M2.1 earthquake 10 km SE of Challis, Idaho
A magnitude 2.1 earthquake struck 10 km SE of Challis, Idaho on Tue, Aug 2, 2016, 4:05 PM MDT (22:05 UTC), 6 km (4 mi) below the surface.
A larger quake followed: M2.3 24 km E of Clayton, Idaho. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.1 (ml), micro
- Local time
- UTC
- 2016-08-02 22:05:17 UTC
- Depth
- 6.3 km (3.9 mi), shallow
- Epicenter
- 44.444° N, 114.137° 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 0.6 km horizontally, 1.1 km in depth
- Magnitude uncertainty
- ±0.11
- Depth from
- From location
- Station coverage gap
- 76°
- 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: 4 in the 60 days after this one and 6 in the 30 days before it.
After
- 2.324 km E of Clayton, Idaho · 3691 days ago · -3 km deep · 22 km away
- 1.719 km NNW of Clayton, Idaho · 3680 days ago · 7 km deep · 28 km away
- 1.717 km SE of Challis, Idaho · 3677 days ago · 4 km deep · 8 km away
- 1.912 km SE of Challis, Idaho · 3655 days ago · 10 km deep · 2 km away
Before
- 1.955 km W of Salmon, Idaho · 3710 days ago · 22 km deep · 82 km away
- 1.716 km NW of Challis, Idaho · 3713 days ago · 3 km deep · 26 km away
- 2.013 km SE of Challis, Idaho · 3732 days ago · 5 km deep · 3 km away
- 1.710 km NW of Challis, Idaho · 3733 days ago · 3 km deep · 20 km away
- 1.69 km NNW of Challis, Idaho · 3738 days ago · 7 km deep · 19 km away
- 1.6Idaho-Montana border region · 3738 days ago · 5 km deep · 31 km away
Earthquakes todayIdaho earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event mb80164099. Read Mon, Sep 28, 2026, 5:27 AM UTC.