Montana earthquakes

M2.2 earthquake 27 km SSE of Mammoth, Wyoming

A magnitude 2.2 earthquake struck 27 km SSE of Mammoth, Wyoming on Mon, Mar 23, 2015, 1:25 AM MDT (07:25 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M3.0 50 km SSE of Mammoth, Wyoming. This one was a foreshock.

Gardiner 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
2.2 (ML, local (Richter)), micro
Magnitude from
University of Utah Seismograph Stations
Local time
UTC
2015-03-23 07:25:34 UTC
Depth
7.2 km (4.5 mi), shallow
Epicenter
44.752° N, 110.542° 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 0.6 km horizontally, 0.8 km in depth
Magnitude uncertainty
±0.47
Depth from
FROM_LOCATION
Station coverage gap
135°
Stations used
13

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 21 in the 60 days after this one and 13 in the 30 days before it.

After

  1. 1.628 km SSE of Mammoth, Wyoming · 4212 days ago · 7 km deep · 0 km away
  2. 1.949 km ESE of West Yellowstone, Montana · 4206 days ago · 2 km deep · 24 km away
  3. 1.825 km WSW of Corwin Springs, Montana · 4202 days ago · 15 km deep · 51 km away
  4. 1.730 km NNE of Alta, Wyoming · 4201 days ago · 10 km deep · 87 km away
  5. 1.65 km ESE of Hebgen Lake Estates, Montana · 4195 days ago · 12 km deep · 46 km away
  6. 2.245 km ENE of Warm River, Idaho · 4191 days ago · 7 km deep · 60 km away
  7. 1.545 km ENE of Warm River, Idaho · 4191 days ago · 5 km deep · 61 km away
  8. 2.125 km ESE of West Yellowstone, Montana · 4187 days ago · 6 km deep · 31 km away
  9. 2.029 km ESE of West Yellowstone, Montana · 4186 days ago · 5 km deep · 27 km away
  10. 2.251 km SE of Mammoth, Wyoming · 4177 days ago · 5 km deep · 24 km away
  11. 1.625 km SE of Mammoth, Wyoming · 4176 days ago · 6 km deep · 6 km away
  12. 1.78 km NNW of Big Sky, Montana · 4171 days ago · 11 km deep · 95 km away
  13. 1.5Idaho-Montana border region · 4169 days ago · 8 km deep · 48 km away
  14. 1.74 km SE of Hebgen Lake Estates, Montana · 4169 days ago · 10 km deep · 49 km away
  15. 2.14 km SE of Hebgen Lake Estates, Montana · 4169 days ago · 9 km deep · 49 km away
  16. 2.04 km SE of Hebgen Lake Estates, Montana · 4165 days ago · 10 km deep · 49 km away
  17. 1.635 km E of West Yellowstone, Montana · 4164 days ago · 5 km deep · 18 km away
  18. 1.524 km SSE of West Yellowstone, Montana · 4162 days ago · 6 km deep · 46 km away
  19. 1.74 km SE of Hebgen Lake Estates, Montana · 4162 days ago · 10 km deep · 49 km away
  20. 3.050 km SSE of Mammoth, Wyoming · 4156 days ago · 4 km deep · 23 km away · felt by 8
  21. 2.250 km SSE of Mammoth, Wyoming · 4156 days ago · 5 km deep · 23 km away

Before

  1. 2.029 km SSE of Mammoth, Wyoming · 4212 days ago · 4 km deep · 1 km away
  2. 2.017 km ENE of Hebgen Lake Estates, Montana · 4213 days ago · 8 km deep · 35 km away
  3. 1.655 km SE of West Yellowstone, Montana · 4214 days ago · 4 km deep · 49 km away
  4. 1.830 km SSE of Mammoth, Wyoming · 4215 days ago · 5 km deep · 3 km away
  5. 1.630 km NNE of Alta, Wyoming · 4220 days ago · 8 km deep · 87 km away
  6. 1.953 km SSE of Mammoth, Wyoming · 4222 days ago · 4 km deep · 26 km away
  7. 1.51 km SW of Hebgen Lake Estates, Montana · 4225 days ago · 12 km deep · 52 km away
  8. 1.734 km SE of West Yellowstone, Montana · 4228 days ago · 2 km deep · 45 km away
  9. 1.635 km SSE of West Yellowstone, Montana · 4228 days ago · 2 km deep · 51 km away
  10. 1.941 km SSE of Mammoth, Wyoming · 4230 days ago · 4 km deep · 14 km away
  11. 2.023 km WNW of Hebgen Lake Estates, Montana · 4231 days ago · 5 km deep · 73 km away
  12. 1.930 km ESE of West Yellowstone, Montana · 4233 days ago · 7 km deep · 26 km away
  13. 1.94 km SE of Hebgen Lake Estates, Montana · 4235 days ago · 9 km deep · 48 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu60105207. Read Sat, Oct 3, 2026, 1:45 PM UTC.