M2.6 earthquake 17 km SSE of Harrison, Montana
A magnitude 2.6 earthquake struck 17 km SSE of Harrison, Montana on Sun, Sep 6, 1987, 2:33 PM MDT (20:33 UTC), 3 km (2 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.6 (ml), micro
- Local time
- UTC
- 1987-09-06 20:33:33 UTC
- Depth
- 2.8 km (1.7 mi), shallow
- Epicenter
- 45.555° N, 111.720° 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.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 0 in the 60 days after this one and 13 in the 30 days before it.
Before
- 2.615 km SSE of Harrison, Montana · 14266 days ago · 4 km deep · 2 km away
- 2.116 km SSE of Harrison, Montana · 14271 days ago · 4 km deep · 3 km away
- 2.519 km SSE of Harrison, Montana · 14273 days ago · 6 km deep · 4 km away
- 2.919 km SSE of Harrison, Montana · 14275 days ago · 6 km deep · 4 km away
- 2.518 km SSE of Harrison, Montana · 14276 days ago · 5 km deep · 3 km away
- 2.718 km SSE of Harrison, Montana · 14278 days ago · 5 km deep · 4 km away
- 3.419 km SSE of Harrison, Montana · 14279 days ago · 6 km deep · 4 km away
- 3.011 km SSE of Harrison, Montana · 14279 days ago · 2 km deep · 6 km away
- 3.520 km SSE of Harrison, Montana · 14279 days ago · 5 km deep · 5 km away
- 2.817 km SSE of Harrison, Montana · 14287 days ago · 4 km deep · 2 km away
- 2.819 km SSE of Harrison, Montana · 14288 days ago · 4 km deep · 3 km away
- 2.017 km SSE of Harrison, Montana · 14290 days ago · 3 km deep · 1 km away
- 2.817 km SSE of Harrison, Montana · 14291 days ago · 3 km deep · 1 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000385c. Read Tue, Sep 22, 2026, 9:41 PM UTC.