M2.5 earthquake 38 km WSW of Augusta, Montana
A magnitude 2.5 earthquake struck 38 km WSW of Augusta, Montana on Wed, Mar 22, 2017, 3:12 PM MDT (21:12 UTC), 15 km (9 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.5 (ML, local (Richter)), micro
- Magnitude from
- Montana Bureau of Mines and Geology
- Local time
- UTC
- 2017-03-22 21:12:50 UTC
- Depth
- 15.0 km (9.3 mi), shallow
- Epicenter
- 47.324° N, 112.834° W
- Region
- Montana
- 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 |
|---|---|---|---|
| 2.52 | ML, local (Richter) | Montana Bureau of Mines and Geology | Preferred · Final · ±0.219 · 10 stations |
| 2.3 | ML, local (Richter) | USGS National Earthquake Information Center | Reviewed · ±0.091 · 16 stations |
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, 0.8 km in depth
- Magnitude uncertainty
- ±0.22
- Depth from
- From location
- Station coverage gap
- 153°
- Stations used
- 27
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 9 in the 30 days before it.
After
Before
- 2.64 km SE of Avon, Montana · 3483 days ago · 14 km deep · 87 km away · felt by 2
- 1.84 km SE of Avon, Montana · 3490 days ago · 12 km deep · 87 km away
- 1.510 km NNE of Lincoln, Montana · 3491 days ago · 8 km deep · 36 km away
- 1.74 km SE of Avon, Montana · 3491 days ago · 15 km deep · 86 km away
- 3.84 km ESE of Avon, Montana · 3492 days ago · 20 km deep · 86 km away · felt by 231
- 3.49 km ENE of Marysville, Montana · 3498 days ago · 11 km deep · 76 km away · felt by 53
- 2.418 km ESE of Ovando, Montana · 3503 days ago · 11 km deep · 43 km away
- 1.535 km NE of Seeley Lake, Montana · 3506 days ago · 14 km deep · 21 km away
- 2.412 km ESE of Lincoln, Montana · 3508 days ago · 11 km deep · 53 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event mb80202754 (also filed as us20008tws). Read Sat, Oct 3, 2026, 5:20 PM UTC.