Alaska earthquakes

M3.0 earthquake 186 km ESE of Chignik, Alaska

A magnitude 3.0 earthquake struck 186 km ESE of Chignik, Alaska on Tue, Feb 6, 2018, 11:56 AM AKST (20:56 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M3.8 130 km SSE of Chignik, 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
3.0 (ML, local (Richter)), minor
Magnitude from
Alaska Earthquake Center
Local time
UTC
2018-02-06 20:56:41 UTC
Depth
11.7 km (7.3 mi), shallow
Epicenter
55.515° N, 155.762° 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
3.0ML, local (Richter)Alaska Earthquake CenterPreferred · Preliminary
3.0ML, 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
37

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 14 in the 60 days after this one and 1 in the 30 days before it.

After

  1. 3.090 km SSW of Akhiok, Alaska · 3148 days ago · 42 km deep · 97 km away
  2. 3.3134 km SSE of Chignik, Alaska · 3143 days ago · 34 km deep · 98 km away
  3. 3.0119 km SE of Chignik, Alaska · 3139 days ago · 27 km deep · 95 km away
  4. 3.8130 km SSE of Chignik, Alaska · 3135 days ago · 26 km deep · 99 km away
  5. 3.4134 km SSE of Chignik, Alaska · 3135 days ago · 3 km deep · 95 km away
  6. 3.6136 km SE of Chignik, Alaska · 3134 days ago · 37 km deep · 86 km away
  7. 3.8113 km SE of Chignik, Alaska · 3133 days ago · 24 km deep · 89 km away
  8. 3.4103 km ESE of Chignik, Alaska · 3126 days ago · 11 km deep · 84 km away
  9. 2.787 km ESE of Chignik, Alaska · 3126 days ago · 7 km deep · 99 km away
  10. 2.5112 km SE of Chignik, Alaska · 3124 days ago · 7 km deep · 90 km away
  11. 2.1116 km E of Chignik, Alaska · 3123 days ago · 51 km deep · 85 km away
  12. 2.4130 km SE of Chignik, Alaska · 3122 days ago · 14 km deep · 83 km away
  13. 2.3112 km SW of Akhiok, Alaska · 3110 days ago · 14 km deep · 93 km away
  14. 2.3140 km ESE of Chignik, Alaska · 3103 days ago · 59 km deep · 47 km away

Before

  1. 2.3120 km ESE of Chignik, Alaska · 3180 days ago · 17 km deep · 70 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0181pj4loo (also filed as ak18436890, us2000d2ha). Read Fri, Oct 2, 2026, 11:41 PM UTC.