Alaska earthquakes

M3.6 earthquake 107 km E of Chignik, Alaska

A magnitude 3.6 earthquake struck 107 km E of Chignik, Alaska on Mon, Aug 28, 2023, 6:41 PM AKDT (02:41 UTC), 7 km (4 mi) below the surface.

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Map

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
Alaska Earthquake Center
Local time
UTC
2023-08-29 02:41:50 UTC
Depth
6.6 km (4.1 mi), shallow
Epicenter
56.424° N, 156.677° W
Region
Alaska
Strongest shaking
II, weak shaking
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)Alaska Earthquake CenterPreferred · Preliminary
3.7ML, local (Richter)USGS National Earthquake Information CenterReviewed · ±0.059 · 38 stations

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated
II, weak shaking
Peak ground acceleration
0.5% of gravity
Peak ground velocity
-2.1 cm/s
Map
Automatic
USGS ShakeMap: estimated shaking intensity around the epicenter
Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Stations used
117

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 69 in the 60 days after this one and 39 in the 30 days before it.

After

  1. 2.992 km W of Akhiok, Alaska · 1128 days ago · 62 km deep · 83 km away
  2. 2.6114 km E of Chignik, Alaska · 1128 days ago · 13 km deep · 13 km away
  3. 2.2128 km SSE of Ugashik, Alaska · 1128 days ago · 39 km deep · 25 km away
  4. 2.5105 km E of Chignik, Alaska · 1127 days ago · 7 km deep · 27 km away
  5. 2.467 km E of Chignik, Alaska · 1126 days ago · 51 km deep · 40 km away
  6. 2.2101 km E of Chignik, Alaska · 1124 days ago · 65 km deep · 9 km away
  7. 2.170 km ESE of Ugashik, Alaska · 1124 days ago · 4 km deep · 85 km away
  8. 2.5Alaska Peninsula · 1123 days ago · 2 km deep · 81 km away
  9. 2.073 km SE of Ugashik, Alaska · 1123 days ago · 4 km deep · 77 km away
  10. 2.2114 km WSW of Akhiok, Alaska · 1122 days ago · 6 km deep · 53 km away
  11. 2.8105 km SSE of Ugashik, Alaska · 1120 days ago · 62 km deep · 24 km away
  12. 2.272 km SE of Ugashik, Alaska · 1120 days ago · 4 km deep · 80 km away
  13. 1.7108 km SE of Ugashik, Alaska · 1119 days ago · 53 km deep · 46 km away
  14. 1.6Alaska Peninsula · 1118 days ago · 1 km deep · 81 km away
  15. 2.174 km ESE of Chignik, Alaska · 1116 days ago · 15 km deep · 54 km away
  16. 2.0112 km SE of Ugashik, Alaska · 1115 days ago · 1 km deep · 59 km away
  17. 2.762 km E of Chignik, Alaska · 1115 days ago · 46 km deep · 47 km away
  18. 1.864 km SSW of Ugashik, Alaska · 1114 days ago · 2 km deep · 82 km away
  19. 2.172 km SE of Chignik, Alaska · 1113 days ago · 41 km deep · 98 km away
  20. 2.0155 km ESE of Chignik, Alaska · 1112 days ago · 10 km deep · 73 km away
  21. 2.5117 km SW of Akhiok, Alaska · 1111 days ago · 21 km deep · 66 km away
  22. 1.893 km ESE of Ugashik, Alaska · 1111 days ago · 71 km deep · 82 km away
  23. 1.661 km SE of Ugashik, Alaska · 1109 days ago · 8 km deep · 86 km away
  24. 2.094 km SW of Karluk, Alaska · 1106 days ago · 63 km deep · 93 km away
  25. 2.8114 km E of Chignik, Alaska · 1104 days ago · 46 km deep · 22 km away
  26. 1.8Alaska Peninsula · 1104 days ago · 47 km deep · 20 km away
  27. 2.471 km SE of Ugashik, Alaska · 1103 days ago · 3 km deep · 82 km away
  28. 2.472 km SE of Ugashik, Alaska · 1103 days ago · 2 km deep · 81 km away
  29. 1.574 km SE of Ugashik, Alaska · 1103 days ago · 0 km deep · 79 km away
  30. 1.613 km NE of Chignik, Alaska · 1103 days ago · 88 km deep · 98 km away
  31. 2.580 km SE of Ugashik, Alaska · 1103 days ago · 8 km deep · 79 km away
  32. 1.754 km E of Chignik, Alaska · 1103 days ago · 20 km deep · 58 km away
  33. 1.6113 km WSW of Akhiok, Alaska · 1103 days ago · 9 km deep · 58 km away
  34. 1.8111 km E of Chignik, Alaska · 1103 days ago · 19 km deep · 9 km away
  35. 2.239 km S of Ugashik, Alaska · 1101 days ago · 8 km deep · 96 km away
  36. 2.174 km SE of Ugashik, Alaska · 1100 days ago · 76 km deep · 69 km away
  37. 1.547 km NE of Chignik, Alaska · 1099 days ago · 7 km deep · 76 km away
  38. 1.794 km SSE of Ugashik, Alaska · 1099 days ago · 56 km deep · 40 km away
  39. 1.6Alaska Peninsula · 1099 days ago · 20 km deep · 32 km away
  40. 1.984 km W of Akhiok, Alaska · 1099 days ago · 2 km deep · 85 km away
  41. 1.595 km W of Akhiok, Alaska · 1098 days ago · 0 km deep · 72 km away
  42. 2.1115 km E of Chignik, Alaska · 1098 days ago · 27 km deep · 17 km away
  43. 2.760 km SSW of Ugashik, Alaska · 1097 days ago · 8 km deep · 90 km away
  44. 3.0113 km SSE of Ugashik, Alaska · 1096 days ago · 81 km deep · 20 km away
  45. 2.073 km SSW of Ugashik, Alaska · 1095 days ago · -3 km deep · 100 km away
  46. 2.191 km W of Akhiok, Alaska · 1095 days ago · 12 km deep · 79 km away
  47. 2.048 km ESE of Ugashik, Alaska · 1095 days ago · 8 km deep · 100 km away
  48. 2.0Alaska Peninsula · 1095 days ago · 3 km deep · 94 km away
  49. 2.0Alaska Peninsula · 1093 days ago · 12 km deep · 47 km away
  50. 1.954 km ESE of Chignik, Alaska · 1093 days ago · 14 km deep · 75 km away
  51. 2.4Alaska Peninsula · 1091 days ago · 19 km deep · 22 km away
  52. 2.376 km E of Chignik, Alaska · 1090 days ago · 50 km deep · 42 km away
  53. 2.1101 km ENE of Chignik, Alaska · 1089 days ago · 85 km deep · 23 km away
  54. 2.2Alaska Peninsula · 1089 days ago · 79 km deep · 77 km away
  55. 2.151 km SSE of Ugashik, Alaska · 1089 days ago · 91 km deep · 78 km away
  56. 2.173 km SE of Ugashik, Alaska · 1085 days ago · 83 km deep · 81 km away
  57. 2.325 km ESE of Chignik, Alaska · 1085 days ago · 64 km deep · 90 km away
  58. 2.2101 km E of Chignik, Alaska · 1083 days ago · 6 km deep · 26 km away
  59. 1.895 km ESE of Ugashik, Alaska · 1083 days ago · 5 km deep · 97 km away
  60. 2.4121 km SSE of Ugashik, Alaska · 1083 days ago · 57 km deep · 30 km away

