Idaho earthquakes

M2.6 earthquake 38 km NNW of Stanley, Idaho

A magnitude 2.6 earthquake struck 38 km NNW of Stanley, Idaho on Wed, Apr 27, 2016, 9:11 PM MDT (03:11 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M2.9 9 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
2.6 (ml), micro
Local time
UTC
2016-04-28 03:11:00 UTC
Depth
4.5 km (2.8 mi), shallow
Epicenter
44.553° N, 115.062° 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 2.3 km horizontally, 7.4 km in depth
Magnitude uncertainty
±0.17
Station coverage gap
75°
Stations used
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 2.2southern Idaho · 3783 days ago · 8 km deep · 63 km away
  2. 2.16 km N of Stanley, Idaho · 3777 days ago · 12 km deep · 33 km away
  3. 1.614 km SW of Clayton, Idaho · 3772 days ago · 6 km deep · 59 km away
  4. 2.1southern Idaho · 3762 days ago · 8 km deep · 75 km away
  5. 1.837 km NNW of Stanley, Idaho · 3758 days ago · 5 km deep · 1 km away
  6. 2.320 km SE of Challis, Idaho · 3758 days ago · 10 km deep · 82 km away
  7. 1.76 km NNW of Challis, Idaho · 3758 days ago · -2 km deep · 62 km away
  8. 2.99 km SE of Challis, Idaho · 3750 days ago · 7 km deep · 75 km away

Before

  1. 1.640 km NNW of Stanley, Idaho · 3806 days ago · 9 km deep · 2 km away
  2. 1.64 km NW of Challis, Idaho · 3811 days ago · 7 km deep · 62 km away
  3. 1.514 km NE of Challis, Idaho · 3815 days ago · 6 km deep · 75 km away
  4. 1.98 km SSW of Cascade, Idaho · 3823 days ago · 18 km deep · 82 km away
  5. 1.919 km NE of Challis, Idaho · 3831 days ago · 7 km deep · 79 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us10005c67 (also filed as mb80141269). Read Mon, Sep 28, 2026, 10:26 PM UTC.