M3.7 earthquake 40 km SSW of Tanana, Alaska
A magnitude 3.7 earthquake struck 40 km SSW of Tanana, Alaska on Sun, Dec 22, 1985, 3:45 PM AKST (00:45 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M3.9 72 km W of Anderson, 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 (ML, local (Richter)), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1985-12-23 00:45:38 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 64.821° N, 152.265° 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.
- Depth from
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 2 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 usp0002p95. Read Thu, Oct 1, 2026, 7:20 PM UTC.