The first 60 of 69.

Before

  1. 2.299 km E of Chignik, Alaska · 1129 days ago · 3 km deep · 17 km away
  2. 2.256 km ESE of Ugashik, Alaska · 1132 days ago · 90 km deep · 95 km away
  3. 2.7122 km SE of Ugashik, Alaska · 1133 days ago · 7 km deep · 34 km away
  4. 1.577 km ESE of Ugashik, Alaska · 1135 days ago · 77 km deep · 90 km away
  5. 1.564 km ESE of Ugashik, Alaska · 1136 days ago · 1 km deep · 97 km away
  6. 1.668 km SSE of Ugashik, Alaska · 1137 days ago · 79 km deep · 61 km away
  7. 1.9131 km SW of Akhiok, Alaska · 1137 days ago · 23 km deep · 73 km away
  8. 2.873 km W of Akhiok, Alaska · 1138 days ago · 1 km deep · 93 km away
  9. 2.2116 km E of Chignik, Alaska · 1138 days ago · 28 km deep · 12 km away
  10. 2.0115 km ENE of Chignik, Alaska · 1138 days ago · 47 km deep · 14 km away · felt by 1
  11. 2.1109 km W of Akhiok, Alaska · 1139 days ago · 5 km deep · 68 km away
  12. 2.6Alaska Peninsula · 1139 days ago · 72 km deep · 61 km away
  13. 1.9117 km SW of Akhiok, Alaska · 1139 days ago · 33 km deep · 67 km away
  14. 1.975 km SE of Ugashik, Alaska · 1140 days ago · 2 km deep · 81 km away
  15. 1.8127 km E of Chignik, Alaska · 1140 days ago · 29 km deep · 20 km away
  16. 2.693 km W of Akhiok, Alaska · 1140 days ago · 56 km deep · 83 km away
  17. 1.828 km SSE of Chignik, Alaska · 1140 days ago · 62 km deep · 99 km away
  18. 1.670 km NNE of Chignik, Alaska · 1141 days ago · -2 km deep · 97 km away
  19. 2.383 km SSE of Ugashik, Alaska · 1141 days ago · 89 km deep · 45 km away
  20. 2.2107 km SSE of Ugashik, Alaska · 1141 days ago · 1 km deep · 24 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak023b2lyigc (also filed as us7000krqk). Read Thu, Oct 1, 2026, 10:17 AM UTC.