Alaska earthquakes

M4.6 earthquake 99 km S of Atka, Alaska

A magnitude 4.6 earthquake struck 99 km S of Atka, Alaska on Fri, Jan 22, 1988, 2:27 PM HAST (00:27 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.0 85 km S of Atka, 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), light
Local time
UTC
1988-01-23 00:27:06 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.300° N, 174.283° 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: 6 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 5.085 km S of Atka, Alaska · 14122 days ago · 33 km deep · 15 km away
  2. 5.088 km S of Atka, Alaska · 14122 days ago · 48 km deep · 11 km away
  3. 4.670 km S of Atka, Alaska · 14122 days ago · 33 km deep · 30 km away
  4. 4.892 km S of Atka, Alaska · 14122 days ago · 33 km deep · 8 km away
  5. 4.6152 km SE of Adak, Alaska · 14087 days ago · 33 km deep · 69 km away
  6. 4.3141 km SSW of Atka, Alaska · 14063 days ago · 33 km deep · 50 km away

Before

  1. 5.085 km S of Atka, Alaska · 14122 days ago · 33 km deep · 14 km away
  2. 4.886 km S of Atka, Alaska · 14123 days ago · 33 km deep · 15 km away
  3. 4.781 km S of Atka, Alaska · 14123 days ago · 33 km deep · 19 km away
  4. 5.0108 km S of Atka, Alaska · 14124 days ago · 33 km deep · 9 km away
  5. 5.193 km SSW of Atka, Alaska · 14132 days ago · 33 km deep · 30 km away
  6. 5.383 km SSW of Atka, Alaska · 14132 days ago · 33 km deep · 37 km away
  7. 4.735 km WSW of Atka, Alaska · 14132 days ago · 33 km deep · 86 km away
  8. 5.1100 km SSW of Atka, Alaska · 14132 days ago · 33 km deep · 27 km away
  9. 5.2103 km SSW of Atka, Alaska · 14132 days ago · 33 km deep · 30 km away
  10. 5.5103 km SSW of Atka, Alaska · 14132 days ago · 33 km deep · 26 km away
  11. 5.595 km SSW of Atka, Alaska · 14132 days ago · 33 km deep · 27 km away
  12. 4.397 km SW of Atka, Alaska · 14151 days ago · 33 km deep · 65 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0003ca6. Read Tue, Sep 22, 2026, 7:34 AM UTC.