M3.6 earthquake 17 km ESE of Kelly, Wyoming
A magnitude 3.6 earthquake struck 17 km ESE of Kelly, Wyoming on Wed, Feb 24, 2021, 3:43 AM MST (10:43 UTC), 8 km (5 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.6 (ML, local (Richter)), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2021-02-24 10:43:46 UTC
- Depth
- 8.1 km (5.0 mi), shallow
- Epicenter
- 43.585° N, 110.412° W
- Region
- Wyoming
- Felt reports
- 6
- Strongest shaking
- IV, light shaking
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 3.6 | ML, local (Richter) | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.051 · 50 stations |
| 3.92 | ML, local (Richter) | Montana Bureau of Mines and Geology | Final · ±0.239 · 32 stations |
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- IV, light shaking
- Peak ground acceleration
- 2.1% of gravity
- Peak ground velocity
- -0.2 cm/s
- Map
- Automatic
Did you feel it?
6 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 1.9 km horizontally, 5.5 km in depth
- Magnitude uncertainty
- ±0.05
- Depth from
- From location
- Station coverage gap
- 79°
- Stations used
- 83
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 2 in the 30 days before it.
After
- 1.929 km ENE of Alta, Wyoming · 2036 days ago · 10 km deep · 42 km away
- 1.66 km NW of Wilson, Wyoming · 2001 days ago · 1 km deep · 42 km away
Before
Earthquakes todayWyoming earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000dkmw (also filed as mb80488864). Read Mon, Oct 5, 2026, 6:47 AM UTC.