Alaska earthquakes

M1.9 earthquake 20 km WNW of Nikiski, Alaska

A magnitude 1.9 earthquake struck 20 km WNW of Nikiski, Alaska on Sat, Mar 20, 2021, 4:03 AM AKDT (12:03 UTC), 79 km (49 mi) below the surface.

A larger quake followed: M3.6 2 km WNW of Ninilchik, Alaska. This one was a foreshock.

Nikiski 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
1.9 (ml), micro
Local time
UTC
2021-03-20 12:03:39 UTC
Depth
78.6 km (48.8 mi), intermediate-depth
Epicenter
60.755° N, 151.646° 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
43

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 202 in the 60 days after this one and 181 in the 30 days before it.

After

  1. 1.769 km W of Tyonek, Alaska · 2019 days ago · 115 km deep · 54 km away
  2. 2.513 km W of Point Possession, Alaska · 2019 days ago · 28 km deep · 43 km away
  3. 1.526 km W of Salamatof, Alaska · 2018 days ago · 79 km deep · 18 km away
  4. 2.386 km W of Salamatof, Alaska · 2018 days ago · 132 km deep · 68 km away
  5. 1.651 km NW of Ninilchik, Alaska · 2018 days ago · 87 km deep · 63 km away
  6. 2.567 km ENE of Port Alsworth, Alaska · 2018 days ago · 137 km deep · 92 km away
  7. 1.877 km WNW of Nikiski, Alaska · 2018 days ago · 118 km deep · 56 km away
  8. 2.118 km E of Beluga, Alaska · 2018 days ago · 10 km deep · 62 km away
  9. 1.543 km W of Happy Valley, Alaska · 2018 days ago · 80 km deep · 94 km away
  10. 1.846 km WNW of Ninilchik, Alaska · 2018 days ago · 91 km deep · 66 km away
  11. 2.361 km WNW of Happy Valley, Alaska · 2017 days ago · 104 km deep · 92 km away
  12. 1.632 km WNW of Nikiski, Alaska · 2017 days ago · 75 km deep · 12 km away
  13. 1.5Southern Alaska · 2017 days ago · 140 km deep · 96 km away
  14. 1.871 km WNW of Ninilchik, Alaska · 2017 days ago · 123 km deep · 87 km away · felt by 1
  15. 1.5Southern Alaska · 2017 days ago · 69 km deep · 67 km away
  16. 2.128 km SW of Susitna, Alaska · 2017 days ago · 64 km deep · 80 km away
  17. 1.682 km NE of Port Alsworth, Alaska · 2016 days ago · 139 km deep · 81 km away
  18. 1.625 km WNW of Nikiski, Alaska · 2016 days ago · 79 km deep · 5 km away
  19. 1.545 km WNW of Ninilchik, Alaska · 2016 days ago · 92 km deep · 73 km away
  20. 1.669 km E of Port Alsworth, Alaska · 2016 days ago · 117 km deep · 100 km away
  21. 1.613 km W of Clam Gulch, Alaska · 2016 days ago · 71 km deep · 56 km away
  22. 1.923 km E of Point Possession, Alaska · 2015 days ago · 51 km deep · 77 km away
  23. 1.681 km ENE of Port Alsworth, Alaska · 2015 days ago · 137 km deep · 79 km away
  24. 1.714 km ESE of Ninilchik, Alaska · 2015 days ago · 47 km deep · 87 km away
  25. 1.622 km ESE of Ninilchik, Alaska · 2015 days ago · 46 km deep · 89 km away
  26. 1.527 km NNW of Ninilchik, Alaska · 2014 days ago · 71 km deep · 55 km away
  27. 1.821 km W of Point MacKenzie, Alaska · 2014 days ago · 53 km deep · 96 km away
  28. 1.719 km W of Tyonek, Alaska · 2014 days ago · 74 km deep · 33 km away
  29. 1.67 km NNE of Kalifornsky, Alaska · 2014 days ago · 74 km deep · 38 km away
  30. 1.525 km W of Happy Valley, Alaska · 2014 days ago · 90 km deep · 92 km away
  31. 1.828 km SW of Susitna, Alaska · 2014 days ago · 69 km deep · 80 km away
  32. 1.847 km W of Kalifornsky, Alaska · 2014 days ago · 103 km deep · 41 km away
  33. 2.06 km N of Ridgeway, Alaska · 2014 days ago · 63 km deep · 36 km away
  34. 1.715 km NW of Nikiski, Alaska · 2013 days ago · 69 km deep · 10 km away
  35. 1.670 km WNW of Nikiski, Alaska · 2013 days ago · 118 km deep · 50 km away
  36. 2.217 km W of Tyonek, Alaska · 2013 days ago · 71 km deep · 38 km away
  37. 1.553 km WNW of Happy Valley, Alaska · 2013 days ago · 93 km deep · 88 km away
  38. 1.858 km WNW of Happy Valley, Alaska · 2012 days ago · 90 km deep · 94 km away
  39. 1.613 km N of Fox River, Alaska · 2012 days ago · 55 km deep · 94 km away
  40. 1.521 km W of Point MacKenzie, Alaska · 2012 days ago · 52 km deep · 94 km away
  41. 2.465 km WSW of Salamatof, Alaska · 2012 days ago · 99 km deep · 55 km away
  42. 1.714 km NNW of Point Possession, Alaska · 2012 days ago · 61 km deep · 54 km away
  43. 2.1Kenai Peninsula, Alaska · 2012 days ago · 75 km deep · 11 km away
  44. 1.657 km WNW of Ninilchik, Alaska · 2012 days ago · 103 km deep · 76 km away
  45. 1.69 km NNW of Point Possession, Alaska · 2012 days ago · 57 km deep · 54 km away
  46. 1.7Southern Alaska · 2011 days ago · 96 km deep · 85 km away
  47. 1.522 km W of Kalifornsky, Alaska · 2011 days ago · 77 km deep · 35 km away
  48. 1.944 km W of Tyonek, Alaska · 2011 days ago · 87 km deep · 33 km away
  49. 2.118 km NW of Hope, Alaska · 2010 days ago · 37 km deep · 99 km away
  50. 1.543 km W of Kalifornsky, Alaska · 2010 days ago · 89 km deep · 39 km away
  51. 1.923 km WNW of Tyonek, Alaska · 2010 days ago · 77 km deep · 41 km away
  52. 1.932 km WNW of Nikiski, Alaska · 2010 days ago · 83 km deep · 12 km away
  53. 1.914 km WNW of Point Possession, Alaska · 2010 days ago · 26 km deep · 43 km away
  54. 1.614 km SW of Susitna, Alaska · 2010 days ago · 55 km deep · 92 km away
  55. 1.731 km W of Nikiski, Alaska · 2010 days ago · 78 km deep · 12 km away
  56. 1.53 km WNW of Ridgeway, Alaska · 2009 days ago · 61 km deep · 36 km away
  57. 1.649 km NW of Ninilchik, Alaska · 2009 days ago · 89 km deep · 64 km away
  58. 1.854 km WNW of Ninilchik, Alaska · 2009 days ago · 100 km deep · 82 km away
  59. 1.616 km SE of Kasilof, Alaska · 2009 days ago · 61 km deep · 66 km away
  60. 1.939 km S of Skwentna, Alaska · 2009 days ago · 75 km deep · 99 km away

