Idaho earthquakes

M2.8 earthquake 10 km SE of Challis, Idaho

A magnitude 2.8 earthquake struck 10 km SE of Challis, Idaho on Wed, Mar 4, 2015, 7:32 PM MST (02:32 UTC), 12 km (8 mi) below the surface.

A larger quake followed: M3.1 11 km SE of Challis, Idaho. This one was a foreshock.

Challis forecastMore in Idaho

Map

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

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The earthquake

Magnitude
2.8 (ml), micro
Local time
UTC
2015-03-05 02:32:43 UTC
Depth
12.3 km (7.6 mi), shallow
Epicenter
44.436° N, 114.139° W
Region
Idaho
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 3.6 km horizontally, 6.8 km in depth
Station coverage gap
53°
Stations used
30

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 12 in the 30 days before it.

After

  1. 3.111 km SE of Challis, Idaho · 4218 days ago · 11 km deep · 2 km away
  2. 1.910 km SE of Challis, Idaho · 4213 days ago · 13 km deep · 1 km away
  3. 2.511 km SE of Challis, Idaho · 4212 days ago · 11 km deep · 1 km away
  4. 2.314 km NW of Challis, Idaho · 4205 days ago · 5 km deep · 25 km away
  5. 2.09 km SE of Challis, Idaho · 4203 days ago · 12 km deep · 1 km away
  6. 2.012 km N of Challis, Idaho · 4195 days ago · 11 km deep · 22 km away
  7. 2.115 km NNW of Challis, Idaho · 4195 days ago · 4 km deep · 26 km away
  8. 2.08 km SE of Challis, Idaho · 4191 days ago · 12 km deep · 3 km away
  9. 2.518 km NE of Leadore, Idaho · 4190 days ago · 12 km deep · 86 km away
  10. 2.110 km SE of Challis, Idaho · 4189 days ago · 12 km deep · 1 km away
  11. 1.623 km SW of Leadore, Idaho · 4182 days ago · 13 km deep · 47 km away
  12. 2.67 km SE of Challis, Idaho · 4173 days ago · 12 km deep · 4 km away
  13. 2.337 km NW of Challis, Idaho · 4172 days ago · 11 km deep · 48 km away
  14. 1.923 km SW of Leadore, Idaho · 4166 days ago · 11 km deep · 46 km away
  15. 2.116 km W of Clayton, Idaho · 4166 days ago · 11 km deep · 42 km away
  16. 2.89 km NW of Challis, Idaho · 4166 days ago · 8 km deep · 20 km away · felt by 2
  17. 2.312 km NW of Challis, Idaho · 4166 days ago · 5 km deep · 23 km away
  18. 2.69 km NW of Challis, Idaho · 4165 days ago · 7 km deep · 20 km away · felt by 3
  19. 2.69 km NW of Challis, Idaho · 4165 days ago · 6 km deep · 20 km away
  20. 2.011 km SE of Challis, Idaho · 4164 days ago · 9 km deep · 1 km away
  21. 2.311 km NNE of Stanley, Idaho · 4164 days ago · 13 km deep · 59 km away
  22. 1.910 km NNE of Stanley, Idaho · 4162 days ago · 11 km deep · 60 km away
  23. 2.010 km NE of Stanley, Idaho · 4160 days ago · 8 km deep · 60 km away

Before

  1. 3.09 km SE of Challis, Idaho · 4221 days ago · 14 km deep · 2 km away · felt by 2
  2. 2.0southern Idaho · 4225 days ago · 11 km deep · 1 km away
  3. 2.4southern Idaho · 4237 days ago · 13 km deep · 2 km away
  4. 3.022 km SE of Challis, Idaho · 4239 days ago · 13 km deep · 12 km away
  5. 1.925 km W of Lima, Montana · 4240 days ago · 2 km deep · 100 km away
  6. 2.012 km SE of Challis, Idaho · 4242 days ago · 8 km deep · 2 km away
  7. 2.822 km SE of Challis, Idaho · 4244 days ago · 14 km deep · 12 km away
  8. 2.98 km SE of Challis, Idaho · 4244 days ago · 14 km deep · 2 km away · felt by 1
  9. 3.722 km SE of Challis, Idaho · 4244 days ago · 14 km deep · 11 km away
  10. 2.510 km SE of Challis, Idaho · 4246 days ago · 13 km deep · 0 km away
  11. 2.910 km SE of Challis, Idaho · 4246 days ago · 12 km deep · 1 km away · felt by 1
  12. 2.89 km SE of Challis, Idaho · 4246 days ago · 11 km deep · 2 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us10001l2f (also filed as mb15818809). Read Tue, Sep 22, 2026, 11:28 PM UTC.