Montana earthquakes

M1.9 earthquake Western Montana

A magnitude 1.9 earthquake struck in Western Montana on Fri, Mar 5, 2021, 9:22 AM MST (16:22 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M2.5 5 km SW of Elliston, Montana. This one was a foreshock.

Three Forks forecastMore in Montana

Map

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

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The earthquake

Magnitude
1.9 (ML, local (Richter)), micro
Magnitude from
Montana Bureau of Mines and Geology
Local time
UTC
2021-03-05 16:22:27 UTC
Depth
6.4 km (4.0 mi), shallow
Epicenter
45.977° N, 111.519° 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, 1.7 km in depth
Magnitude uncertainty
±0.27
Depth from
From location
Station coverage gap
78°
Stations used
19

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 14 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 1.87 km WSW of Willow Creek, Montana · 2037 days ago · 2 km deep · 26 km away
  2. 2.119 km W of Pony, Montana · 2036 days ago · 5 km deep · 58 km away
  3. 1.617 km NNW of Ennis, Montana · 2034 days ago · 9 km deep · 59 km away
  4. 2.55 km SW of Elliston, Montana · 2026 days ago · 20 km deep · 97 km away
  5. 2.25 km SW of Elliston, Montana · 2023 days ago · 17 km deep · 96 km away
  6. 1.75 km ENE of Logan, Montana · 2021 days ago · 4 km deep · 14 km away
  7. 1.62 km E of Logan, Montana · 2017 days ago · 12 km deep · 15 km away
  8. 1.87 km W of Sheridan, Montana · 2009 days ago · 10 km deep · 83 km away
  9. 2.0Western Montana · 2005 days ago · 0 km deep · 97 km away
  10. 1.51 km ENE of Toston, Montana · 2003 days ago · 1 km deep · 23 km away
  11. 2.210 km NE of Toston, Montana · 1999 days ago · 1 km deep · 32 km away
  12. 1.615 km SW of Radersburg, Montana · 1989 days ago · 6 km deep · 25 km away
  13. 1.914 km SW of Radersburg, Montana · 1989 days ago · 7 km deep · 26 km away
  14. 1.914 km SW of Radersburg, Montana · 1989 days ago · 5 km deep · 26 km away

Before

  1. 1.69 km SW of Radersburg, Montana · 2046 days ago · 4 km deep · 22 km away
  2. 1.96 km E of Willow Creek, Montana · 2054 days ago · 5 km deep · 17 km away
  3. 2.11 km SSE of Townsend, Montana · 2055 days ago · 6 km deep · 36 km away
  4. 1.87 km WSW of Jefferson City, Montana · 2058 days ago · 4 km deep · 63 km away
  5. 1.57 km ENE of Townsend, Montana · 2059 days ago · 4 km deep · 41 km away
  6. 1.68 km ENE of Townsend, Montana · 2060 days ago · 7 km deep · 42 km away
  7. 2.47 km SW of Elliston, Montana · 2062 days ago · 19 km deep · 97 km away · felt by 2

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event mb80490304. Read Mon, Oct 5, 2026, 1:19 PM UTC.