Alaska earthquakes

M1.8 earthquake 75 km E of Port Alsworth, Alaska

A magnitude 1.8 earthquake struck 75 km E of Port Alsworth, Alaska on Wed, Feb 24, 2021, 8:23 PM AKST (05:23 UTC), 121 km (75 mi) below the surface.

A larger quake followed: M4.2 41 km E of Pedro Bay, Alaska. This one was a foreshock.

Ninilchik forecastMore in Alaska

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.8 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2021-02-25 05:23:28 UTC
Depth
120.5 km (74.9 mi), intermediate-depth
Epicenter
60.285° N, 152.965° 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.

Stations used
40

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: at least 200 in the 60 days after this one and at least 200 in the 30 days before it.

After

  1. 1.623 km WNW of Nikiski, Alaska · 2045 days ago · 75 km deep · 91 km away
  2. 2.641 km ENE of Pedro Bay, Alaska · 2045 days ago · 127 km deep · 52 km away
  3. 1.6Southern Alaska · 2044 days ago · 96 km deep · 26 km away
  4. 1.844 km WNW of Anchor Point, Alaska · 2044 days ago · 83 km deep · 51 km away
  5. 1.539 km W of Anchor Point, Alaska · 2044 days ago · 86 km deep · 62 km away
  6. 1.649 km E of Pedro Bay, Alaska · 2044 days ago · 117 km deep · 49 km away
  7. 1.79 km NW of Happy Valley, Alaska · 2044 days ago · 60 km deep · 70 km away
  8. 1.548 km W of Anchor Point, Alaska · 2044 days ago · 89 km deep · 63 km away
  9. 1.661 km ENE of Pedro Bay, Alaska · 2044 days ago · 126 km deep · 33 km away
  10. 1.549 km WNW of Nikiski, Alaska · 2044 days ago · 99 km deep · 85 km away
  11. 1.667 km ENE of Pedro Bay, Alaska · 2043 days ago · 109 km deep · 26 km away
  12. 1.738 km WNW of Ninilchik, Alaska · 2043 days ago · 92 km deep · 39 km away
  13. 1.941 km E of Pedro Bay, Alaska · 2043 days ago · 117 km deep · 59 km away
  14. 1.541 km WNW of Nanwalek, Alaska · 2043 days ago · 88 km deep · 86 km away
  15. 2.070 km WNW of Nikiski, Alaska · 2043 days ago · 117 km deep · 79 km away
  16. 1.521 km WNW of Happy Valley, Alaska · 2043 days ago · 86 km deep · 56 km away
  17. 1.662 km WNW of Anchor Point, Alaska · 2043 days ago · 81 km deep · 43 km away
  18. 3.655 km W of Happy Valley, Alaska · 2043 days ago · 95 km deep · 33 km away · felt by 3
  19. 2.134 km ENE of Pedro Bay, Alaska · 2043 days ago · 152 km deep · 51 km away
  20. 1.833 km W of Anchor Point, Alaska · 2043 days ago · 72 km deep · 60 km away
  21. 1.865 km ENE of Pedro Bay, Alaska · 2043 days ago · 121 km deep · 21 km away
  22. 1.623 km W of Happy Valley, Alaska · 2043 days ago · 86 km deep · 56 km away
  23. 1.854 km NE of Pedro Bay, Alaska · 2043 days ago · 135 km deep · 31 km away
  24. 1.96 km NNW of Clam Gulch, Alaska · 2042 days ago · 57 km deep · 85 km away
  25. 1.855 km SE of Pedro Bay, Alaska · 2042 days ago · 118 km deep · 98 km away
  26. 1.664 km ESE of Pedro Bay, Alaska · 2042 days ago · 108 km deep · 75 km away
  27. 1.528 km NW of Ninilchik, Alaska · 2042 days ago · 86 km deep · 51 km away · felt by 3
  28. 1.642 km WNW of Ninilchik, Alaska · 2042 days ago · 92 km deep · 34 km away
  29. 1.657 km W of Happy Valley, Alaska · 2042 days ago · 92 km deep · 31 km away
  30. 1.670 km WNW of Ninilchik, Alaska · 2042 days ago · 110 km deep · 10 km away
  31. 1.554 km NW of Ninilchik, Alaska · 2042 days ago · 99 km deep · 28 km away
  32. 2.653 km E of Pedro Bay, Alaska · 2042 days ago · 106 km deep · 63 km away
  33. 1.665 km ESE of Pedro Bay, Alaska · 2042 days ago · 98 km deep · 77 km away
  34. 1.670 km E of Port Alsworth, Alaska · 2042 days ago · 131 km deep · 6 km away
  35. 1.549 km WNW of Clam Gulch, Alaska · 2041 days ago · 85 km deep · 43 km away
  36. 2.153 km ENE of Pedro Bay, Alaska · 2041 days ago · 118 km deep · 35 km away
  37. 1.951 km W of Anchor Point, Alaska · 2041 days ago · 88 km deep · 60 km away
  38. 2.249 km WNW of Nanwalek, Alaska · 2041 days ago · 79 km deep · 90 km away
  39. 2.050 km ESE of Pedro Bay, Alaska · 2041 days ago · 100 km deep · 81 km away
  40. 1.764 km WNW of Ninilchik, Alaska · 2041 days ago · 99 km deep · 13 km away
  41. 2.043 km WNW of Ninilchik, Alaska · 2041 days ago · 94 km deep · 33 km away
  42. 1.843 km WNW of Ninilchik, Alaska · 2040 days ago · 82 km deep · 34 km away
  43. 1.617 km WNW of Anchor Point, Alaska · 2040 days ago · 70 km deep · 70 km away
  44. 3.354 km WNW of Ninilchik, Alaska · 2040 days ago · 104 km deep · 22 km away · felt by 1
  45. 2.359 km ESE of Pedro Bay, Alaska · 2040 days ago · 99 km deep · 70 km away
  46. 1.823 km WNW of Nikiski, Alaska · 2040 days ago · 77 km deep · 88 km away
  47. 1.970 km WNW of Nikiski, Alaska · 2040 days ago · 112 km deep · 73 km away
  48. 1.658 km WNW of Anchor Point, Alaska · 2040 days ago · 100 km deep · 42 km away
  49. 1.558 km W of Tyonek, Alaska · 2040 days ago · 99 km deep · 100 km away
  50. 1.77 km ESE of Kalifornsky, Alaska · 2040 days ago · 16 km deep · 99 km away · felt by 1
  51. 1.661 km WNW of Nanwalek, Alaska · 2040 days ago · 101 km deep · 81 km away
  52. 1.755 km ENE of Pedro Bay, Alaska · 2039 days ago · 127 km deep · 33 km away
  53. 1.646 km WNW of Ninilchik, Alaska · 2039 days ago · 86 km deep · 30 km away
  54. 2.121 km W of Ninilchik, Alaska · 2039 days ago · 65 km deep · 56 km away
  55. 1.641 km WNW of Clam Gulch, Alaska · 2039 days ago · 80 km deep · 50 km away
  56. 1.641 km ESE of Pedro Bay, Alaska · 2039 days ago · 120 km deep · 81 km away
  57. 1.950 km W of Anchor Point, Alaska · 2039 days ago · 81 km deep · 63 km away
  58. 1.859 km WNW of Anchor Point, Alaska · 2039 days ago · 90 km deep · 37 km away
  59. 1.864 km W of Happy Valley, Alaska · 2039 days ago · 92 km deep · 28 km away
  60. 1.856 km ENE of Pedro Bay, Alaska · 2038 days ago · 120 km deep · 35 km away

