Alaska earthquakes

M5.0 earthquake 135 km SSW of Atka, Alaska

A magnitude 5.0 earthquake struck 135 km SSW of Atka, Alaska on Mon, Dec 14, 1987, 3:44 AM HAST (13:44 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.5 95 km SSW of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude
5.0 (mb), moderate
Local time
UTC
1987-12-14 13:44:08 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.102° N, 175.061° 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 2.0 and up: 17 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 4.979 km SE of Adak, Alaska · 14161 days ago · 33 km deep · 63 km away
  2. 4.397 km SW of Atka, Alaska · 14151 days ago · 33 km deep · 49 km away
  3. 5.595 km SSW of Atka, Alaska · 14132 days ago · 33 km deep · 43 km away
  4. 5.5103 km SSW of Atka, Alaska · 14132 days ago · 33 km deep · 37 km away
  5. 5.2103 km SSW of Atka, Alaska · 14132 days ago · 33 km deep · 34 km away
  6. 5.1100 km SSW of Atka, Alaska · 14132 days ago · 33 km deep · 38 km away
  7. 5.383 km SSW of Atka, Alaska · 14132 days ago · 33 km deep · 52 km away
  8. 5.193 km SSW of Atka, Alaska · 14132 days ago · 33 km deep · 43 km away
  9. 5.0108 km S of Atka, Alaska · 14124 days ago · 33 km deep · 57 km away
  10. 4.781 km S of Atka, Alaska · 14124 days ago · 33 km deep · 72 km away
  11. 4.886 km S of Atka, Alaska · 14123 days ago · 33 km deep · 71 km away
  12. 5.085 km S of Atka, Alaska · 14123 days ago · 33 km deep · 67 km away
  13. 4.699 km S of Atka, Alaska · 14122 days ago · 33 km deep · 59 km away
  14. 5.085 km S of Atka, Alaska · 14122 days ago · 33 km deep · 65 km away
  15. 5.088 km S of Atka, Alaska · 14122 days ago · 48 km deep · 64 km away
  16. 4.670 km S of Atka, Alaska · 14122 days ago · 33 km deep · 78 km away
  17. 4.892 km S of Atka, Alaska · 14122 days ago · 33 km deep · 63 km away

Before

  1. 4.679 km E of Adak, Alaska · 14166 days ago · 33 km deep · 93 km away
  2. 4.6114 km SE of Adak, Alaska · 14172 days ago · 33 km deep · 25 km away
  3. 4.7111 km S of Atka, Alaska · 14188 days ago · 33 km deep · 53 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0003b9a. Read Tue, Sep 22, 2026, 10:44 AM UTC.