Alaska earthquakes

M5.5 earthquake 122 km SSW of Unalaska, Alaska

A magnitude 5.5 earthquake struck 122 km SSW of Unalaska, Alaska on Sun, Sep 12, 1982, 7:50 AM GMT-9 (16:50 UTC), 33 km (21 mi) below the surface.

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

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The earthquake

Magnitude
5.5 (mb), moderate
Local time
UTC
1982-09-12 16:50:37 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
52.819° N, 167.053° 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: 8 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 4.6151 km ESE of Nikolski, Alaska · 16081 days ago · 33 km deep · 47 km away
  2. 4.6155 km ESE of Nikolski, Alaska · 16081 days ago · 33 km deep · 53 km away
  3. 4.8136 km ESE of Nikolski, Alaska · 16080 days ago · 33 km deep · 27 km away
  4. 4.7129 km SSW of Unalaska, Alaska · 16080 days ago · 33 km deep · 13 km away
  5. 5.0107 km SSW of Unalaska, Alaska · 16077 days ago · 33 km deep · 15 km away
  6. 4.7Fox Islands, Aleutian Islands, Alaska · 16075 days ago · 33 km deep · 49 km away
  7. 4.8133 km ESE of Nikolski, Alaska · 16073 days ago · 33 km deep · 17 km away
  8. 4.5123 km SSW of Unalaska, Alaska · 16072 days ago · 33 km deep · 5 km away

Before

  1. 4.5148 km ESE of Nikolski, Alaska · 16081 days ago · 33 km deep · 40 km away
  2. 5.2138 km S of Unalaska, Alaska · 16081 days ago · 33 km deep · 24 km away
  3. 4.7157 km ESE of Nikolski, Alaska · 16081 days ago · 33 km deep · 59 km away
  4. 4.5152 km ESE of Nikolski, Alaska · 16081 days ago · 33 km deep · 50 km away
  5. 4.7120 km SSW of Unalaska, Alaska · 16081 days ago · 33 km deep · 5 km away
  6. 4.8162 km ESE of Nikolski, Alaska · 16081 days ago · 33 km deep · 63 km away
  7. 5.1102 km SSW of Unalaska, Alaska · 16081 days ago · 33 km deep · 22 km away
  8. 4.8134 km S of Unalaska, Alaska · 16081 days ago · 33 km deep · 19 km away
  9. 5.9133 km ESE of Nikolski, Alaska · 16081 days ago · 33 km deep · 21 km away
  10. 4.8136 km ESE of Nikolski, Alaska · 16090 days ago · 33 km deep · 29 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001pjm (also filed as gcmtb091282b, ushis3762, gcmt19820912165038, iscgem591929). Read Tue, Sep 22, 2026, 9:55 AM UTC.