Earthquake · Reviewed by USGS
M1.6 earthquake 23 km SSE of Augusta, Montana
A magnitude 1.6 earthquake struck 23 km SSE of Augusta, Montana at Oct 4, 2026, 09:18 UTC, at a depth of 15 km. The epicentre was 74 km (46 mi) WSW of Great Falls.
Details
| Magnitude | 1.6 ml |
|---|---|
| Time | Oct 4, 2026, 09:18 UTC |
| Depth | 14.6 km |
| Coordinates | 47.304, -112.243 |
| Felt reports | 0 |
| Tsunami flag | None |
| Source | USGS event page |
02 — Around it
Other earthquakes within 100 km
| Magnitude | Location | Distance | Depth | Time |
|---|---|---|---|---|
| 1.9 | 24 km SSW of Augusta, Montana | 24 km / 15 mi | depth 3 km | |
| 1.4 | 5 km WSW of Elliston, Montana | 87 km / 54 mi | depth 16 km | |
| 1.1 | 27 km ENE of Seeley Lake, Montana | 69 km / 43 mi | depth 5 km | |
| 2.1 | 6 km WSW of Elliston, Montana | 87 km / 54 mi | depth 14 km | |
| 1.2 | 17 km WNW of Lincoln, Montana | 60 km / 38 mi | depth 15 km | |
| 1.6 | 2 km SE of South Hills, Montana | 87 km / 54 mi | depth -2 km | |
| 1.4 | 38 km NNE of Ovando, Montana | 55 km / 34 mi | depth 21 km | |
| 1.3 | 41 km WSW of Augusta, Montana | 51 km / 32 mi | depth 9 km | |
| 1.3 | 14 km ESE of Lincoln, Montana | 51 km / 31 mi | depth 9 km | |
| 1.2 | 14 km ESE of Lincoln, Montana | 50 km / 31 mi | depth 9 km | |
| 3.1 | 12 km N of Ovando, Montana | 68 km / 42 mi | depth 5 km |
USGS can revise magnitude and location after the first report. See magnitude vs intensity and aftershocks.