M2.8 earthquake 52 km SW of Circle, Montana
A magnitude 2.8 earthquake struck 52 km SW of Circle, Montana on Wed, Sep 26, 1973, 12:38 PM MDT (18:38 UTC), 25 km (16 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.8 (lg), micro
- Local time
- UTC
- 1973-09-26 18:38:26 UTC
- Depth
- 25.0 km (15.5 mi), shallow
- Epicenter
- 47.120° N, 106.133° 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.
- Stations used
- 8
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 0 in the 30 days before it.
None recorded.
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00003ju. Read Tue, Sep 22, 2026, 9:45 AM UTC.