The first 60 of at least 202.

Before

  1. 1.673 km WNW of Happy Valley, Alaska · 2019 days ago · 106 km deep · 97 km away
  2. 1.676 km NW of Ninilchik, Alaska · 2019 days ago · 114 km deep · 70 km away
  3. 1.545 km NW of Ninilchik, Alaska · 2019 days ago · 88 km deep · 60 km away
  4. 1.742 km W of Salamatof, Alaska · 2019 days ago · 81 km deep · 27 km away
  5. 2.421 km NNW of Fox River, Alaska · 2019 days ago · 59 km deep · 85 km away
  6. 1.646 km NW of Ninilchik, Alaska · 2019 days ago · 91 km deep · 55 km away
  7. 1.934 km WNW of Clam Gulch, Alaska · 2020 days ago · 83 km deep · 46 km away
  8. 1.512 km ESE of Nikiski, Alaska · 2020 days ago · 26 km deep · 33 km away
  9. 2.068 km WSW of Salamatof, Alaska · 2020 days ago · 95 km deep · 57 km away
  10. 1.866 km SW of Skwentna, Alaska · 2020 days ago · 113 km deep · 88 km away
  11. 1.918 km SE of Point Possession, Alaska · 2020 days ago · 42 km deep · 66 km away
  12. 2.445 km WNW of Happy Valley, Alaska · 2021 days ago · 92 km deep · 88 km away
  13. 1.815 km E of Beluga, Alaska · 2021 days ago · 15 km deep · 61 km away
  14. 2.1104 km NE of Port Alsworth, Alaska · 2021 days ago · 194 km deep · 91 km away
  15. 1.516 km E of Happy Valley, Alaska · 2021 days ago · 60 km deep · 92 km away
  16. 1.554 km WNW of Tyonek, Alaska · 2021 days ago · 106 km deep · 55 km away
  17. 1.559 km WNW of Happy Valley, Alaska · 2021 days ago · 104 km deep · 93 km away
  18. 2.045 km SSW of Skwentna, Alaska · 2021 days ago · 82 km deep · 93 km away
  19. 1.941 km W of Susitna, Alaska · 2021 days ago · 83 km deep · 88 km away
  20. 1.512 km WNW of Fox River, Alaska · 2021 days ago · 70 km deep · 97 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0213mumck5. Read Tue, Sep 29, 2026, 6:16 AM UTC.