M4.8 earthquake 81 km SSE of Atka, Alaska
A magnitude 4.8 earthquake struck 81 km SSE of Atka, Alaska on Tue, Aug 30, 1977, 10:58 PM GMT-10 (08:58 UTC), 43 km (27 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), light
- Local time
- UTC
- 1977-08-31 08:58:27 UTC
- Depth
- 43.0 km (26.7 mi), shallow
- Epicenter
- 51.499° N, 173.853° 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
- CONSTRAINED_BY_DEPTH_PHASES
- Stations used
- 59
Nearby
Within 100 km, magnitude 1.8 and up: 0 in the 60 days after this one and 6 in the 30 days before it.
Before
- 5.495 km SSE of Atka, Alaska · 17920 days ago · 33 km deep · 14 km away
- 4.654 km SSE of Atka, Alaska · 17920 days ago · 42 km deep · 27 km away
- 4.861 km SSE of Atka, Alaska · 17921 days ago · 30 km deep · 19 km away
- 4.660 km SSE of Atka, Alaska · 17921 days ago · 37 km deep · 22 km away
- 5.472 km SSE of Atka, Alaska · 17921 days ago · 25 km deep · 11 km away
- 4.278 km WSW of Atka, Alaska · 17932 days ago · 33 km deep · 99 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000qe2. Read Tue, Sep 22, 2026, 10:44 AM UTC.