M3.7 earthquake 9 km SW of Butte, Alaska
A magnitude 3.7 earthquake struck 9 km SW of Butte, Alaska on Mon, Dec 1, 1975, 12:15 PM GMT-10 (22:15 UTC), 42 km (26 mi) below the surface.
A larger quake followed: M3.9 57 km N of Chickaloon, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.7 (mb), minor
- Local time
- UTC
- 1975-12-01 22:15:21 UTC
- Depth
- 42.0 km (26.1 mi), shallow
- Epicenter
- 61.471° N, 149.136° W
- Region
- Alaska
- 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
- 17
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000dtf. Read Tue, Sep 22, 2026, 7:25 AM UTC.