M6.2 earthquake 74 km SSW of Unalaska, Alaska
A magnitude 6.2 earthquake struck 74 km SSW of Unalaska, Alaska on Thu, Oct 31, 1985, 10:33 AM AKST (19:33 UTC), 30 km (19 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.2 (mw), strong
- Local time
- UTC
- 1985-10-31 19:33:06 UTC
- Depth
- 30.0 km (18.6 mi), shallow
- Epicenter
- 53.249° N, 166.936° 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 2.5 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.698 km SSW of Unalaska, Alaska · 14936 days ago · 33 km deep · 25 km away
- 3.896 km S of Unalaska, Alaska · 14934 days ago · 33 km deep · 33 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002mbh (also filed as gcmtb103185a, ushis3910, gcmt19851031193307, iscgem514875). Read Tue, Sep 22, 2026, 10:46 AM UTC.