Alaska earthquakes

M5.1 earthquake 100 km SSW of Atka, Alaska

A magnitude 5.1 earthquake struck 100 km SSW of Atka, Alaska on Tue, Jan 12, 1988, 3:09 PM HAST (01:09 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.3 83 km SSW of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude
5.1 (mb), moderate
Local time
UTC
1988-01-13 01:09:35 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.339° N, 174.671° 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 2.1 and up: 13 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 4.735 km WSW of Atka, Alaska · 14132 days ago · 33 km deep · 78 km away
  2. 5.383 km SSW of Atka, Alaska · 14132 days ago · 33 km deep · 19 km away
  3. 5.193 km SSW of Atka, Alaska · 14132 days ago · 33 km deep · 8 km away
  4. 5.0108 km S of Atka, Alaska · 14124 days ago · 33 km deep · 31 km away
  5. 4.781 km S of Atka, Alaska · 14123 days ago · 33 km deep · 35 km away
  6. 4.886 km S of Atka, Alaska · 14123 days ago · 33 km deep · 36 km away
  7. 5.085 km S of Atka, Alaska · 14123 days ago · 33 km deep · 31 km away
  8. 4.699 km S of Atka, Alaska · 14122 days ago · 33 km deep · 27 km away
  9. 5.085 km S of Atka, Alaska · 14122 days ago · 33 km deep · 28 km away
  10. 5.088 km S of Atka, Alaska · 14122 days ago · 48 km deep · 29 km away
  11. 4.670 km S of Atka, Alaska · 14122 days ago · 33 km deep · 40 km away
  12. 4.892 km S of Atka, Alaska · 14122 days ago · 33 km deep · 29 km away
  13. 4.6152 km SE of Adak, Alaska · 14087 days ago · 33 km deep · 54 km away

Before

  1. 5.2103 km SSW of Atka, Alaska · 14132 days ago · 33 km deep · 3 km away
  2. 5.5103 km SSW of Atka, Alaska · 14132 days ago · 33 km deep · 4 km away
  3. 5.595 km SSW of Atka, Alaska · 14132 days ago · 33 km deep · 5 km away
  4. 4.397 km SW of Atka, Alaska · 14151 days ago · 33 km deep · 39 km away
  5. 4.979 km SE of Adak, Alaska · 14161 days ago · 33 km deep · 85 km away
  6. 5.0135 km SSW of Atka, Alaska · 14162 days ago · 33 km deep · 38 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0003c0f. Read Tue, Sep 22, 2026, 8:52 AM UTC.