Alaska earthquakes

M1.5 earthquake Southern Alaska

A magnitude 1.5 earthquake struck in Southern Alaska on Sun, Dec 19, 2021, 8:23 PM AKST (05:23 UTC), 107 km (66 mi) below the surface.

A larger quake followed: M5.9 58 km E of Port Alsworth, 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
1.5 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2021-12-20 05:23:41 UTC
Depth
106.9 km (66.4 mi), intermediate-depth
Epicenter
60.221° N, 152.806° 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
32

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 201 in the 60 days after this one and at least 200 in the 30 days before it.

After

  1. 1.650 km WNW of Happy Valley, Alaska · 1747 days ago · 93 km deep · 17 km away
  2. 1.548 km W of Anchor Point, Alaska · 1747 days ago · 84 km deep · 50 km away
  3. 1.640 km WNW of Nanwalek, Alaska · 1747 days ago · 72 km deep · 82 km away
  4. 1.762 km E of Port Alsworth, Alaska · 1747 days ago · 137 km deep · 22 km away
  5. 1.567 km WNW of Happy Valley, Alaska · 1746 days ago · 118 km deep · 13 km away
  6. 1.51 km NNW of Kasilof, Alaska · 1746 days ago · 55 km deep · 85 km away
  7. 1.663 km WSW of Salamatof, Alaska · 1746 days ago · 100 km deep · 35 km away
  8. 1.666 km ENE of Pedro Bay, Alaska · 1746 days ago · 119 km deep · 21 km away
  9. 1.936 km WNW of Kalifornsky, Alaska · 1746 days ago · 79 km deep · 56 km away
  10. 1.763 km ESE of Pedro Bay, Alaska · 1746 days ago · 98 km deep · 65 km away
  11. 1.957 km E of Port Alsworth, Alaska · 1746 days ago · 141 km deep · 26 km away
  12. 1.758 km WSW of Anchor Point, Alaska · 1746 days ago · 94 km deep · 61 km away
  13. 1.847 km W of Anchor Point, Alaska · 1746 days ago · 80 km deep · 47 km away
  14. 1.848 km W of Salamatof, Alaska · 1745 days ago · 84 km deep · 54 km away
  15. 1.666 km W of Tyonek, Alaska · 1745 days ago · 112 km deep · 92 km away
  16. 5.958 km E of Port Alsworth, Alaska · 1745 days ago · 151 km deep · 28 km away · felt by 1,888 · tsunami flag
  17. 1.957 km E of Port Alsworth, Alaska · 1745 days ago · 151 km deep · 29 km away
  18. 1.634 km WNW of Happy Valley, Alaska · 1745 days ago · 75 km deep · 34 km away
  19. 2.35 km NNE of Nikolaevsk, Alaska · 1745 days ago · 46 km deep · 81 km away · felt by 1
  20. 2.750 km E of Pedro Bay, Alaska · 1745 days ago · 110 km deep · 56 km away
  21. 1.5Southern Alaska · 1745 days ago · 89 km deep · 35 km away
  22. 2.133 km WSW of Anchor Point, Alaska · 1745 days ago · 71 km deep · 62 km away
  23. 1.940 km ENE of Port Alsworth, Alaska · 1745 days ago · 196 km deep · 48 km away
  24. 1.56 km S of Kenai, Alaska · 1745 days ago · 62 km deep · 90 km away
  25. 1.848 km E of Port Alsworth, Alaska · 1745 days ago · 153 km deep · 37 km away
  26. 1.823 km WSW of Salamatof, Alaska · 1745 days ago · 69 km deep · 69 km away
  27. 1.567 km WNW of Nikiski, Alaska · 1745 days ago · 110 km deep · 85 km away
  28. 2.577 km ENE of Port Alsworth, Alaska · 1745 days ago · 141 km deep · 25 km away
  29. 1.732 km W of Salamatof, Alaska · 1745 days ago · 81 km deep · 70 km away
  30. 1.556 km E of Pedro Bay, Alaska · 1744 days ago · 102 km deep · 50 km away
  31. 1.5Southern Alaska · 1744 days ago · 175 km deep · 48 km away
  32. 1.551 km W of Anchor Point, Alaska · 1744 days ago · 83 km deep · 46 km away
  33. 1.965 km WNW of Nanwalek, Alaska · 1744 days ago · 101 km deep · 74 km away
  34. 1.563 km WNW of Nikiski, Alaska · 1744 days ago · 1 km deep · 87 km away
  35. 1.650 km WNW of Clam Gulch, Alaska · 1744 days ago · 86 km deep · 39 km away
  36. 1.560 km W of Ninilchik, Alaska · 1744 days ago · 102 km deep · 8 km away
  37. 2.040 km E of Pedro Bay, Alaska · 1744 days ago · 121 km deep · 57 km away
  38. 1.553 km WNW of Happy Valley, Alaska · 1744 days ago · 82 km deep · 15 km away
  39. 2.052 km W of Anchor Point, Alaska · 1743 days ago · 90 km deep · 53 km away
  40. 1.650 km ENE of Pedro Bay, Alaska · 1743 days ago · 119 km deep · 37 km away
  41. 1.851 km W of Anchor Point, Alaska · 1743 days ago · 78 km deep · 41 km away
  42. 1.572 km W of Nikiski, Alaska · 1743 days ago · 115 km deep · 65 km away
  43. 1.517 km W of Anchor Point, Alaska · 1743 days ago · 74 km deep · 61 km away
  44. 2.434 km WNW of Anchor Point, Alaska · 1743 days ago · 92 km deep · 45 km away
  45. 1.763 km WNW of Happy Valley, Alaska · 1743 days ago · 94 km deep · 7 km away
  46. 1.647 km WNW of Happy Valley, Alaska · 1743 days ago · 95 km deep · 24 km away
  47. 1.616 km SE of Kasilof, Alaska · 1743 days ago · 63 km deep · 95 km away
  48. 1.826 km W of Anchor Point, Alaska · 1743 days ago · 86 km deep · 60 km away
  49. 1.734 km E of Pedro Bay, Alaska · 1742 days ago · 134 km deep · 57 km away
  50. 1.559 km WNW of Anchor Point, Alaska · 1742 days ago · 88 km deep · 34 km away
  51. 2.145 km WSW of Anchor Point, Alaska · 1742 days ago · 85 km deep · 63 km away
  52. 1.868 km W of Salamatof, Alaska · 1742 days ago · 128 km deep · 47 km away
  53. 3.156 km E of Port Alsworth, Alaska · 1742 days ago · 150 km deep · 28 km away
  54. 1.547 km WNW of Ninilchik, Alaska · 1742 days ago · 93 km deep · 19 km away
  55. 1.563 km ENE of Pedro Bay, Alaska · 1742 days ago · 153 km deep · 23 km away
  56. 1.841 km SE of Pedro Bay, Alaska · 1742 days ago · 117 km deep · 85 km away
  57. 2.055 km WNW of Anchor Point, Alaska · 1742 days ago · 101 km deep · 32 km away
  58. 1.648 km ENE of Pedro Bay, Alaska · 1742 days ago · 118 km deep · 44 km away
  59. 2.1Southern Alaska · 1741 days ago · 148 km deep · 43 km away
  60. 1.663 km WNW of Nanwalek, Alaska · 1741 days ago · 105 km deep · 72 km away

