Alaska earthquakes

M4.8 earthquake 186 km S of Atka, Alaska

A magnitude 4.8 earthquake struck 186 km S of Atka, Alaska on Mon, May 26, 1986, 2:09 PM HADT (23:09 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.2 99 km SSW of Atka, Alaska. This one was a foreshock.

More in Alaska

Map

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

Open the live map with earthquakes

The earthquake

Magnitude
4.8 (mb), light
Local time
UTC
1986-05-26 23:09:58 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
50.547° N, 174.640° 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: 12 in the 60 days after this one and 41 in the 30 days before it.

After

  1. 4.3170 km SSW of Atka, Alaska · 14729 days ago · 33 km deep · 17 km away
  2. 4.8113 km SE of Adak, Alaska · 14726 days ago · 33 km deep · 94 km away
  3. 4.4105 km SSW of Atka, Alaska · 14723 days ago · 33 km deep · 99 km away
  4. 5.299 km SSW of Atka, Alaska · 14721 days ago · 33 km deep · 89 km away
  5. 5.493 km SSW of Atka, Alaska · 14721 days ago · 33 km deep · 96 km away
  6. 4.5123 km S of Atka, Alaska · 14719 days ago · 33 km deep · 64 km away
  7. 4.397 km SSW of Atka, Alaska · 14710 days ago · 33 km deep · 95 km away
  8. 4.7100 km SSW of Atka, Alaska · 14703 days ago · 33 km deep · 93 km away
  9. 5.4125 km SE of Adak, Alaska · 14703 days ago · 33 km deep · 83 km away
  10. 4.4135 km SE of Adak, Alaska · 14703 days ago · 33 km deep · 70 km away
  11. 4.2118 km SSW of Atka, Alaska · 14703 days ago · 33 km deep · 91 km away
  12. 4.888 km SSW of Atka, Alaska · 14677 days ago · 33 km deep · 99 km away

Before

  1. 4.896 km SSW of Atka, Alaska · 14730 days ago · 33 km deep · 97 km away
  2. 4.5104 km SE of Adak, Alaska · 14733 days ago · 33 km deep · 98 km away
  3. 4.8201 km SE of Adak, Alaska · 14733 days ago · 33 km deep · 30 km away
  4. 4.6113 km SW of Atka, Alaska · 14735 days ago · 33 km deep · 100 km away
  5. 4.0110 km SSW of Atka, Alaska · 14735 days ago · 33 km deep · 93 km away
  6. 4.0109 km SSW of Atka, Alaska · 14736 days ago · 33 km deep · 97 km away
  7. 4.9110 km SSW of Atka, Alaska · 14736 days ago · 33 km deep · 80 km away
  8. 4.8106 km SE of Adak, Alaska · 14737 days ago · 33 km deep · 97 km away
  9. 5.192 km SSW of Atka, Alaska · 14737 days ago · 33 km deep · 97 km away
  10. 4.4106 km SSW of Atka, Alaska · 14738 days ago · 33 km deep · 99 km away
  11. 4.5133 km SE of Adak, Alaska · 14738 days ago · 33 km deep · 70 km away
  12. 4.3114 km SE of Adak, Alaska · 14739 days ago · 33 km deep · 93 km away
  13. 4.0122 km SSW of Atka, Alaska · 14740 days ago · 33 km deep · 86 km away
  14. 5.198 km SSW of Atka, Alaska · 14741 days ago · 33 km deep · 92 km away
  15. 5.0107 km SSW of Atka, Alaska · 14743 days ago · 33 km deep · 80 km away
  16. 4.7106 km SSW of Atka, Alaska · 14743 days ago · 33 km deep · 86 km away
  17. 5.5Andreanof Islands, Aleutian Islands, Alaska · 14744 days ago · 33 km deep · 97 km away
  18. 4.7116 km SSW of Atka, Alaska · 14745 days ago · 33 km deep · 72 km away
  19. 5.0111 km SE of Adak, Alaska · 14746 days ago · 33 km deep · 91 km away
  20. 5.0Andreanof Islands, Aleutian Islands, Alaska · 14747 days ago · 33 km deep · 95 km away

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002ufg. Read Tue, Sep 22, 2026, 8:57 PM UTC.