The first 60 of at least 200.

Before

  1. 2.052 km NE of Pedro Bay, Alaska · 2045 days ago · 138 km deep · 33 km away
  2. 1.556 km W of Tyonek, Alaska · 2045 days ago · 97 km deep · 91 km away
  3. 1.827 km W of Anchor Point, Alaska · 2045 days ago · 84 km deep · 64 km away
  4. 2.610 km SW of Anchor Point, Alaska · 2045 days ago · 61 km deep · 86 km away
  5. 1.936 km WNW of Ninilchik, Alaska · 2045 days ago · 90 km deep · 41 km away
  6. 1.655 km W of Tyonek, Alaska · 2045 days ago · 93 km deep · 99 km away
  7. 1.864 km W of Tyonek, Alaska · 2045 days ago · 106 km deep · 94 km away
  8. 1.669 km W of Tyonek, Alaska · 2045 days ago · 117 km deep · 90 km away
  9. 1.643 km NW of Ninilchik, Alaska · 2045 days ago · 91 km deep · 37 km away
  10. 1.659 km NW of Ninilchik, Alaska · 2045 days ago · 101 km deep · 32 km away
  11. 1.662 km WNW of Anchor Point, Alaska · 2046 days ago · 94 km deep · 36 km away
  12. 2.856 km W of Anchor Point, Alaska · 2046 days ago · 90 km deep · 62 km away
  13. 1.558 km ENE of Pedro Bay, Alaska · 2046 days ago · 120 km deep · 35 km away
  14. 1.561 km NW of Ninilchik, Alaska · 2046 days ago · 94 km deep · 29 km away
  15. 1.826 km WNW of Anchor Point, Alaska · 2046 days ago · 83 km deep · 59 km away
  16. 1.520 km NNW of Nanwalek, Alaska · 2046 days ago · 61 km deep · 99 km away
  17. 1.8Southern Alaska · 2046 days ago · 81 km deep · 41 km away
  18. 1.830 km E of Pedro Bay, Alaska · 2046 days ago · 128 km deep · 62 km away
  19. 1.815 km WNW of Nikiski, Alaska · 2047 days ago · 72 km deep · 94 km away
  20. 1.665 km ESE of Pedro Bay, Alaska · 2047 days ago · 99 km deep · 77 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0212kp7lcd. Read Thu, Oct 1, 2026, 9:36 PM UTC.