Alaska earthquakes

M2.8 earthquake 107 km ESE of Atka, Alaska

A magnitude 2.8 earthquake struck 107 km ESE of Atka, Alaska on Fri, Oct 4, 2019, 12:47 PM HADT (21:47 UTC), 19 km (12 mi) below the surface.

A larger quake followed: M4.8 93 km ENE 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
2.8 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2019-10-04 21:47:17 UTC
Depth
18.8 km (11.7 mi), shallow
Epicenter
51.799° N, 172.771° 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
2.8ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed
2.8ML, 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 7.4 km horizontally, 8.6 km in depth
Depth from
From location
Station coverage gap
210°, poorly surrounded by stations
Stations used
23

Nearby

Within 100 km, magnitude 1.5 and up: 33 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 2.8171 km E of Atka, Alaska · 2554 days ago · 26 km deep · 84 km away
  2. 2.2117 km ESE of Atka, Alaska · 2552 days ago · 8 km deep · 13 km away
  3. 2.547 km SSE of Atka, Alaska · 2549 days ago · 35 km deep · 85 km away
  4. 1.974 km SSE of Atka, Alaska · 2546 days ago · 18 km deep · 79 km away
  5. 3.5182 km E of Atka, Alaska · 2546 days ago · 35 km deep · 88 km away
  6. 2.373 km ENE of Atka, Alaska · 2540 days ago · 26 km deep · 75 km away
  7. 3.375 km E of Atka, Alaska · 2539 days ago · 10 km deep · 46 km away
  8. 2.270 km SE of Atka, Alaska · 2539 days ago · 46 km deep · 43 km away
  9. 2.260 km ESE of Atka, Alaska · 2537 days ago · 74 km deep · 48 km away
  10. 3.466 km SE of Atka, Alaska · 2533 days ago · 47 km deep · 62 km away
  11. 3.959 km E of Atka, Alaska · 2532 days ago · 83 km deep · 64 km away
  12. 2.069 km S of Atka, Alaska · 2530 days ago · 27 km deep · 92 km away
  13. 3.929 km E of Atka, Alaska · 2524 days ago · 9 km deep · 82 km away
  14. 2.3110 km SE of Atka, Alaska · 2523 days ago · 23 km deep · 59 km away
  15. 4.893 km ENE of Atka, Alaska · 2523 days ago · 128 km deep · 81 km away · tsunami flag
  16. 1.628 km NE of Atka, Alaska · 2522 days ago · 12 km deep · 98 km away
  17. 2.172 km ESE of Atka, Alaska · 2522 days ago · 63 km deep · 35 km away
  18. 1.617 km ESE of Atka, Alaska · 2520 days ago · 3 km deep · 90 km away
  19. 3.7176 km ESE of Atka, Alaska · 2518 days ago · 35 km deep · 75 km away
  20. 2.170 km SSE of Atka, Alaska · 2517 days ago · 28 km deep · 74 km away
  21. 1.864 km SSE of Atka, Alaska · 2517 days ago · 19 km deep · 63 km away
  22. 2.3103 km ESE of Atka, Alaska · 2514 days ago · 14 km deep · 7 km away
  23. 2.8158 km E of Atka, Alaska · 2513 days ago · 33 km deep · 80 km away
  24. 1.833 km ENE of Atka, Alaska · 2513 days ago · 20 km deep · 91 km away
  25. 4.081 km S of Atka, Alaska · 2512 days ago · 35 km deep · 95 km away
  26. 2.067 km SE of Atka, Alaska · 2512 days ago · 32 km deep · 54 km away
  27. 2.372 km ESE of Atka, Alaska · 2509 days ago · 61 km deep · 38 km away
  28. 4.381 km SSE of Atka, Alaska · 2508 days ago · 39 km deep · 59 km away
  29. 2.889 km ENE of Atka, Alaska · 2506 days ago · 136 km deep · 63 km away
  30. 2.969 km SSE of Atka, Alaska · 2505 days ago · 29 km deep · 80 km away
  31. 2.5Andreanof Islands, Aleutian Islands, Alaska · 2505 days ago · 10 km deep · 85 km away
  32. 2.226 km SE of Atka, Alaska · 2500 days ago · 81 km deep · 82 km away
  33. 2.431 km ESE of Atka, Alaska · 2498 days ago · 9 km deep · 76 km away

Before

  1. 2.2172 km SE of Atka, Alaska · 2557 days ago · 9 km deep · 97 km away
  2. 1.951 km SE of Atka, Alaska · 2557 days ago · 44 km deep · 67 km away
  3. 1.972 km SSE of Atka, Alaska · 2558 days ago · 5 km deep · 74 km away
  4. 1.874 km S of Atka, Alaska · 2559 days ago · 6 km deep · 98 km away
  5. 1.868 km SSE of Atka, Alaska · 2564 days ago · 46 km deep · 68 km away
  6. 2.1134 km E of Atka, Alaska · 2565 days ago · 52 km deep · 60 km away
  7. 1.825 km ESE of Atka, Alaska · 2566 days ago · 31 km deep · 82 km away
  8. 3.0174 km ESE of Atka, Alaska · 2568 days ago · 35 km deep · 68 km away
  9. 2.296 km SSE of Atka, Alaska · 2571 days ago · 48 km deep · 76 km away
  10. 2.475 km E of Atka, Alaska · 2573 days ago · 7 km deep · 49 km away
  11. 4.124 km E of Atka, Alaska · 2579 days ago · 171 km deep · 85 km away
  12. 2.269 km SSE of Atka, Alaska · 2584 days ago · 51 km deep · 80 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70005tr0 (also filed as ak019cqgndba). Read Fri, Oct 2, 2026, 6:02 AM UTC.