Idaho earthquakes

M2.8 earthquake 9 km NW of Challis, Idaho

A magnitude 2.8 earthquake struck 9 km NW of Challis, Idaho on Mon, Apr 27, 2015, 5:37 PM MDT (23:37 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M2.9 9 km NW 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.

Open the live map with earthquakes

The earthquake

Magnitude
2.8 (ml), micro
Local time
UTC
2015-04-27 23:37:03 UTC
Depth
7.7 km (4.8 mi), shallow
Epicenter
44.573° N, 114.304° W
Region
Idaho
Felt reports
2
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

2 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

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 1.9 km horizontally, 3.7 km in depth
Station coverage gap
53°
Stations used
41

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 36 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 2.312 km NW of Challis, Idaho · 4166 days ago · 5 km deep · 3 km away
  2. 2.69 km NW of Challis, Idaho · 4165 days ago · 7 km deep · 1 km away · felt by 3
  3. 2.69 km NW of Challis, Idaho · 4165 days ago · 6 km deep · 1 km away
  4. 2.011 km SE of Challis, Idaho · 4164 days ago · 9 km deep · 21 km away
  5. 2.311 km NNE of Stanley, Idaho · 4164 days ago · 13 km deep · 53 km away
  6. 1.910 km NNE of Stanley, Idaho · 4162 days ago · 11 km deep · 54 km away
  7. 2.010 km NE of Stanley, Idaho · 4161 days ago · 8 km deep · 54 km away
  8. 2.99 km NW of Challis, Idaho · 4158 days ago · 7 km deep · 0 km away
  9. 1.811 km NNE of Stanley, Idaho · 4156 days ago · 11 km deep · 54 km away
  10. 2.410 km NNE of Stanley, Idaho · 4156 days ago · 11 km deep · 55 km away
  11. 1.911 km NNE of Stanley, Idaho · 4156 days ago · 9 km deep · 54 km away
  12. 2.710 km NNE of Stanley, Idaho · 4156 days ago · 13 km deep · 55 km away
  13. 2.08 km NNE of Stanley, Idaho · 4156 days ago · 10 km deep · 56 km away
  14. 2.010 km NE of Stanley, Idaho · 4155 days ago · 12 km deep · 54 km away
  15. 1.811 km NNE of Stanley, Idaho · 4155 days ago · 11 km deep · 55 km away
  16. 2.011 km NNE of Stanley, Idaho · 4155 days ago · 13 km deep · 54 km away
  17. 2.112 km NNE of Stanley, Idaho · 4155 days ago · 13 km deep · 54 km away
  18. 2.011 km NNE of Stanley, Idaho · 4155 days ago · 11 km deep · 54 km away
  19. 3.012 km NNE of Stanley, Idaho · 4155 days ago · 12 km deep · 54 km away · felt by 2
  20. 1.810 km NE of Stanley, Idaho · 4155 days ago · 13 km deep · 54 km away
  21. 1.911 km NNE of Stanley, Idaho · 4154 days ago · 12 km deep · 54 km away
  22. 2.111 km NNE of Stanley, Idaho · 4154 days ago · 14 km deep · 54 km away
  23. 2.612 km NNE of Stanley, Idaho · 4149 days ago · 18 km deep · 53 km away
  24. 3.312 km SE of Challis, Idaho · 4145 days ago · 6 km deep · 22 km away · felt by 2
  25. 3.011 km NNE of Stanley, Idaho · 4144 days ago · 13 km deep · 54 km away
  26. 2.012 km SE of Challis, Idaho · 4139 days ago · 10 km deep · 22 km away
  27. 1.98 km NW of Challis, Idaho · 4138 days ago · 8 km deep · 1 km away
  28. 2.311 km ESE of Challis, Idaho · 4136 days ago · 12 km deep · 21 km away
  29. 1.617 km S of Clayton, Idaho · 4132 days ago · 7 km deep · 54 km away
  30. 1.540 km ESE of Salmon, Idaho · 4131 days ago · 10 km deep · 92 km away
  31. 2.337 km NW of Challis, Idaho · 4127 days ago · 11 km deep · 28 km away
  32. 2.09 km NW of Challis, Idaho · 4127 days ago · 7 km deep · 0 km away
  33. 3.214 km SE of Challis, Idaho · 4126 days ago · 5 km deep · 24 km away
  34. 1.635 km SSE of Salmon, Idaho · 4125 days ago · 10 km deep · 54 km away
  35. 2.322 km NNE of Sun Valley, Idaho · 4123 days ago · 13 km deep · 76 km away
  36. 2.313 km WNW of Clayton, Idaho · 4122 days ago · 12 km deep · 38 km away

Before

  1. 2.116 km W of Clayton, Idaho · 4166 days ago · 11 km deep · 42 km away
  2. 1.923 km SW of Leadore, Idaho · 4166 days ago · 11 km deep · 58 km away
  3. 2.337 km NW of Challis, Idaho · 4172 days ago · 11 km deep · 28 km away
  4. 2.67 km SE of Challis, Idaho · 4173 days ago · 12 km deep · 17 km away
  5. 1.623 km SW of Leadore, Idaho · 4182 days ago · 13 km deep · 59 km away
  6. 2.110 km SE of Challis, Idaho · 4189 days ago · 12 km deep · 20 km away
  7. 2.518 km NE of Leadore, Idaho · 4190 days ago · 12 km deep · 93 km away
  8. 2.08 km SE of Challis, Idaho · 4192 days ago · 12 km deep · 18 km away
  9. 2.115 km NNW of Challis, Idaho · 4195 days ago · 4 km deep · 6 km away
  10. 2.012 km N of Challis, Idaho · 4195 days ago · 11 km deep · 7 km away

Earthquakes todayIdaho earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us200029qe (also filed as mb15016567). Read Wed, Sep 23, 2026, 2:35 AM UTC.