Alaska earthquakes

M4.6 earthquake 139 km WSW of Adak, Alaska

A magnitude 4.6 earthquake struck 139 km WSW of Adak, Alaska on Fri, Dec 27, 1996, 8:21 PM HAST (06:21 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.7 117 km WSW of Adak, Alaska. This one was a foreshock.

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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
4.6 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1996-12-28 06:21:34 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.586° N, 178.593° 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 1.6 and up: 7 in the 60 days after this one and 21 in the 30 days before it.

After

  1. 4.347 km WSW of Adak, Alaska · 10864 days ago · 60 km deep · 94 km away
  2. 3.4141 km WSW of Adak, Alaska · 10858 days ago · 33 km deep · 8 km away
  3. 5.7117 km WSW of Adak, Alaska · 10851 days ago · 33 km deep · 27 km away
  4. 4.6146 km WNW of Adak, Alaska · 10844 days ago · 173 km deep · 90 km away
  5. 3.298 km W of Adak, Alaska · 10821 days ago · 33 km deep · 43 km away
  6. 3.793 km WSW of Adak, Alaska · 10819 days ago · 33 km deep · 50 km away
  7. 3.3182 km WSW of Adak, Alaska · 10816 days ago · 33 km deep · 64 km away

Before

  1. 4.161 km W of Adak, Alaska · 10883 days ago · 10 km deep · 77 km away
  2. 4.3138 km W of Adak, Alaska · 10884 days ago · 33 km deep · 10 km away
  3. 4.552 km WSW of Adak, Alaska · 10888 days ago · 10 km deep · 87 km away
  4. 4.762 km WSW of Adak, Alaska · 10888 days ago · 10 km deep · 78 km away
  5. 4.562 km WSW of Adak, Alaska · 10888 days ago · 10 km deep · 79 km away
  6. 4.557 km W of Adak, Alaska · 10888 days ago · 10 km deep · 81 km away
  7. 3.156 km WSW of Adak, Alaska · 10888 days ago · 10 km deep · 83 km away
  8. 3.866 km WSW of Adak, Alaska · 10888 days ago · 10 km deep · 74 km away
  9. 3.255 km W of Adak, Alaska · 10888 days ago · 10 km deep · 83 km away
  10. 4.558 km WSW of Adak, Alaska · 10888 days ago · 10 km deep · 82 km away
  11. 4.659 km W of Adak, Alaska · 10888 days ago · 10 km deep · 83 km away
  12. 4.365 km WSW of Adak, Alaska · 10888 days ago · 10 km deep · 74 km away
  13. 4.958 km WSW of Adak, Alaska · 10888 days ago · 10 km deep · 84 km away
  14. 3.459 km W of Adak, Alaska · 10889 days ago · 10 km deep · 82 km away
  15. 3.761 km WSW of Adak, Alaska · 10889 days ago · 10 km deep · 79 km away
  16. 3.656 km W of Adak, Alaska · 10890 days ago · 10 km deep · 83 km away
  17. 4.860 km W of Adak, Alaska · 10890 days ago · 10 km deep · 80 km away
  18. 4.862 km W of Adak, Alaska · 10890 days ago · 10 km deep · 77 km away
  19. 4.561 km W of Adak, Alaska · 10890 days ago · 10 km deep · 78 km away
  20. 5.4Andreanof Islands, Aleutian Islands, Alaska · 10890 days ago · 10 km deep · 76 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0007v3r. Read Sun, Oct 4, 2026, 6:30 PM UTC.