep | 2026-09-22 15:09 UTC |
| M 1.5 | 37 km S of Silver Gate, Montana | 13.7 km deep | 2026-09-21 20:33 UTC |
| M 0.5 | 21 km ENE of West Yellowstone, Montana | 4.1 km deep | 2026-09-21 09:44 UTC |
| M 0.9 | 41 km SSE of Mammoth, Wyoming | 5.3 km deep | 2026-09-21 05:54 UTC |
| M 0.4 | 17 km SSW of Mammoth, Wyoming | 4.9 km deep | 2026-09-21 03:51 UTC |
| M 0.0 | 25 km WNW of Hebgen Lake Estates, Montana | 14.2 km deep | 2026-09-20 09:43 UTC |
| M -0.2 | 5 km E of Hebgen Lake Estates, Montana | 10.6 km deep | 2026-09-20 07:33 UTC |
| M -0.0 | 3 km SSE of Hebgen Lake Estates, Montana | 4.9 km deep | 2026-09-20 06:55 UTC |
| M 1.6 | 22 km SSW of Mammoth, Wyoming | 5.1 km deep | 2026-09-20 06:15 UTC |
| M -0.1 | 3 km SSE of Hebgen Lake Estates, Montana | 5.0 km deep | 2026-09-20 03:40 UTC |
| M -0.1 | 24 km WNW of Hebgen Lake Estates, Montana | 11.3 km deep | 2026-09-20 01:50 UTC |
| M 1.4 | 24 km WNW of Hebgen Lake Estates, Montana | 13.6 km deep | 2026-09-20 01:47 UTC |
| M 0.1 | 5 km SSE of Hebgen Lake Estates, Montana | 4.4 km deep | 2026-09-19 02:43 UTC |
| M -0.0 | 1 km SSW of Hebgen Lake Estates, Montana | 10.1 km deep | 2026-09-18 15:37 UTC |
| M 3.6 | 5 km NW of Black Eagle, Montana | 27.7 km deep | 2026-09-18 13:40 UTC |
| M 0.8 | 23 km WNW of Hebgen Lake Estates, Montana | 15.8 km deep | 2026-09-18 02:44 UTC |
| M 1.4 | 24 km WNW of Hebgen Lake Estates, Montana | 14.3 km deep | 2026-09-17 05:00 UTC |
| M 0.4 | 24 km WNW of Hebgen Lake Estates, Montana | 16.0 km deep | 2026-09-17 04:52 UTC |
| M 0.8 | 53 km W of Hebgen Lake Estates, Montana | 8.4 km deep | 2026-09-16 19:52 UTC |
| M 0.4 | 23 km SSW of Mammoth, Wyoming | 4.0 km deep | 2026-09-16 18:11 UTC |
| M 1.1 | 22 km SSW of Mammoth, Wyoming | 4.5 km deep | 2026-09-16 13:09 UTC |
| M 0.6 | 20 km SSW of Mammoth, Wyoming | 4.9 km deep | 2026-09-16 12:44 UTC |
| M 0.5 | 20 km SSW of Mammoth, Wyoming | 4.6 km deep | 2026-09-16 12:40 UTC |
| M 1.3 | 23 km SSW of Mammoth, Wyoming | 4.9 km deep | 2026-09-16 12:34 UTC |
| M 0.6 | 22 km SSW of Mammoth, Wyoming | 4.8 km deep | 2026-09-16 10:34 UTC |
| M 0.2 | 45 km W of Hebgen Lake Estates, Montana | at the surface | 2026-09-16 04:50 UTC |
| M 0.2 | 44 km SE of Mammoth, Wyoming | 2.6 km deep | 2026-09-16 02:04 UTC |
| M 0.5 | 43 km SE of Mammoth, Wyoming | 3.4 km deep | 2026-09-16 02:01 UTC |
| M 0.3 | 43 km SE of Mammoth, Wyoming | 2.2 km deep | 2026-09-16 02:00 UTC |
| M 1.3 | 6 km W of Ponderosa Pines, Montana | 7.1 km deep | 2026-09-15 22:05 UTC |
| M 0.9 | 29 km NNE of Spencer, Idaho | 8.1 km deep | 2026-09-15 21:01 UTC |
| M 0.9 | 4 km SW of Somers, Montana | 5.5 km deep | 2026-09-15 18:17 UTC |
| M 1.2 | 3 km NW of Pony, Montana | 3.3 km deep | 2026-09-15 13:54 UTC |
| M 1.1 | 3 km WNW of Pony, Montana | 3.2 km deep | 2026-09-15 13:17 UTC |
| M 0.6 | 15 km W of Hebgen Lake Estates, Montana | 8.1 km deep | 2026-09-15 12:10 UTC |
| M 0.3 | 26 km W of Hebgen Lake Estates, Montana | 10.8 km deep | 2026-09-14 18:51 UTC |
| M 0.5 | 6 km NNE of Condon, Montana | 15.5 km deep | 2026-09-14 17:51 UTC |
| M 1.0 | 2 km WNW of Pony, Montana | 1.1 km deep | 2026-09-14 14:24 UTC |
| M 1.0 | 23 km SSW of Mammoth, Wyoming | 7.8 km deep | 2026-09-14 11:15 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 | 37 km N of Stanley, Idaho | 1944-07-12 | 10.0 km deep |
| M 6.1 | 30 km SSW of Big Sky, Montana | 1947-11-23 | 15.0 km deep |
| M 6.0 | 44 km NNW of Stanley, Idaho | 1945-02-14 | 10.0 km deep |
| M 6.0 | 21 km E of West Yellowstone, Montana | 1959-08-19 | 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 2026-09-23. Public domain.