Alaska earthquakes

M2.8 earthquake 48 km S of Atka, Alaska

A magnitude 2.8 earthquake struck 48 km S of Atka, Alaska on Sat, Jul 4, 2020, 11:44 AM HADT (20:44 UTC), 29 km (18 mi) below the surface.

A larger quake followed: M3.9 30 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
2.8 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2020-07-04 20:44:23 UTC
Depth
29.0 km (18.0 mi), shallow
Epicenter
51.767° N, 174.324° 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 · ±0.128 · 8 stations
2.2ML, 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 3.4 km horizontally, 10.8 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
258°, poorly surrounded by stations
Stations used
17

Nearby

Within 100 km, magnitude 1.5 and up: 125 in the 60 days after this one and 49 in the 30 days before it.

After

  1. 1.5Andreanof Islands, Aleutian Islands, Alaska · 2283 days ago · 24 km deep · 8 km away
  2. 2.110 km NNW of Atka, Alaska · 2282 days ago · 156 km deep · 57 km away
  3. 2.099 km SSE of Atka, Alaska · 2282 days ago · 13 km deep · 59 km away
  4. 2.221 km NE of Atka, Alaska · 2281 days ago · 179 km deep · 68 km away
  5. 1.687 km SE of Atka, Alaska · 2281 days ago · 14 km deep · 82 km away
  6. 2.590 km SW of Atka, Alaska · 2281 days ago · 35 km deep · 54 km away
  7. 2.132 km WNW of Atka, Alaska · 2280 days ago · 204 km deep · 63 km away
  8. 2.681 km SSW of Atka, Alaska · 2279 days ago · 28 km deep · 34 km away
  9. 1.59 km E of Atka, Alaska · 2279 days ago · 7 km deep · 50 km away
  10. 2.223 km N of Atka, Alaska · 2278 days ago · 197 km deep · 71 km away
  11. 1.822 km SSE of Atka, Alaska · 2278 days ago · 91 km deep · 31 km away
  12. 1.636 km SW of Atka, Alaska · 2278 days ago · 96 km deep · 30 km away
  13. 1.987 km WSW of Atka, Alaska · 2278 days ago · 58 km deep · 65 km away
  14. 1.857 km WSW of Atka, Alaska · 2278 days ago · 113 km deep · 54 km away
  15. 1.767 km ESE of Adak, Alaska · 2277 days ago · 48 km deep · 93 km away
  16. 2.627 km S of Atka, Alaska · 2277 days ago · 76 km deep · 21 km away
  17. 2.325 km WNW of Atka, Alaska · 2276 days ago · 170 km deep · 60 km away
  18. 1.689 km SSW of Atka, Alaska · 2275 days ago · 38 km deep · 45 km away
  19. 1.784 km SSW of Atka, Alaska · 2275 days ago · 25 km deep · 41 km away
  20. 2.885 km SSW of Atka, Alaska · 2275 days ago · 35 km deep · 40 km away
  21. 2.886 km SSW of Atka, Alaska · 2275 days ago · 23 km deep · 40 km away
  22. 1.679 km SSW of Atka, Alaska · 2275 days ago · 26 km deep · 37 km away
  23. 1.795 km SE of Atka, Alaska · 2275 days ago · 45 km deep · 86 km away
  24. 1.771 km SE of Atka, Alaska · 2275 days ago · 27 km deep · 62 km away
  25. 2.536 km NNE of Atka, Alaska · 2275 days ago · 10 km deep · 85 km away
  26. 2.696 km SE of Adak, Alaska · 2275 days ago · 23 km deep · 97 km away
  27. 1.873 km ESE of Atka, Alaska · 2273 days ago · 96 km deep · 76 km away
  28. 2.0100 km S of Atka, Alaska · 2273 days ago · 15 km deep · 54 km away
  29. 2.622 km SE of Atka, Alaska · 2273 days ago · 216 km deep · 36 km away
  30. 1.874 km E of Atka, Alaska · 2272 days ago · 9 km deep · 96 km away
  31. 2.5108 km S of Atka, Alaska · 2272 days ago · 7 km deep · 61 km away
  32. 1.662 km WSW of Atka, Alaska · 2271 days ago · 70 km deep · 51 km away
  33. 1.671 km S of Atka, Alaska · 2271 days ago · 18 km deep · 24 km away
  34. 1.630 km ESE of Atka, Alaska · 2270 days ago · 16 km deep · 46 km away
  35. 1.644 km S of Atka, Alaska · 2270 days ago · 25 km deep · 5 km away
  36. 2.7107 km SSE of Atka, Alaska · 2269 days ago · 35 km deep · 67 km away
  37. 1.69 km N of Atka, Alaska · 2269 days ago · 126 km deep · 58 km away
  38. 1.534 km SE of Atka, Alaska · 2268 days ago · 10 km deep · 44 km away
  39. 1.871 km E of Atka, Alaska · 2268 days ago · 200 km deep · 100 km away
  40. 1.665 km SSW of Atka, Alaska · 2266 days ago · 22 km deep · 18 km away
  41. 2.150 km NW of Atka, Alaska · 2266 days ago · 187 km deep · 89 km away
  42. 2.291 km SW of Atka, Alaska · 2266 days ago · 25 km deep · 60 km away
  43. 2.263 km SSE of Atka, Alaska · 2264 days ago · 46 km deep · 30 km away
  44. 1.619 km W of Atka, Alaska · 2264 days ago · 19 km deep · 51 km away
  45. 1.776 km SE of Atka, Alaska · 2262 days ago · 40 km deep · 69 km away
  46. 1.521 km SSE of Atka, Alaska · 2262 days ago · 59 km deep · 30 km away
  47. 1.734 km S of Atka, Alaska · 2262 days ago · 56 km deep · 14 km away
  48. 2.185 km ESE of Adak, Alaska · 2262 days ago · 26 km deep · 94 km away
  49. 1.617 km WSW of Atka, Alaska · 2262 days ago · 10 km deep · 40 km away
  50. 2.234 km W of Atka, Alaska · 2261 days ago · 204 km deep · 57 km away
  51. 1.646 km SSE of Atka, Alaska · 2260 days ago · 42 km deep · 32 km away
  52. 1.864 km E of Atka, Alaska · 2260 days ago · 6 km deep · 91 km away
  53. 3.387 km SE of Atka, Alaska · 2260 days ago · 22 km deep · 70 km away
  54. 1.662 km E of Atka, Alaska · 2260 days ago · 5 km deep · 86 km away
  55. 2.779 km SW of Atka, Alaska · 2260 days ago · 23 km deep · 41 km away
  56. 2.667 km WSW of Atka, Alaska · 2259 days ago · 10 km deep · 49 km away
  57. 1.958 km NW of Atka, Alaska · 2259 days ago · 176 km deep · 95 km away
  58. 1.944 km SE of Atka, Alaska · 2258 days ago · 10 km deep · 42 km away
  59. 3.648 km S of Atka, Alaska · 2257 days ago · 30 km deep · 3 km away
  60. 1.797 km ESE of Adak, Alaska · 2257 days ago · 27 km deep · 71 km away

