M6.7 earthquake 76 km SSE of Adak, Alaska
A magnitude 6.7 earthquake struck 76 km SSE of Adak, Alaska on Sun, Dec 10, 1905, 1:35 AM GMT-11 (12:35 UTC), 35 km (22 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.7 (Mw, moment), strong
- Magnitude from
- ISC-GEM global catalog
- Local time
- UTC
- 1905-12-10 12:35:03 UTC
- Depth
- 35.0 km (21.7 mi), shallow
- Epicenter
- 51.247° N, 176.193° 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 |
|---|---|---|---|
| 6.71 | Mw, moment | ISC-GEM global catalog | Preferred · Final · ±0.2 |
| 6.9 | Ms, surface-wave | USGS historic United States catalog | Final |
What happened
The USGS’s account of the effects of this earthquake.
No macroseismic information has been found for this event, at either location.
Note that the two location computations for this event are more than 1000 km apart.
From the USGS event page for iscgem16957880. U.S. Geological Survey text and figures are in the public domain.
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Magnitude uncertainty
- ±0.20
- Depth from
- From location
Nearby
Within 100 km, magnitude 3.7 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 iscgem16957880 (also filed as ushis444). Read Thu, Oct 1, 2026, 6:41 PM UTC.