Alaska earthquakes

M3.6 earthquake 48 km S of Atka, Alaska

A magnitude 3.6 earthquake struck 48 km S of Atka, Alaska on Thu, Jul 30, 2020, 11:50 AM HADT (20:50 UTC), 30 km (19 mi) below the surface.

A larger quake followed: M4.0 26 km NNW 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), minor
Local time
UTC
2020-07-30 20:50:42 UTC
Depth
29.9 km (18.6 mi), shallow
Epicenter
51.759° N, 174.288° 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 5.7 km horizontally, 13.2 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
206°, poorly surrounded by stations
Stations used
28

Nearby

Within 100 km, magnitude 1.5 and up: 111 in the 60 days after this one and 64 in the 30 days before it.

After

  1. 1.797 km ESE of Adak, Alaska · 2253 days ago · 27 km deep · 73 km away
  2. 2.067 km SSW of Atka, Alaska · 2252 days ago · 41 km deep · 31 km away
  3. 3.564 km ESE of Atka, Alaska · 2251 days ago · 51 km deep · 77 km away
  4. 1.757 km ESE of Atka, Alaska · 2250 days ago · 69 km deep · 61 km away
  5. 3.365 km E of Atka, Alaska · 2250 days ago · 156 km deep · 88 km away
  6. 3.5101 km SW of Atka, Alaska · 2249 days ago · 20 km deep · 67 km away
  7. 1.689 km SW of Atka, Alaska · 2249 days ago · 26 km deep · 63 km away
  8. 1.983 km SSE of Atka, Alaska · 2249 days ago · 19 km deep · 55 km away
  9. 3.4120 km SSW of Atka, Alaska · 2247 days ago · 10 km deep · 74 km away
  10. 3.930 km ESE of Atka, Alaska · 2246 days ago · 83 km deep · 50 km away
  11. 1.983 km ESE of Adak, Alaska · 2246 days ago · 23 km deep · 98 km away
  12. 2.817 km NE of Atka, Alaska · 2246 days ago · 206 km deep · 64 km away
  13. 2.914 km W of Atka, Alaska · 2246 days ago · 188 km deep · 50 km away
  14. 3.081 km E of Adak, Alaska · 2246 days ago · 63 km deep · 81 km away
  15. 1.660 km SSE of Atka, Alaska · 2245 days ago · 41 km deep · 39 km away
  16. 1.776 km ESE of Atka, Alaska · 2245 days ago · 35 km deep · 76 km away
  17. 2.120 km WNW of Atka, Alaska · 2245 days ago · 177 km deep · 56 km away
  18. 2.013 km E of Atka, Alaska · 2245 days ago · 181 km deep · 53 km away
  19. 1.975 km S of Atka, Alaska · 2244 days ago · 5 km deep · 27 km away
  20. 1.687 km SW of Atka, Alaska · 2244 days ago · 23 km deep · 59 km away
  21. 2.95 km NNE of Atka, Alaska · 2243 days ago · 171 km deep · 54 km away
  22. 1.926 km SW of Atka, Alaska · 2243 days ago · 74 km deep · 29 km away
  23. 2.631 km W of Atka, Alaska · 2242 days ago · 35 km deep · 55 km away
  24. 1.993 km SW of Atka, Alaska · 2242 days ago · 25 km deep · 57 km away
  25. 2.352 km NE of Atka, Alaska · 2242 days ago · 157 km deep · 94 km away
  26. 2.6105 km S of Atka, Alaska · 2242 days ago · 35 km deep · 56 km away
  27. 2.452 km WNW of Atka, Alaska · 2242 days ago · 220 km deep · 84 km away
  28. 2.0134 km S of Atka, Alaska · 2241 days ago · 7 km deep · 87 km away
  29. 1.965 km SE of Atka, Alaska · 2241 days ago · 30 km deep · 55 km away
  30. 1.954 km ESE of Atka, Alaska · 2241 days ago · 73 km deep · 62 km away
  31. 1.783 km SSW of Atka, Alaska · 2241 days ago · 15 km deep · 35 km away
  32. 2.484 km W of Atka, Alaska · 2241 days ago · 242 km deep · 91 km away
  33. 1.920 km WSW of Atka, Alaska · 2240 days ago · 164 km deep · 39 km away
  34. 2.339 km E of Atka, Alaska · 2240 days ago · 119 km deep · 72 km away
  35. 1.921 km E of Atka, Alaska · 2239 days ago · 143 km deep · 52 km away
  36. 1.721 km ENE of Atka, Alaska · 2239 days ago · 143 km deep · 63 km away
  37. 3.128 km NW of Atka, Alaska · 2239 days ago · 230 km deep · 67 km away
  38. 1.770 km SSW of Atka, Alaska · 2237 days ago · 26 km deep · 30 km away
  39. 1.773 km W of Atka, Alaska · 2236 days ago · 86 km deep · 77 km away
  40. 1.658 km SW of Atka, Alaska · 2235 days ago · 58 km deep · 39 km away
  41. 2.336 km NNW of Atka, Alaska · 2235 days ago · 193 km deep · 83 km away
  42. 1.869 km SE of Atka, Alaska · 2234 days ago · 23 km deep · 59 km away
  43. 3.48 km ESE of Atka, Alaska · 2232 days ago · 184 km deep · 48 km away
  44. 1.824 km SSW of Atka, Alaska · 2232 days ago · 171 km deep · 26 km away
  45. 1.564 km SSE of Atka, Alaska · 2232 days ago · 3 km deep · 31 km away
  46. 2.99 km WSW of Atka, Alaska · 2231 days ago · 222 km deep · 46 km away
  47. 2.8Andreanof Islands, Aleutian Islands, Alaska · 2231 days ago · 205 km deep · 65 km away
  48. 1.587 km SW of Atka, Alaska · 2230 days ago · 28 km deep · 61 km away
  49. 1.885 km SE of Atka, Alaska · 2230 days ago · 13 km deep · 76 km away
  50. 2.668 km SSE of Atka, Alaska · 2230 days ago · 28 km deep · 38 km away
  51. 1.767 km SW of Atka, Alaska · 2229 days ago · 40 km deep · 43 km away
  52. 2.214 km ENE of Atka, Alaska · 2229 days ago · 101 km deep · 57 km away
  53. 1.850 km S of Atka, Alaska · 2228 days ago · 26 km deep · 3 km away
  54. 3.054 km SW of Atka, Alaska · 2228 days ago · 75 km deep · 36 km away
  55. 2.119 km WSW of Atka, Alaska · 2227 days ago · 5 km deep · 41 km away
  56. 2.679 km SW of Atka, Alaska · 2227 days ago · 25 km deep · 45 km away
  57. 1.817 km W of Atka, Alaska · 2226 days ago · 99 km deep · 50 km away
  58. 1.6102 km ESE of Adak, Alaska · 2226 days ago · 30 km deep · 74 km away
  59. 1.5120 km SSW of Atka, Alaska · 2226 days ago · 9 km deep · 78 km away
  60. 1.540 km SSE of Atka, Alaska · 2226 days ago · 50 km deep · 19 km away

