Alaska earthquakes

M2.9 earthquake 179 km WSW of Nikolski, Alaska

A magnitude 2.9 earthquake struck 179 km WSW of Nikolski, Alaska on Thu, Oct 29, 2020, 8:39 AM HADT (17:39 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M4.4 177 km SW of Nikolski, 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
2020-10-29 17:39:44 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
52.122° N, 171.146° 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 9.3 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.12
Depth from
Operator assigned
Station coverage gap
204°, poorly surrounded by stations
Stations used
20

Nearby

Within 100 km, magnitude 1.5 and up: 18 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 3.6126 km WSW of Nikolski, Alaska · 2148 days ago · 47 km deep · 53 km away
  2. 2.8120 km WSW of Nikolski, Alaska · 2142 days ago · 25 km deep · 61 km away
  3. 4.4177 km SW of Nikolski, Alaska · 2135 days ago · 35 km deep · 15 km away
  4. 3.2132 km WSW of Nikolski, Alaska · 2129 days ago · 28 km deep · 47 km away
  5. 4.1147 km E of Atka, Alaska · 2128 days ago · 34 km deep · 64 km away
  6. 3.6138 km E of Atka, Alaska · 2128 days ago · 103 km deep · 78 km away
  7. 3.1149 km WSW of Nikolski, Alaska · 2128 days ago · 35 km deep · 31 km away
  8. 4.2172 km SW of Nikolski, Alaska · 2124 days ago · 44 km deep · 17 km away
  9. 3.6169 km WSW of Nikolski, Alaska · 2124 days ago · 40 km deep · 12 km away
  10. 3.7178 km SW of Nikolski, Alaska · 2124 days ago · 40 km deep · 20 km away
  11. 2.9135 km ESE of Atka, Alaska · 2124 days ago · 103 km deep · 95 km away
  12. 3.2142 km ESE of Atka, Alaska · 2123 days ago · 35 km deep · 75 km away
  13. 3.4111 km SW of Nikolski, Alaska · 2122 days ago · 35 km deep · 73 km away
  14. 4.2127 km WSW of Nikolski, Alaska · 2111 days ago · 53 km deep · 52 km away
  15. 3.6213 km ESE of Atka, Alaska · 2111 days ago · 25 km deep · 51 km away
  16. 2.485 km SW of Nikolski, Alaska · 2110 days ago · 24 km deep · 100 km away
  17. 4.0158 km SW of Nikolski, Alaska · 2110 days ago · 41 km deep · 58 km away
  18. 2.993 km WSW of Nikolski, Alaska · 2104 days ago · 35 km deep · 86 km away

Before

  1. 2.5192 km ESE of Atka, Alaska · 2166 days ago · 37 km deep · 37 km away
  2. 3.7128 km SW of Nikolski, Alaska · 2173 days ago · 21 km deep · 54 km away
  3. 3.4183 km WSW of Nikolski, Alaska · 2175 days ago · 35 km deep · 8 km away
  4. 3.0191 km E of Atka, Alaska · 2178 days ago · 37 km deep · 31 km away
  5. 2.7186 km E of Atka, Alaska · 2180 days ago · 35 km deep · 28 km away
  6. 3.0193 km WSW of Nikolski, Alaska · 2189 days ago · 35 km deep · 14 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000cdli (also filed as ak020dxe6zoh). Read Thu, Oct 1, 2026, 1:24 AM UTC.