M1.6 earthquake 26 km ENE of Leadore, Idaho
A magnitude 1.6 earthquake struck 26 km ENE of Leadore, Idaho on Tue, Nov 20, 2018, 5:53 PM MST (00:53 UTC), 4 km (2 mi) below the surface.
A larger quake followed: M2.8 8 km ESE of Challis, Idaho. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.6 (ML, local (Richter)), micro
- Magnitude from
- Montana Bureau of Mines and Geology
- Local time
- UTC
- 2018-11-21 00:53:35 UTC
- Depth
- 3.8 km (2.4 mi), shallow
- Epicenter
- 44.789° N, 113.062° W
- Region
- Montana
- 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 1.1 km horizontally, 4.0 km in depth
- Magnitude uncertainty
- ±0.11
- Depth from
- From location
- Station coverage gap
- 141°
- 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: 6 in the 60 days after this one and 6 in the 30 days before it.
After
- 2.88 km ESE of Challis, Idaho · 2868 days ago · 5 km deep · 93 km away · felt by 3
- 2.615 km N of Dillon, Montana · 2852 days ago · 8 km deep · 72 km away · felt by 4
- 1.523 km SSE of Leadore, Idaho · 2852 days ago · 8 km deep · 34 km away · felt by 1
- 2.420 km SE of Challis, Idaho · 2849 days ago · 5 km deep · 92 km away
- 1.913 km N of Dillon, Montana · 2847 days ago · 9 km deep · 70 km away
- 2.139 km SSW of Lima, Montana · 2834 days ago · 9 km deep · 58 km away
Before
- 2.034 km SE of Dillon, Montana · 2877 days ago · 7 km deep · 62 km away
- 1.72 km N of Challis, Idaho · 2880 days ago · 1 km deep · 97 km away
- 1.729 km WSW of Dillon, Montana · 2881 days ago · 8 km deep · 35 km away
- 1.728 km WSW of Dillon, Montana · 2881 days ago · 8 km deep · 35 km away
- 2.028 km WSW of Dillon, Montana · 2881 days ago · 8 km deep · 35 km away
- 1.532 km SW of Lima, Montana · 2886 days ago · 8 km deep · 47 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event mb80325294. Read Sat, Oct 3, 2026, 4:14 PM UTC.