Idaho earthquakes

M2.1 earthquake 10 km SE of Challis, Idaho

A magnitude 2.1 earthquake struck 10 km SE of Challis, Idaho on Sun, Sep 1, 2019, 11:57 AM MDT (17:57 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M2.8 13 km SSE of Clayton, 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
2.1 (ML, local (Richter)), micro
Magnitude from
Montana Bureau of Mines and Geology
Local time
UTC
2019-09-01 17:57:03 UTC
Depth
10.2 km (6.4 mi), shallow
Epicenter
44.440° N, 114.131° 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 0.5 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.26
Depth from
From location
Station coverage gap
128°
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 2.612 km SE of Challis, Idaho · 2591 days ago · 10 km deep · 3 km away · felt by 2
  2. 1.67 km NW of Challis, Idaho · 2589 days ago · 10 km deep · 19 km away
  3. 2.813 km SSE of Clayton, Idaho · 2570 days ago · 10 km deep · 36 km away · felt by 1
  4. 2.417 km SSE of Clayton, Idaho · 2570 days ago · 10 km deep · 39 km away
  5. 1.916 km SE of Challis, Idaho · 2569 days ago · 7 km deep · 6 km away
  6. 2.114 km SE of Challis, Idaho · 2569 days ago · 7 km deep · 5 km away
  7. 1.611 km SE of Challis, Idaho · 2559 days ago · 9 km deep · 1 km away
  8. 1.7southern Idaho · 2556 days ago · 9 km deep · 25 km away
  9. 1.636 km SSW of Salmon, Idaho · 2547 days ago · 9 km deep · 49 km away

Before

  1. 1.611 km WSW of Challis, Idaho · 2595 days ago · 10 km deep · 20 km away
  2. 1.916 km NNE of Challis, Idaho · 2596 days ago · 10 km deep · 22 km away
  3. 1.825 km SSW of Clayton, Idaho · 2603 days ago · 10 km deep · 52 km away
  4. 1.535 km NW of Mackay, Idaho · 2608 days ago · 7 km deep · 37 km away · felt by 1
  5. 2.317 km NNE of Challis, Idaho · 2609 days ago · 5 km deep · 23 km away
  6. 1.912 km NW of Challis, Idaho · 2609 days ago · 5 km deep · 23 km away
  7. 1.620 km WSW of Salmon, Idaho · 2609 days ago · 3 km deep · 77 km away
  8. 1.720 km NW of Challis, Idaho · 2612 days ago · 4 km deep · 31 km away
  9. 1.917 km NNE of Challis, Idaho · 2613 days ago · 7 km deep · 22 km away
  10. 1.515 km NE of Challis, Idaho · 2613 days ago · 1 km deep · 17 km away
  11. 3.219 km NNE of Challis, Idaho · 2614 days ago · 10 km deep · 26 km away · felt by 5

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event mb80359274. Read Mon, Oct 5, 2026, 8:10 AM UTC.