The first 60 of 125.

Before

  1. 3.187 km ESE of Atka, Alaska · 2284 days ago · 170 km deep · 99 km away
  2. 1.634 km W of Atka, Alaska · 2284 days ago · 26 km deep · 50 km away
  3. 1.987 km ESE of Atka, Alaska · 2285 days ago · 37 km deep · 86 km away
  4. 2.228 km WNW of Atka, Alaska · 2285 days ago · 169 km deep · 62 km away
  5. 1.845 km ENE of Atka, Alaska · 2286 days ago · 4 km deep · 83 km away
  6. 3.836 km NE of Atka, Alaska · 2289 days ago · 131 km deep · 83 km away
  7. 2.080 km WSW of Atka, Alaska · 2290 days ago · 71 km deep · 66 km away
  8. 3.479 km WSW of Atka, Alaska · 2290 days ago · 76 km deep · 64 km away
  9. 2.0138 km S of Atka, Alaska · 2291 days ago · 7 km deep · 95 km away
  10. 3.364 km SSW of Atka, Alaska · 2291 days ago · 35 km deep · 19 km away
  11. 2.685 km E of Adak, Alaska · 2292 days ago · 65 km deep · 76 km away
  12. 2.973 km E of Atka, Alaska · 2293 days ago · 61 km deep · 91 km away
  13. 1.675 km WSW of Atka, Alaska · 2293 days ago · 74 km deep · 62 km away
  14. 1.535 km S of Atka, Alaska · 2293 days ago · 24 km deep · 16 km away
  15. 4.119 km SSE of Atka, Alaska · 2294 days ago · 59 km deep · 35 km away
  16. 1.574 km E of Adak, Alaska · 2294 days ago · 19 km deep · 86 km away
  17. 1.686 km S of Atka, Alaska · 2294 days ago · 41 km deep · 38 km away
  18. 1.839 km ESE of Atka, Alaska · 2294 days ago · 71 km deep · 57 km away
  19. 1.87 km WSW of Atka, Alaska · 2294 days ago · 7 km deep · 44 km away
  20. 1.566 km SSE of Atka, Alaska · 2294 days ago · 9 km deep · 31 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000arzg (also filed as ak0208jy4pbg). Read Sun, Oct 4, 2026, 9:38 PM UTC.