The first 60 of 111.

Before

  1. 1.944 km SE of Atka, Alaska · 2254 days ago · 10 km deep · 40 km away
  2. 1.958 km NW of Atka, Alaska · 2255 days ago · 176 km deep · 97 km away
  3. 2.667 km WSW of Atka, Alaska · 2255 days ago · 10 km deep · 52 km away
  4. 2.779 km SW of Atka, Alaska · 2256 days ago · 23 km deep · 42 km away
  5. 1.662 km E of Atka, Alaska · 2256 days ago · 5 km deep · 84 km away
  6. 3.387 km SE of Atka, Alaska · 2256 days ago · 22 km deep · 67 km away
  7. 1.864 km E of Atka, Alaska · 2256 days ago · 6 km deep · 89 km away
  8. 1.646 km SSE of Atka, Alaska · 2256 days ago · 42 km deep · 30 km away
  9. 2.234 km W of Atka, Alaska · 2257 days ago · 204 km deep · 59 km away
  10. 1.617 km WSW of Atka, Alaska · 2258 days ago · 10 km deep · 41 km away
  11. 2.185 km ESE of Adak, Alaska · 2258 days ago · 26 km deep · 96 km away
  12. 1.734 km S of Atka, Alaska · 2258 days ago · 56 km deep · 15 km away
  13. 1.521 km SSE of Atka, Alaska · 2258 days ago · 59 km deep · 30 km away
  14. 1.776 km SE of Atka, Alaska · 2259 days ago · 40 km deep · 67 km away
  15. 1.619 km W of Atka, Alaska · 2260 days ago · 19 km deep · 52 km away
  16. 2.263 km SSE of Atka, Alaska · 2261 days ago · 46 km deep · 27 km away
  17. 2.291 km SW of Atka, Alaska · 2262 days ago · 25 km deep · 62 km away
  18. 2.150 km NW of Atka, Alaska · 2262 days ago · 187 km deep · 90 km away
  19. 1.665 km SSW of Atka, Alaska · 2262 days ago · 22 km deep · 19 km away
  20. 1.871 km E of Atka, Alaska · 2264 days ago · 200 km deep · 99 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000bgb9 (also filed as ak0209qy520t). Read Thu, Oct 1, 2026, 1:05 AM UTC.