Alaska earthquakes

M1.8 earthquake 83 km E of McCarthy, Alaska

A magnitude 1.8 earthquake struck 83 km E of McCarthy, Alaska on Fri, Aug 20, 2021, 4:38 PM AKDT (00:38 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M3.6 52 km SSW of Alcan Border, Alaska. This one was a foreshock.

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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
1.8 (ml), micro
Local time
UTC
2021-08-21 00:38:47 UTC
Depth
7.6 km (4.7 mi), shallow
Epicenter
61.580° N, 141.377° 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: 26 in the 60 days after this one and 14 in the 30 days before it.

After

  1. 2.487 km E of McCarthy, Alaska · 1864 days ago · 14 km deep · 5 km away
  2. 2.288 km E of McCarthy, Alaska · 1864 days ago · 15 km deep · 5 km away
  3. 1.788 km E of McCarthy, Alaska · 1864 days ago · 11 km deep · 6 km away
  4. 1.688 km E of McCarthy, Alaska · 1858 days ago · 1 km deep · 6 km away
  5. 1.8108 km E of McCarthy, Alaska · 1853 days ago · 9 km deep · 24 km away
  6. 1.690 km E of McCarthy, Alaska · 1846 days ago · 5 km deep · 8 km away
  7. 1.986 km S of Alcan Border, Alaska · 1844 days ago · 3 km deep · 36 km away
  8. 1.691 km E of McCarthy, Alaska · 1842 days ago · 9 km deep · 9 km away
  9. 1.6118 km E of McCarthy, Alaska · 1841 days ago · 9 km deep · 39 km away
  10. 1.6102 km E of McCarthy, Alaska · 1834 days ago · 7 km deep · 19 km away
  11. 1.8Southern Alaska · 1830 days ago · 4 km deep · 25 km away
  12. 1.5128 km E of McCarthy, Alaska · 1827 days ago · 0 km deep · 48 km away
  13. 2.224 km NE of McCarthy, Alaska · 1823 days ago · 7 km deep · 65 km away
  14. 1.730 km NE of McCarthy, Alaska · 1823 days ago · 3 km deep · 59 km away
  15. 2.356 km SSW of Alcan Border, Alaska · 1818 days ago · 4 km deep · 71 km away
  16. 3.652 km SSW of Alcan Border, Alaska · 1818 days ago · 9 km deep · 74 km away · felt by 1
  17. 2.254 km SSW of Alcan Border, Alaska · 1818 days ago · 11 km deep · 72 km away
  18. 1.957 km SSW of Alcan Border, Alaska · 1818 days ago · 5 km deep · 70 km away
  19. 2.155 km SSW of Alcan Border, Alaska · 1818 days ago · 9 km deep · 71 km away
  20. 1.6119 km E of McCarthy, Alaska · 1818 days ago · 0 km deep · 37 km away
  21. 1.525 km NE of McCarthy, Alaska · 1817 days ago · 10 km deep · 64 km away
  22. 1.885 km E of McCarthy, Alaska · 1814 days ago · 4 km deep · 10 km away
  23. 2.0125 km E of McCarthy, Alaska · 1814 days ago · 1 km deep · 45 km away
  24. 1.990 km E of McCarthy, Alaska · 1811 days ago · 3 km deep · 9 km away
  25. 1.689 km E of McCarthy, Alaska · 1811 days ago · 4 km deep · 8 km away
  26. 1.6150 km WNW of Haines Junction, Canada · 1804 days ago · 10 km deep · 78 km away

Before

  1. 3.486 km E of McCarthy, Alaska · 1865 days ago · 11 km deep · 6 km away
  2. 2.187 km E of McCarthy, Alaska · 1865 days ago · 4 km deep · 5 km away
  3. 2.087 km E of McCarthy, Alaska · 1865 days ago · 7 km deep · 5 km away
  4. 1.586 km E of McCarthy, Alaska · 1865 days ago · 5 km deep · 3 km away
  5. 1.589 km E of McCarthy, Alaska · 1865 days ago · 10 km deep · 6 km away
  6. 2.886 km E of McCarthy, Alaska · 1865 days ago · 4 km deep · 4 km away
  7. 4.186 km E of McCarthy, Alaska · 1865 days ago · 6 km deep · 5 km away · felt by 1
  8. 1.858 km ENE of McCarthy, Alaska · 1869 days ago · 3 km deep · 29 km away
  9. 2.098 km E of McCarthy, Alaska · 1870 days ago · 3 km deep · 15 km away
  10. 1.895 km SE of McCarthy, Alaska · 1882 days ago · 11 km deep · 87 km away
  11. 1.694 km E of McCarthy, Alaska · 1883 days ago · 0 km deep · 15 km away
  12. 1.591 km E of McCarthy, Alaska · 1884 days ago · 8 km deep · 8 km away
  13. 2.1147 km SSE of Alcan Border, Alaska · 1884 days ago · 5 km deep · 67 km away
  14. 1.849 km SW of Alcan Border, AK · 1884 days ago · 4 km deep · 84 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021apcg3wa. Read Mon, Sep 28, 2026, 4:00 AM UTC.