Alaska earthquakes

M3.0 earthquake 153 km ESE of Chignik, Alaska

A magnitude 3.0 earthquake struck 153 km ESE of Chignik, Alaska on Mon, Dec 7, 2020, 3:21 AM AKST (12:21 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M3.5 117 km SSE of Ugashik, 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
3.0 (ML, local (Richter)), minor
Magnitude from
Alaska Earthquake Center
Local time
UTC
2020-12-07 12:21:54 UTC
Depth
14.8 km (9.2 mi), shallow
Epicenter
55.970° N, 156.006° 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
3.2ML, local (Richter)USGS National Earthquake Information CenterReviewed · ±0.069 · 28 stations

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
55

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 25 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 2.374 km E of Chignik, Alaska · 2118 days ago · 48 km deep · 86 km away
  2. 3.3119 km E of Chignik, Alaska · 2118 days ago · 46 km deep · 52 km away
  3. 2.5103 km ESE of Chignik, Alaska · 2112 days ago · 44 km deep · 51 km away
  4. 3.4119 km ESE of Chignik, Alaska · 2108 days ago · 51 km deep · 34 km away
  5. 2.5130 km SW of Akhiok, Alaska · 2102 days ago · 66 km deep · 33 km away
  6. 3.4113 km SE of Ugashik, Alaska · 2098 days ago · 75 km deep · 89 km away
  7. 1.9120 km SSE of Ugashik, Alaska · 2098 days ago · 59 km deep · 71 km away
  8. 2.4127 km SSE of Ugashik, Alaska · 2095 days ago · 70 km deep · 65 km away
  9. 2.6101 km ESE of Chignik, Alaska · 2093 days ago · 23 km deep · 52 km away
  10. 1.9110 km SE of Ugashik, Alaska · 2088 days ago · 68 km deep · 92 km away
  11. 2.595 km SSE of Ugashik, Alaska · 2088 days ago · 84 km deep · 96 km away
  12. 3.5117 km SSE of Ugashik, Alaska · 2087 days ago · 57 km deep · 74 km away
  13. 2.1south of Alaska · 2086 days ago · 30 km deep · 47 km away
  14. 3.277 km SE of Chignik, Alaska · 2085 days ago · 14 km deep · 97 km away
  15. 2.7132 km SW of Akhiok, Alaska · 2084 days ago · 41 km deep · 27 km away
  16. 3.1138 km WSW of Akhiok, Alaska · 2082 days ago · 53 km deep · 41 km away
  17. 2.499 km ESE of Chignik, Alaska · 2077 days ago · 46 km deep · 53 km away
  18. 2.5126 km SSE of Ugashik, Alaska · 2076 days ago · 73 km deep · 68 km away
  19. 2.8Alaska Peninsula · 2075 days ago · 45 km deep · 44 km away
  20. 2.877 km SE of Chignik, Alaska · 2074 days ago · 9 km deep · 85 km away
  21. 2.0134 km E of Chignik, Alaska · 2070 days ago · 20 km deep · 48 km away
  22. 2.579 km WSW of Akhiok, Alaska · 2067 days ago · 57 km deep · 85 km away
  23. 2.781 km E of Chignik, Alaska · 2067 days ago · 31 km deep · 81 km away
  24. 2.4117 km SW of Akhiok, Alaska · 2067 days ago · 55 km deep · 44 km away
  25. 2.1113 km SW of Akhiok, Alaska · 2067 days ago · 43 km deep · 47 km away

Before

  1. 2.4113 km SE of Ugashik, Alaska · 2131 days ago · 11 km deep · 85 km away
  2. 2.999 km ENE of Chignik, Alaska · 2133 days ago · 56 km deep · 94 km away
  3. 2.389 km E of Chignik, Alaska · 2134 days ago · 71 km deep · 71 km away
  4. 3.176 km SSW of Akhiok, Alaska · 2135 days ago · 37 km deep · 93 km away
  5. 2.6109 km E of Chignik, Alaska · 2142 days ago · 36 km deep · 61 km away
  6. 2.3107 km ESE of Chignik, Alaska · 2144 days ago · 45 km deep · 46 km away
  7. 1.7110 km SE of Ugashik, Alaska · 2145 days ago · 2 km deep · 87 km away
  8. 1.798 km W of Akhiok, Alaska · 2146 days ago · 8 km deep · 93 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak020fpt2hzk (also filed as us7000crd2). Read Fri, Oct 2, 2026, 10:20 PM UTC.