Idaho earthquakes

M2.1 earthquake 8 km N of Stanley, Idaho

A magnitude 2.1 earthquake struck 8 km N of Stanley, Idaho on Thu, Sep 21, 2017, 7:07 PM MDT (01:07 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M2.7 32 km NNE of Lowman, 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
2.1 (ML, local (Richter)), micro
Magnitude from
Montana Bureau of Mines and Geology
Local time
UTC
2017-09-22 01:07:21 UTC
Depth
3.5 km (2.2 mi), shallow
Epicenter
44.293° N, 114.930° 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.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 0.4 km horizontally, 2.6 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
73°
Stations used
11

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 2.6southern Idaho · 3292 days ago · 5 km deep · 65 km away · felt by 1
  2. 1.614 km W of Clayton, Idaho · 3283 days ago · 4 km deep · 28 km away
  3. 1.913 km W of Clayton, Idaho · 3274 days ago · 4 km deep · 29 km away
  4. 2.732 km NNE of Lowman, Idaho · 3274 days ago · 13 km deep · 43 km away · felt by 1
  5. 1.714 km SE of Challis, Idaho · 3272 days ago · 13 km deep · 66 km away
  6. 1.86 km NW of Challis, Idaho · 3260 days ago · 6 km deep · 59 km away
  7. 2.025 km SE of Challis, Idaho · 3259 days ago · 7 km deep · 72 km away
  8. 2.46 km NNW of Idaho City, Idaho · 3255 days ago · 18 km deep · 87 km away
  9. 1.722 km SSW of Clayton, Idaho · 3250 days ago · 9 km deep · 42 km away
  10. 2.222 km SSW of Clayton, Idaho · 3250 days ago · 6 km deep · 41 km away
  11. 2.422 km SSW of Clayton, Idaho · 3242 days ago · 10 km deep · 43 km away · felt by 4
  12. 2.114 km E of Cascade, Idaho · 3239 days ago · 10 km deep · 77 km away

Before

  1. 2.19 km N of Stanley, Idaho · 3298 days ago · 10 km deep · 1 km away
  2. 1.911 km W of Clayton, Idaho · 3306 days ago · 10 km deep · 31 km away
  3. 1.615 km WSW of Challis, Idaho · 3309 days ago · 7 km deep · 45 km away
  4. 1.514 km W of Clayton, Idaho · 3323 days ago · 4 km deep · 28 km away
  5. 2.09 km NNE of Challis, Idaho · 3326 days ago · 10 km deep · 68 km away

Earthquakes todayIdaho earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event mb80256969. Read Fri, Oct 2, 2026, 4:03 PM UTC.