M5.5 earthquake 232 km SSE of Atka, Alaska
A magnitude 5.5 earthquake struck 232 km SSE of Atka, Alaska on Mon, Jul 13, 1981, 12:10 PM GMT-10 (22:10 UTC), 6 km (4 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.5 (mb), moderate
- Local time
- UTC
- 1981-07-13 22:10:02 UTC
- Depth
- 6.2 km (3.9 mi), shallow
- Epicenter
- 50.207° N, 173.158° 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.
Nearby
Within 100 km, magnitude 2.5 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 usp0001epa (also filed as gcmtb071381a, ushis3720, gcmt19810713221002, iscgem623604). Read Sat, Sep 26, 2026, 10:32 PM UTC.