M2.1 earthquake 18 km N of Dillon, Montana
A magnitude 2.1 earthquake struck 18 km N of Dillon, Montana on Fri, Feb 27, 2015, 4:33 AM MST (11:33 UTC), 10 km (6 mi) below the surface.
Automatic solution: the magnitude and location may still be revised.
A larger quake followed: M2.5 18 km NE of Leadore, 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 (Mc), micro
- Magnitude from
- Montana Bureau of Mines and Geology
- Local time
- UTC
- 2015-02-27 11:33:47 UTC
- Depth
- 9.7 km (6.0 mi), shallow
- Epicenter
- 45.383° N, 112.598° W
- Region
- Montana
- Tsunami flag
- No
- Status
- Automatic solution, may be revised
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
An automatic solution; a seismologist may revise it.
- Location uncertainty
- About 0.5 km horizontally, 0.4 km in depth
- Magnitude uncertainty
- ±0.50
- Station coverage gap
- 97°
- Stations used
- 41
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 4 in the 30 days before it.
After
- 1.816 km ESE of Harrison, Montana · 4235 days ago · 7 km deep · 83 km away
- 1.525 km N of Lima, Montana · 4233 days ago · 11 km deep · 58 km away
- 1.615 km NE of Dillon, Montana · 4226 days ago · 8 km deep · 9 km away
- 2.45 km S of Boulder, Montana · 4223 days ago · 15 km deep · 97 km away
- 2.335 km SE of Wisdom, Montana · 4206 days ago · 8 km deep · 38 km away
- 2.518 km NE of Leadore, Idaho · 4200 days ago · 12 km deep · 81 km away
- 2.434 km SSE of Virginia City, Montana · 4190 days ago · 7 km deep · 73 km away
- 1.75 km SSE of Boulder, Montana · 4188 days ago · 13 km deep · 97 km away
Before
Earthquakes todayMontana earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event mb15569939. Read Sat, Oct 3, 2026, 2:36 AM UTC.