Alaska earthquakes

M4.5 earthquake 52 km SSW of Adak, Alaska

A magnitude 4.5 earthquake struck 52 km SSW of Adak, Alaska on Mon, Aug 26, 1996, 7:52 AM HADT (16:52 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.5 117 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
4.5 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1996-08-26 16:52:17 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.427° N, 176.887° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
4.5mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · 13 stations
4.5mb, body-waveAlaska Earthquake CenterPreliminary

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 1.5 and up: 13 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 4.268 km S of Adak, Alaska · 10993 days ago · 33 km deep · 27 km away
  2. 4.246 km N of Adak, Alaska · 10992 days ago · 100 km deep · 98 km away
  3. 4.064 km S of Adak, Alaska · 10992 days ago · 33 km deep · 20 km away
  4. 4.4127 km SW of Adak, Alaska · 10990 days ago · 33 km deep · 89 km away
  5. 4.163 km S of Adak, Alaska · 10989 days ago · 33 km deep · 19 km away
  6. 5.5117 km WSW of Adak, Alaska · 10988 days ago · 44 km deep · 93 km away
  7. 4.279 km SSW of Adak, Alaska · 10987 days ago · 33 km deep · 27 km away
  8. 4.274 km SSE of Adak, Alaska · 10980 days ago · 33 km deep · 59 km away
  9. 5.133 km SE of Adak, Alaska · 10980 days ago · 60 km deep · 51 km away
  10. 4.3124 km SW of Adak, Alaska · 10969 days ago · 33 km deep · 76 km away
  11. 4.489 km SSE of Adak, Alaska · 10964 days ago · 33 km deep · 64 km away
  12. 4.784 km SW of Adak, Alaska · 10937 days ago · 33 km deep · 49 km away
  13. 4.754 km SW of Adak, Alaska · 10935 days ago · 42 km deep · 24 km away

Before

  1. 5.138 km SW of Adak, Alaska · 10994 days ago · 33 km deep · 20 km away
  2. 4.595 km SW of Adak, Alaska · 10995 days ago · 33 km deep · 61 km away
  3. 4.261 km SSW of Adak, Alaska · 10997 days ago · 33 km deep · 9 km away
  4. 5.2126 km WSW of Adak, Alaska · 10998 days ago · 33 km deep · 96 km away
  5. 4.364 km S of Adak, Alaska · 11003 days ago · 33 km deep · 25 km away
  6. 4.064 km SSE of Adak, Alaska · 11008 days ago · 33 km deep · 39 km away
  7. 4.1134 km SW of Adak, Alaska · 11010 days ago · 33 km deep · 95 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0007p36 (also filed as ak996azja2iz). Read Thu, Oct 1, 2026, 8:07 PM UTC.