The first 60 of at least 201.

Before

  1. 2.1Southern Alaska · 1747 days ago · 103 km deep · 52 km away
  2. 1.556 km W of Anchor Point, Alaska · 1747 days ago · 95 km deep · 53 km away
  3. 1.64 km SE of Happy Valley, Alaska · 1747 days ago · 65 km deep · 71 km away
  4. 1.875 km NE of Port Alsworth, Alaska · 1747 days ago · 169 km deep · 55 km away
  5. 1.659 km WNW of Happy Valley, Alaska · 1747 days ago · 103 km deep · 17 km away
  6. 1.862 km E of Port Alsworth, Alaska · 1747 days ago · 145 km deep · 23 km away
  7. 2.957 km WNW of Ninilchik, Alaska · 1747 days ago · 98 km deep · 14 km away
  8. 2.254 km E of Pedro Bay, Alaska · 1747 days ago · 103 km deep · 59 km away
  9. 1.814 km NW of Fox River, Alaska · 1747 days ago · 44 km deep · 96 km away
  10. 1.716 km SE of Clam Gulch, Alaska · 1748 days ago · 61 km deep · 91 km away
  11. 1.565 km WNW of Nanwalek, Alaska · 1748 days ago · 101 km deep · 70 km away
  12. 1.6Southern Alaska · 1748 days ago · 123 km deep · 33 km away
  13. 1.630 km NW of Nanwalek, Alaska · 1748 days ago · 65 km deep · 79 km away
  14. 4.719 km ENE of Pedro Bay, Alaska · 1748 days ago · 163 km deep · 68 km away · felt by 104 · tsunami flag
  15. 1.863 km W of Tyonek, Alaska · 1748 days ago · 114 km deep · 95 km away
  16. 1.758 km WNW of Anchor Point, Alaska · 1748 days ago · 97 km deep · 36 km away
  17. 1.565 km WNW of Happy Valley, Alaska · 1748 days ago · 114 km deep · 13 km away
  18. 2.945 km NE of Pedro Bay, Alaska · 1749 days ago · 163 km deep · 42 km away
  19. 1.514 km SW of Anchor Point, Alaska · 1749 days ago · 68 km deep · 72 km away
  20. 1.853 km E of Pedro Bay, Alaska · 1749 days ago · 98 km deep · 57 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021g9jd1iv. Read Fri, Oct 2, 2026, 2:54 AM UTC.