M3.1 earthquake 157 km NE of Atka, Alaska
A magnitude 3.1 earthquake struck 157 km NE of Atka, Alaska on Mon, Dec 5, 2016, 7:57 AM HAST (17:57 UTC), 259 km (161 mi) below the surface.
A larger quake followed: M3.6 174 km ENE of Atka, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.1 (ML, local (Richter)), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2016-12-05 17:57:25 UTC
- Depth
- 259.0 km (160.9 mi), intermediate-depth
- Epicenter
- 53.198° N, 172.554° W
- Region
- Alaska
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 3.1 | ML, local (Richter) | USGS National Earthquake Information Center | Preferred · Reviewed |
| 3.1 | ML, local (Richter) | Alaska Earthquake Center | Preliminary |
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 19.9 km horizontally, 9.9 km in depth
- Stations used
- 16
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 us20007zlc (also filed as ak14706339, ak016fml6mym). Read Sun, Oct 4, 2026, 9:10 AM UTC.