Alaska earthquakes

M3.6 earthquake 130 km E of Atka, Alaska

A magnitude 3.6 earthquake struck 130 km E of Atka, Alaska on Sat, Jan 18, 2020, 4:56 AM HAST (14:56 UTC), 30 km (19 mi) below the surface.

A larger quake followed: M4.1 217 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
3.6 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2020-01-18 14:56:14 UTC
Depth
30.4 km (18.9 mi), shallow
Epicenter
52.034° N, 172.314° 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)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.081 · 20 stations
3.2ML, 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 4.4 km horizontally, 5.3 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
151°
Stations used
34

Nearby

Within 100 km, magnitude 1.5 and up: 20 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 2.152 km E of Atka, Alaska · 2446 days ago · 15 km deep · 78 km away
  2. 2.9169 km SW of Nikolski, Alaska · 2445 days ago · 26 km deep · 93 km away
  3. 3.744 km ENE of Atka, Alaska · 2442 days ago · 179 km deep · 93 km away
  4. 3.5187 km ESE of Atka, Alaska · 2441 days ago · 36 km deep · 62 km away
  5. 2.284 km SE of Atka, AK · 2437 days ago · 12 km deep · 96 km away
  6. 2.389 km ESE of Atka, Alaska · 2431 days ago · 41 km deep · 52 km away
  7. 3.5195 km E of Atka, Alaska · 2430 days ago · 35 km deep · 64 km away
  8. 2.886 km SE of Atka, Alaska · 2428 days ago · 20 km deep · 86 km away
  9. 4.1217 km ESE of Atka, Alaska · 2428 days ago · 17 km deep · 91 km away
  10. 2.9171 km ESE of Atka, Alaska · 2426 days ago · 10 km deep · 56 km away
  11. 2.335 km ESE of Atka, Alaska · 2421 days ago · 6 km deep · 98 km away
  12. 2.338 km ESE of Atka, Alaska · 2421 days ago · 6 km deep · 94 km away
  13. 3.094 km E of Atka, Alaska · 2421 days ago · 112 km deep · 36 km away
  14. 2.7103 km ENE of Atka, Alaska · 2419 days ago · 117 km deep · 56 km away
  15. 2.369 km E of Atka, Alaska · 2414 days ago · 100 km deep · 66 km away
  16. 3.571 km E of Atka, Alaska · 2412 days ago · 10 km deep · 59 km away
  17. 3.5185 km ESE of Atka, Alaska · 2398 days ago · 35 km deep · 56 km away
  18. 3.4110 km ENE of Atka, Alaska · 2398 days ago · 223 km deep · 54 km away
  19. 2.8183 km E of Atka, Alaska · 2395 days ago · 26 km deep · 52 km away
  20. 3.367 km E of Atka, Alaska · 2393 days ago · 195 km deep · 63 km away

Before

  1. 2.234 km ESE of Atka, Alaska · 2458 days ago · 10 km deep · 98 km away
  2. 2.272 km SE of Atka, AK · 2459 days ago · 22 km deep · 97 km away
  3. 2.4105 km E of Atka, Alaska · 2460 days ago · 116 km deep · 45 km away
  4. 2.287 km SE of Atka, Alaska · 2462 days ago · 17 km deep · 89 km away
  5. 2.558 km SE of Atka, Alaska · 2468 days ago · 13 km deep · 98 km away
  6. 2.167 km E of Atka, Alaska · 2471 days ago · 91 km deep · 65 km away
  7. 4.481 km SE of Atka, Alaska · 2475 days ago · 35 km deep · 95 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us60007a8w (also filed as ak020u0cdpu). Read Thu, Oct 1, 2026, 12:54 PM UTC.