Alaska earthquakes

M4.7 earthquake 129 km SSW of Unalaska, Alaska

A magnitude 4.7 earthquake struck 129 km SSW of Unalaska, Alaska on Mon, Sep 13, 1982, 2:34 AM GMT-9 (11:34 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.0 107 km SSW of Unalaska, Alaska. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
4.7 (mb), light
Local time
UTC
1982-09-13 11:34:55 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
52.734° N, 166.920° 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 1.7 and up: 4 in the 60 days after this one and 14 in the 30 days before it.

After

  1. 5.0107 km SSW of Unalaska, Alaska · 16077 days ago · 33 km deep · 25 km away
  2. 4.7Fox Islands, Aleutian Islands, Alaska · 16075 days ago · 33 km deep · 59 km away
  3. 4.8133 km ESE of Nikolski, Alaska · 16073 days ago · 33 km deep · 5 km away
  4. 4.5123 km SSW of Unalaska, Alaska · 16072 days ago · 33 km deep · 8 km away

Before

  1. 4.8136 km ESE of Nikolski, Alaska · 16080 days ago · 33 km deep · 16 km away
  2. 4.6155 km ESE of Nikolski, Alaska · 16081 days ago · 33 km deep · 41 km away
  3. 4.6151 km ESE of Nikolski, Alaska · 16081 days ago · 33 km deep · 35 km away
  4. 5.5122 km SSW of Unalaska, Alaska · 16081 days ago · 33 km deep · 13 km away
  5. 4.5148 km ESE of Nikolski, Alaska · 16081 days ago · 33 km deep · 28 km away
  6. 5.2138 km S of Unalaska, Alaska · 16081 days ago · 33 km deep · 11 km away
  7. 4.7157 km ESE of Nikolski, Alaska · 16081 days ago · 33 km deep · 47 km away
  8. 4.5152 km ESE of Nikolski, Alaska · 16081 days ago · 33 km deep · 38 km away
  9. 4.7120 km SSW of Unalaska, Alaska · 16081 days ago · 33 km deep · 11 km away
  10. 4.8162 km ESE of Nikolski, Alaska · 16081 days ago · 33 km deep · 51 km away
  11. 5.1102 km SSW of Unalaska, Alaska · 16081 days ago · 33 km deep · 34 km away
  12. 4.8134 km S of Unalaska, Alaska · 16081 days ago · 33 km deep · 6 km away
  13. 5.9133 km ESE of Nikolski, Alaska · 16081 days ago · 33 km deep · 11 km away
  14. 4.8136 km ESE of Nikolski, Alaska · 16090 days ago · 33 km deep · 18 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001pk4. Read Tue, Sep 22, 2026, 11:09 AM UTC.