Alaska earthquakes

M3.6 earthquake 131 km SE of Chignik, Alaska

A magnitude 3.6 earthquake struck 131 km SE of Chignik, Alaska on Mon, Dec 11, 2017, 12:09 AM AKST (09:09 UTC), 39 km (24 mi) below the surface.

A larger quake followed: M4.6 206 km SE of Perryville, 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
3.6 (ML, local (Richter)), minor
Magnitude from
Alaska Earthquake Center
Local time
UTC
2017-12-11 09:09:49 UTC
Depth
38.7 km (24.0 mi), shallow
Epicenter
55.324° N, 157.208° 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
3.6ML, local (Richter)Alaska Earthquake CenterPreferred · Preliminary
3.6ML, 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
68

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 13 in the 30 days before it.

After

  1. 2.2114 km SE of Perryville, Alaska · 3217 days ago · 65 km deep · 53 km away
  2. 2.7203 km SE of Perryville, Alaska · 3214 days ago · 33 km deep · 78 km away
  3. 3.3199 km SE of Perryville, Alaska · 3213 days ago · 25 km deep · 72 km away
  4. 4.6206 km SE of Perryville, Alaska · 3213 days ago · 26 km deep · 79 km away · felt by 1
  5. 2.676 km SSE of Perryville, Alaska · 3203 days ago · 28 km deep · 82 km away
  6. 2.5129 km ESE of Chignik, Alaska · 3194 days ago · 66 km deep · 82 km away
  7. 2.361 km ESE of Chignik, Alaska · 3194 days ago · 25 km deep · 80 km away
  8. 2.3120 km ESE of Chignik, Alaska · 3179 days ago · 17 km deep · 81 km away
  9. 3.1132 km SSE of Perryville, Alaska · 3173 days ago · 29 km deep · 91 km away
  10. 3.0186 km ESE of Chignik, Alaska · 3160 days ago · 12 km deep · 94 km away

Before

  1. 2.768 km SSE of Perryville, Alaska · 3220 days ago · 12 km deep · 86 km away
  2. 2.267 km SE of Perryville, Alaska · 3222 days ago · 31 km deep · 82 km away
  3. 3.3134 km SE of Perryville, Alaska · 3223 days ago · 26 km deep · 32 km away
  4. 3.194 km SSE of Perryville, Alaska · 3224 days ago · 41 km deep · 86 km away
  5. 4.4158 km ESE of Chignik, Alaska · 3224 days ago · 56 km deep · 95 km away
  6. 2.1132 km ESE of Chignik, Alaska · 3226 days ago · 53 km deep · 89 km away
  7. 2.250 km S of Chignik, Alaska · 3226 days ago · 49 km deep · 91 km away
  8. 3.087 km SE of Chignik, Alaska · 3234 days ago · 10 km deep · 51 km away
  9. 2.6123 km SE of Perryville, Alaska · 3237 days ago · 10 km deep · 47 km away
  10. 3.4122 km SE of Perryville, Alaska · 3237 days ago · 20 km deep · 40 km away
  11. 4.8122 km SE of Perryville, Alaska · 3237 days ago · 39 km deep · 47 km away
  12. 2.753 km S of Chignik, Alaska · 3237 days ago · 49 km deep · 87 km away
  13. 2.5130 km SSE of Perryville, Alaska · 3243 days ago · 19 km deep · 83 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak017fupto2x (also filed as ak17582327, us2000c2t0). Read Fri, Oct 2, 2026, 12:13 PM UTC.