Alaska earthquakes

M2.9 earthquake 135 km ESE of Atka, Alaska

A magnitude 2.9 earthquake struck 135 km ESE of Atka, Alaska on Mon, Dec 7, 2020, 12:08 AM HAST (10:08 UTC), 103 km (64 mi) below the surface.

A larger quake followed: M3.6 213 km ESE of Atka, 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
2.9 (ml), micro
Local time
UTC
2020-12-07 10:08:57 UTC
Depth
103.0 km (64.0 mi), intermediate-depth
Epicenter
51.738° N, 172.377° 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.

Location uncertainty
About 12.8 km horizontally, 26.1 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
217°, poorly surrounded by stations
Stations used
16

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 14 in the 30 days before it.

After

  1. 2.7100 km SE of Atka, Alaska · 2122 days ago · 12 km deep · 61 km away
  2. 3.2142 km ESE of Atka, Alaska · 2122 days ago · 35 km deep · 23 km away
  3. 2.786 km E of Atka, Alaska · 2118 days ago · 112 km deep · 56 km away
  4. 3.137 km ESE of Atka, Alaska · 2111 days ago · 128 km deep · 98 km away
  5. 3.1Andreanof Islands, Aleutian Islands, Alaska · 2110 days ago · 128 km deep · 62 km away
  6. 3.6213 km ESE of Atka, Alaska · 2109 days ago · 25 km deep · 80 km away
  7. 3.666 km E of Atka, Alaska · 2107 days ago · 102 km deep · 76 km away
  8. 3.4120 km ESE of Atka, Alaska · 2093 days ago · 35 km deep · 15 km away
  9. 2.684 km SSE of Atka, Alaska · 2093 days ago · 147 km deep · 98 km away
  10. 1.974 km SE of Atka, Alaska · 2085 days ago · 12 km deep · 74 km away
  11. 2.165 km SE of Atka, Alaska · 2082 days ago · 28 km deep · 78 km away
  12. 1.972 km ESE of Atka, Alaska · 2077 days ago · 34 km deep · 63 km away
  13. 2.7178 km WSW of Nikolski, Alaska · 2066 days ago · 35 km deep · 95 km away

Before

  1. 3.0Andreanof Islands, Aleutian Islands, Alaska · 2123 days ago · 12 km deep · 74 km away
  2. 3.6138 km E of Atka, Alaska · 2127 days ago · 103 km deep · 74 km away
  3. 4.1147 km E of Atka, Alaska · 2127 days ago · 34 km deep · 40 km away
  4. 3.373 km SE of Atka, Alaska · 2129 days ago · 14 km deep · 81 km away
  5. 4.4177 km SW of Nikolski, Alaska · 2134 days ago · 35 km deep · 100 km away
  6. 2.8101 km SSE of Atka, Alaska · 2135 days ago · 35 km deep · 80 km away
  7. 3.293 km SSE of Atka, Alaska · 2135 days ago · 35 km deep · 95 km away
  8. 3.6103 km SE of Atka, Alaska · 2139 days ago · 35 km deep · 42 km away
  9. 2.9106 km ESE of Atka, Alaska · 2139 days ago · 19 km deep · 29 km away
  10. 3.2112 km ESE of Atka, Alaska · 2145 days ago · 35 km deep · 23 km away
  11. 3.3112 km SE of Atka, Alaska · 2146 days ago · 55 km deep · 46 km away
  12. 3.272 km ESE of Atka, Alaska · 2146 days ago · 100 km deep · 63 km away
  13. 3.090 km SSE of Atka, Alaska · 2146 days ago · 10 km deep · 83 km away
  14. 4.3130 km ENE of Atka, Alaska · 2149 days ago · 138 km deep · 99 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000crdh (also filed as ak020fprsv40). Read Tue, Sep 29, 2026, 10:21 PM UTC.