M4.8 earthquake 101 km SSW of Atka, Alaska
A magnitude 4.8 earthquake struck 101 km SSW of Atka, Alaska on Fri, Aug 23, 1985, 2:03 AM HADT (11:03 UTC), 33 km (21 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.8 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1985-08-23 11:03:53 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 51.381° N, 174.855° 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
Nearby
Within 100 km, magnitude 1.8 and up: 1 in the 60 days after this one and 5 in the 30 days before it.
After
Before
- 4.8Andreanof Islands, Aleutian Islands, Alaska · 15014 days ago · 33 km deep · 3 km away
- 4.799 km SSW of Atka, Alaska · 15014 days ago · 33 km deep · 8 km away
- 4.799 km SSW of Atka, Alaska · 15015 days ago · 33 km deep · 12 km away
- 3.897 km SSW of Atka, Alaska · 15015 days ago · 33 km deep · 10 km away
- 4.5101 km SSW of Atka, Alaska · 15015 days ago · 33 km deep · 3 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002j1v. Read Thu, Oct 1, 2026, 9:31 PM UTC.