Idaho earthquakes

M2.2 earthquake 25 km SSW of Irwin, Idaho

A magnitude 2.2 earthquake struck 25 km SSW of Irwin, Idaho on Mon, Mar 16, 2015, 2:37 PM MDT (20:37 UTC), 1 km (0 mi) below the surface.

Automatic solution: the magnitude and location may still be revised.

A larger quake followed: M2.3 17 km W of Bennington, Idaho. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
2.2 (Mc), micro
Magnitude from
Montana Bureau of Mines and Geology
Local time
UTC
2015-03-16 20:37:21 UTC
Depth
0.5 km (0.3 mi), shallow
Epicenter
43.211° N, 111.455° W
Region
Idaho
Tsunami flag
No
Status
Automatic solution, may be revised

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

An automatic solution; a seismologist may revise it.

Location uncertainty
About 0.5 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.50
Station coverage gap
112°
Stations used
28

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 13 in the 30 days before it.

After

  1. 2.25 km ENE of Alta, Wyoming · 4212 days ago · 4 km deep · 74 km away
  2. 2.317 km W of Bennington, Idaho · 4190 days ago · 0 km deep · 93 km away
  3. 1.919 km SSW of Irwin, Idaho · 4180 days ago · 7 km deep · 6 km away
  4. 1.75 km SE of Kelly, Wyoming · 4174 days ago · 8 km deep · 83 km away
  5. 1.624 km SW of Swan Valley, Idaho · 4171 days ago · 1 km deep · 16 km away
  6. 1.85 km ENE of Jackson, Wyoming · 4163 days ago · 6 km deep · 69 km away · felt by 7
  7. 1.811 km ENE of Bennington, Idaho · 4161 days ago · 5 km deep · 89 km away

Before

  1. 1.63 km NNE of Bennington, Idaho · 4220 days ago · 6 km deep · 89 km away
  2. 1.6southern Idaho · 4220 days ago · 3 km deep · 89 km away
  3. 1.92 km N of Bennington, Idaho · 4220 days ago · 3 km deep · 89 km away
  4. 1.630 km NNE of Alta, Wyoming · 4221 days ago · 8 km deep · 100 km away
  5. 2.04 km NW of Bennington, Idaho · 4222 days ago · -3 km deep · 89 km away
  6. 2.23 km NW of Bennington, Idaho · 4223 days ago · 4 km deep · 89 km away
  7. 2.84 km NW of Bennington, Idaho · 4223 days ago · -3 km deep · 88 km away
  8. 2.96 km SSW of Georgetown, Idaho · 4223 days ago · -3 km deep · 88 km away
  9. 2.95 km NW of Bennington, Idaho · 4223 days ago · 0 km deep · 88 km away
  10. 2.92 km NW of Bennington, Idaho · 4223 days ago · 3 km deep · 90 km away
  11. 3.43 km NW of Bennington, Idaho · 4223 days ago · -3 km deep · 89 km away · felt by 8
  12. 2.25 km NW of Bennington, Idaho · 4223 days ago · -2 km deep · 88 km away
  13. 1.85 km NNE of Etna, Wyoming · 4223 days ago · 7 km deep · 41 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event mb15567650. Read Sun, Oct 4, 2026, 6:39 AM UTC.