Alaska earthquakes

M4.1 earthquake 180 km WSW of Nikolski, Alaska

A magnitude 4.1 earthquake struck 180 km WSW of Nikolski, Alaska on Wed, Apr 8, 2020, 10:43 PM HADT (07:43 UTC), 46 km (28 mi) below the surface.

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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
4.1 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2020-04-09 07:43:24 UTC
Depth
45.6 km (28.3 mi), shallow
Epicenter
52.174° N, 171.201° 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
4.1mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · ±0.041 · 164 stations
3.8ML, local (Richter)Alaska Earthquake CenterPreliminary

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 8.4 km horizontally, 6.8 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
138°
Stations used
229

Nearby

Within 100 km, magnitude 1.5 and up: 24 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 3.9121 km WSW of Nikolski, Alaska · 2367 days ago · 108 km deep · 72 km away
  2. 3.1197 km SW of Nikolski, Alaska · 2364 days ago · 35 km deep · 45 km away
  3. 3.6195 km E of Atka, Alaska · 2363 days ago · 35 km deep · 22 km away
  4. 4.190 km SW of Nikolski, Alaska · 2362 days ago · 35 km deep · 98 km away
  5. 3.6154 km SSW of Nikolski, Alaska · 2360 days ago · 57 km deep · 87 km away
  6. 3.1174 km E of Atka, Alaska · 2357 days ago · 35 km deep · 31 km away
  7. 3.7116 km SW of Nikolski, Alaska · 2356 days ago · 35 km deep · 82 km away
  8. 3.9195 km SW of Nikolski, Alaska · 2354 days ago · 19 km deep · 67 km away
  9. 3.6175 km SW of Nikolski, Alaska · 2352 days ago · 27 km deep · 48 km away
  10. 3.6185 km SW of Nikolski, Alaska · 2352 days ago · 26 km deep · 55 km away
  11. 4.1208 km SW of Nikolski, Alaska · 2352 days ago · 10 km deep · 91 km away
  12. 3.0186 km SW of Nikolski, Alaska · 2344 days ago · 37 km deep · 25 km away
  13. 3.7173 km WSW of Nikolski, Alaska · 2339 days ago · 57 km deep · 35 km away
  14. 3.4179 km ESE of Atka, Alaska · 2339 days ago · 39 km deep · 54 km away
  15. 3.4159 km WSW of Nikolski, Alaska · 2336 days ago · 35 km deep · 23 km away
  16. 3.282 km WSW of Nikolski, Alaska · 2329 days ago · 10 km deep · 98 km away
  17. 3.8136 km WSW of Nikolski, Alaska · 2322 days ago · 54 km deep · 45 km away
  18. 3.3171 km E of Atka, Alaska · 2321 days ago · 16 km deep · 38 km away
  19. 3.5156 km ESE of Atka, Alaska · 2320 days ago · 35 km deep · 63 km away
  20. 3.8149 km SW of Nikolski, Alaska · 2318 days ago · 35 km deep · 62 km away
  21. 3.7198 km SW of Nikolski, Alaska · 2314 days ago · 35 km deep · 34 km away
  22. 3.2218 km SW of Nikolski, Alaska · 2311 days ago · 10 km deep · 67 km away
  23. 2.2170 km WSW of Nikolski, Alaska · 2310 days ago · 24 km deep · 14 km away
  24. 1.9135 km ESE of Atka, Alaska · 2310 days ago · 36 km deep · 96 km away

Before

  1. 3.6134 km SW of Nikolski, Alaska · 2373 days ago · 35 km deep · 50 km away
  2. 3.4129 km WSW of Nikolski, Alaska · 2373 days ago · 10 km deep · 51 km away
  3. 3.6176 km WSW of Nikolski, Alaska · 2374 days ago · 22 km deep · 15 km away
  4. 2.8130 km ESE of Atka, Alaska · 2376 days ago · 35 km deep · 89 km away
  5. 3.1192 km SW of Nikolski, Alaska · 2379 days ago · 22 km deep · 68 km away
  6. 3.2142 km W of Nikolski, Alaska · 2386 days ago · 190 km deep · 84 km away
  7. 2.8183 km E of Atka, Alaska · 2396 days ago · 26 km deep · 36 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70008s8x (also filed as ak0204li60es). Read Fri, Oct 2, 2026, 3:59 AM UTC.