Montana earthquakes

M1.6 earthquake 17 km W of Pony, Montana

A magnitude 1.6 earthquake struck 17 km W of Pony, Montana on Mon, May 31, 2021, 4:06 PM MDT (22:06 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M2.5 23 km SE of Virginia City, Montana. This one was a foreshock.

Whitehall forecastMore in Montana

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
1.6 (ML, local (Richter)), micro
Magnitude from
Montana Bureau of Mines and Geology
Local time
UTC
2021-05-31 22:06:17 UTC
Depth
4.2 km (2.6 mi), shallow
Epicenter
45.676° N, 112.123° W
Region
Montana
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 0.3 km horizontally, 3.2 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
84°
Stations used
18

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 23 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 2.317 km N of Dillon, Montana · 1950 days ago · 8 km deep · 50 km away
  2. 1.58 km ENE of Toston, Montana · 1947 days ago · -3 km deep · 85 km away
  3. 2.25 km WSW of Ponderosa Pines, Montana · 1944 days ago · 7 km deep · 66 km away
  4. 1.65 km SW of Ponderosa Pines, Montana · 1943 days ago · 0 km deep · 65 km away
  5. 1.538 km WNW of Hebgen Lake Estates, Montana · 1942 days ago · 11 km deep · 97 km away
  6. 2.22 km SE of Three Forks, Montana · 1931 days ago · 2 km deep · 51 km away
  7. 1.718 km NNE of Dillon, Montana · 1928 days ago · 7 km deep · 49 km away
  8. 1.57 km NNE of Big Sky, Montana · 1925 days ago · 9 km deep · 72 km away
  9. 1.614 km SSE of Elkhorn, Montana · 1920 days ago · 6 km deep · 55 km away
  10. 1.82 km N of Pony, Montana · 1919 days ago · 3 km deep · 17 km away
  11. 1.615 km ESE of Harrison, Montana · 1914 days ago · 5 km deep · 41 km away
  12. 2.316 km SSW of Radersburg, Montana · 1911 days ago · 4 km deep · 53 km away
  13. 2.127 km W of Dillon, Montana · 1911 days ago · 3 km deep · 85 km away
  14. 1.618 km NNE of Dillon, Montana · 1911 days ago · 7 km deep · 49 km away
  15. 1.530 km W of Dillon, Montana · 1910 days ago · 5 km deep · 86 km away
  16. 2.212 km NNW of Ennis, Montana · 1908 days ago · 3 km deep · 36 km away
  17. 2.523 km SE of Virginia City, Montana · 1904 days ago · 8 km deep · 67 km away · felt by 2
  18. 1.828 km SSE of Virginia City, Montana · 1901 days ago · 7 km deep · 73 km away
  19. 1.628 km S of Ennis, Montana · 1901 days ago · 11 km deep · 72 km away
  20. 1.828 km SSE of Virginia City, Montana · 1899 days ago · 7 km deep · 73 km away
  21. 1.912 km NNW of Ennis, Montana · 1894 days ago · 1 km deep · 36 km away
  22. 1.519 km N of Dillon, Montana · 1894 days ago · 9 km deep · 52 km away
  23. 2.03 km W of Pony, Montana · 1893 days ago · 0 km deep · 15 km away

Before

  1. 1.57 km WSW of Ennis, Montana · 1954 days ago · 12 km deep · 47 km away
  2. 1.613 km NNW of Ennis, Montana · 1960 days ago · 5 km deep · 36 km away
  3. 2.113 km NNW of Ennis, Montana · 1960 days ago · 1 km deep · 36 km away
  4. 2.313 km NNW of Ennis, Montana · 1960 days ago · 4 km deep · 36 km away
  5. 2.412 km NNW of Ennis, Montana · 1960 days ago · 1 km deep · 37 km away
  6. 1.710 km SW of Twin Bridges, Montana · 1968 days ago · 7 km deep · 32 km away
  7. 1.52 km NW of Alder, Montana · 1977 days ago · 11 km deep · 37 km away
  8. 1.73 km NW of Alder, Montana · 1977 days ago · 9 km deep · 37 km away
  9. 2.14 km NNW of Alder, Montana · 1977 days ago · 4 km deep · 35 km away
  10. 2.23 km NW of Alder, Montana · 1977 days ago · 11 km deep · 37 km away

Earthquakes todayMontana earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event mb80506879. Read Mon, Oct 5, 2026, 6:47 AM UTC.