Alaska earthquakes

M2.9 earthquake 122 km W of Nikolski, Alaska

A magnitude 2.9 earthquake struck 122 km W of Nikolski, Alaska on Thu, Nov 18, 2021, 4:43 PM HAST (02:43 UTC), 134 km (83 mi) below the surface.

A larger quake followed: M4.8 171 km W of Nikolski, 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
2.9 (ml), micro
Local time
UTC
2021-11-19 02:43:08 UTC
Depth
134.3 km (83.5 mi), intermediate-depth
Epicenter
52.974° N, 170.688° 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
21

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 2.249 km SW of Nikolski, Alaska · 1774 days ago · 10 km deep · 94 km away
  2. 3.1158 km WSW of Nikolski, Alaska · 1755 days ago · 123 km deep · 59 km away
  3. 3.1170 km WSW of Nikolski, Alaska · 1753 days ago · 17 km deep · 80 km away
  4. 3.154 km SW of Nikolski, Alaska · 1751 days ago · 35 km deep · 94 km away
  5. 3.299 km SW of Nikolski, Alaska · 1748 days ago · 10 km deep · 77 km away
  6. 4.271 km SW of Nikolski, Alaska · 1735 days ago · 35 km deep · 92 km away
  7. 2.6Fox Islands, Aleutian Islands, Alaska · 1729 days ago · 35 km deep · 62 km away
  8. 3.160 km WNW of Nikolski, Alaska · 1725 days ago · 131 km deep · 65 km away
  9. 4.8171 km W of Nikolski, Alaska · 1721 days ago · 122 km deep · 49 km away
  10. 3.083 km WNW of Nikolski, Alaska · 1720 days ago · 168 km deep · 55 km away
  11. 2.693 km SW of Nikolski, Alaska · 1720 days ago · 68 km deep · 79 km away
  12. 2.384 km SW of Nikolski, Alaska · 1720 days ago · 45 km deep · 81 km away
  13. 3.628 km WSW of Nikolski, Alaska · 1719 days ago · 98 km deep · 99 km away
  14. 3.9133 km SW of Nikolski, Alaska · 1718 days ago · 35 km deep · 88 km away
  15. 4.0149 km WSW of Nikolski, Alaska · 1717 days ago · 54 km deep · 79 km away
  16. 3.2131 km SW of Nikolski, Alaska · 1716 days ago · 35 km deep · 92 km away
  17. 3.0133 km SW of Nikolski, Alaska · 1716 days ago · 35 km deep · 85 km away

Before

  1. 2.556 km W of Nikolski, Alaska · 1775 days ago · 85 km deep · 66 km away
  2. 2.083 km SW of Nikolski, Alaska · 1776 days ago · 18 km deep · 89 km away
  3. 2.8174 km WSW of Nikolski, Alaska · 1778 days ago · 56 km deep · 90 km away
  4. 1.739 km WSW of Nikolski, Alaska · 1780 days ago · 5 km deep · 85 km away
  5. 3.167 km SW of Nikolski, Alaska · 1781 days ago · 31 km deep · 96 km away
  6. 3.2185 km E of Atka, Alaska · 1789 days ago · 7 km deep · 85 km away
  7. 3.8179 km WNW of Nikolski, Alaska · 1797 days ago · 253 km deep · 77 km away
  8. 3.0143 km SW of Nikolski, Alaska · 1798 days ago · 17 km deep · 90 km away
  9. 2.9125 km SW of Nikolski, Alaska · 1799 days ago · 24 km deep · 87 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021eu817ac. Read Mon, Sep 28, 2026, 9:35 PM UTC.