Alaska earthquakes

M2.5 earthquake 129 km ESE of Chignik, Alaska

A magnitude 2.5 earthquake struck 129 km ESE of Chignik, Alaska on Wed, Jan 3, 2018, 12:56 AM AKST (09:56 UTC), 66 km (41 mi) below the surface.

A larger quake followed: M4.4 132 km SSE of Chignik, Alaska. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
2.5 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2018-01-03 09:56:35 UTC
Depth
66.0 km (41.0 mi), shallow
Epicenter
55.916° N, 156.434° 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
2.5ML, local (Richter)Alaska Earthquake CenterPreferred · Preliminary
2.5ML, local (Richter)USGS National Earthquake Information CenterReviewed

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Stations used
31

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 19 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 2.361 km ESE of Chignik, Alaska · 3194 days ago · 25 km deep · 70 km away
  2. 2.287 km ENE of Chignik, Alaska · 3190 days ago · 95 km deep · 90 km away
  3. 2.1111 km SSE of Ugashik, Alaska · 3181 days ago · 20 km deep · 83 km away
  4. 2.3120 km ESE of Chignik, Alaska · 3179 days ago · 17 km deep · 9 km away
  5. 2.898 km ENE of Chignik, Alaska · 3175 days ago · 47 km deep · 86 km away · felt by 1
  6. 2.3120 km ENE of Chignik, Alaska · 3172 days ago · 74 km deep · 69 km away
  7. 2.188 km E of Chignik, Alaska · 3168 days ago · 27 km deep · 65 km away
  8. 2.689 km E of Chignik, Alaska · 3167 days ago · 43 km deep · 63 km away
  9. 3.0186 km ESE of Chignik, Alaska · 3160 days ago · 12 km deep · 61 km away
  10. 2.080 km E of Chignik, Alaska · 3158 days ago · 56 km deep · 67 km away
  11. 2.838 km SE of Chignik, Alaska · 3151 days ago · 39 km deep · 93 km away
  12. 1.9123 km SSE of Ugashik, Alaska · 3146 days ago · 46 km deep · 70 km away
  13. 4.4132 km SSE of Chignik, Alaska · 3144 days ago · 20 km deep · 90 km away
  14. 3.6134 km SSE of Chignik, Alaska · 3144 days ago · 20 km deep · 92 km away
  15. 3.3134 km SSE of Chignik, Alaska · 3143 days ago · 34 km deep · 88 km away
  16. 2.772 km E of Chignik, Alaska · 3139 days ago · 46 km deep · 70 km away
  17. 3.0119 km SE of Chignik, Alaska · 3139 days ago · 27 km deep · 75 km away
  18. 3.8130 km SSE of Chignik, Alaska · 3135 days ago · 26 km deep · 86 km away
  19. 3.4134 km SSE of Chignik, Alaska · 3135 days ago · 3 km deep · 85 km away

Before

  1. 2.6120 km SSE of Ugashik, Alaska · 3195 days ago · 64 km deep · 76 km away
  2. 2.5107 km E of Chignik, Alaska · 3198 days ago · 32 km deep · 59 km away
  3. 2.5114 km SSE of Ugashik, Alaska · 3207 days ago · 79 km deep · 79 km away
  4. 2.1120 km SE of Ugashik, Alaska · 3212 days ago · 69 km deep · 84 km away
  5. 3.6131 km SE of Chignik, Alaska · 3217 days ago · 39 km deep · 82 km away
  6. 2.134 km ESE of Chignik, Alaska · 3218 days ago · 47 km deep · 95 km away
  7. 2.1101 km SW of Akhiok, Alaska · 3218 days ago · 66 km deep · 80 km away
  8. 2.6113 km W of Akhiok, Alaska · 3219 days ago · 70 km deep · 99 km away
  9. 2.387 km SSE of Ugashik, Alaska · 3220 days ago · 75 km deep · 100 km away
  10. 2.396 km E of Chignik, Alaska · 3221 days ago · 42 km deep · 67 km away
  11. 4.4158 km ESE of Chignik, Alaska · 3224 days ago · 56 km deep · 29 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak01854b0sr (also filed as ak18024774, us1000c2bs). Read Fri, Oct 2, 2026, 11:26 AM UTC.