Idaho earthquakes

M1.5 earthquake 35 km NW of Mackay, Idaho

A magnitude 1.5 earthquake struck 35 km NW of Mackay, Idaho on Thu, Aug 15, 2019, 6:00 AM MDT (12:00 UTC), 7 km (4 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
1.5 (ML, local (Richter)), micro
Magnitude from
Montana Bureau of Mines and Geology
Local time
UTC
2019-08-15 12:00:54 UTC
Depth
6.8 km (4.2 mi), shallow
Epicenter
44.132° N, 113.942° W
Region
Idaho
Felt reports
1
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

1 person 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 2.2 km horizontally, 1.6 km in depth
Magnitude uncertainty
±0.29
Depth from
From location
Station coverage gap
146°
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: 12 in the 60 days after this one and 16 in the 30 days before it.

After

  1. 1.825 km SSW of Clayton, Idaho · 2602 days ago · 10 km deep · 44 km away
  2. 1.916 km NNE of Challis, Idaho · 2596 days ago · 10 km deep · 58 km away
  3. 1.611 km WSW of Challis, Idaho · 2595 days ago · 10 km deep · 52 km away
  4. 2.110 km SE of Challis, Idaho · 2590 days ago · 10 km deep · 37 km away
  5. 2.612 km SE of Challis, Idaho · 2590 days ago · 10 km deep · 35 km away · felt by 2
  6. 1.67 km NW of Challis, Idaho · 2589 days ago · 10 km deep · 55 km away
  7. 2.813 km SSE of Clayton, Idaho · 2570 days ago · 10 km deep · 32 km away · felt by 1
  8. 2.417 km SSE of Clayton, Idaho · 2570 days ago · 10 km deep · 29 km away
  9. 1.916 km SE of Challis, Idaho · 2569 days ago · 7 km deep · 31 km away
  10. 2.114 km SE of Challis, Idaho · 2569 days ago · 7 km deep · 33 km away
  11. 1.611 km SE of Challis, Idaho · 2559 days ago · 9 km deep · 37 km away
  12. 1.7southern Idaho · 2556 days ago · 9 km deep · 19 km away

Before

  1. 2.317 km NNE of Challis, Idaho · 2609 days ago · 5 km deep · 60 km away
  2. 1.912 km NW of Challis, Idaho · 2609 days ago · 5 km deep · 60 km away
  3. 1.720 km NW of Challis, Idaho · 2612 days ago · 4 km deep · 66 km away
  4. 1.917 km NNE of Challis, Idaho · 2613 days ago · 7 km deep · 58 km away
  5. 1.515 km NE of Challis, Idaho · 2613 days ago · 1 km deep · 52 km away
  6. 3.219 km NNE of Challis, Idaho · 2614 days ago · 10 km deep · 62 km away · felt by 5
  7. 1.620 km N of Stanley, Idaho · 2624 days ago · 2 km deep · 87 km away
  8. 2.219 km N of Stanley, Idaho · 2624 days ago · 4 km deep · 87 km away
  9. 1.920 km N of Stanley, Idaho · 2624 days ago · 4 km deep · 87 km away
  10. 1.821 km N of Stanley, Idaho · 2624 days ago · 5 km deep · 88 km away
  11. 1.920 km N of Stanley, Idaho · 2624 days ago · 4 km deep · 88 km away
  12. 2.420 km N of Stanley, Idaho · 2624 days ago · 4 km deep · 87 km away
  13. 2.421 km N of Stanley, Idaho · 2624 days ago · 3 km deep · 88 km away
  14. 2.312 km NNW of Challis, Idaho · 2625 days ago · 6 km deep · 59 km away
  15. 2.513 km NW of Challis, Idaho · 2633 days ago · 5 km deep · 61 km away
  16. 1.85 km NNW of Challis, Idaho · 2634 days ago · 10 km deep · 53 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event mb80357484. Read Mon, Oct 5, 2026, 4:15 AM UTC.