Alaska earthquakes

M3.0 earthquake 191 km SW of Nikolski, Alaska

A magnitude 3.0 earthquake struck 191 km SW of Nikolski, Alaska on Fri, Oct 1, 2021, 11:02 PM HADT (08:02 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M4.5 184 km WSW of Nikolski, Alaska. This one was a foreshock.

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

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The earthquake

Magnitude
3.0 (ML, local (Richter)), minor
Magnitude from
Alaska Earthquake Center
Local time
UTC
2021-10-02 08:02:05 UTC
Depth
1.8 km (1.1 mi), shallow
Epicenter
51.895° N, 171.109° 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
24

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 4.5184 km WSW of Nikolski, Alaska · 1824 days ago · 46 km deep · 24 km away
  2. 3.1126 km WSW of Nikolski, Alaska · 1821 days ago · 123 km deep · 68 km away
  3. 2.8Fox Islands, Aleutian Islands, Alaska · 1820 days ago · 20 km deep · 8 km away
  4. 3.4180 km WSW of Nikolski, Alaska · 1809 days ago · 21 km deep · 24 km away
  5. 3.9Fox Islands, Aleutian Islands, Alaska · 1809 days ago · 46 km deep · 86 km away
  6. 2.9125 km SW of Nikolski, Alaska · 1801 days ago · 24 km deep · 67 km away
  7. 3.0143 km SW of Nikolski, Alaska · 1800 days ago · 17 km deep · 48 km away
  8. 2.5136 km SW of Nikolski, Alaska · 1796 days ago · 19 km deep · 62 km away
  9. 3.2185 km E of Atka, Alaska · 1792 days ago · 7 km deep · 61 km away
  10. 3.6155 km SW of Nikolski, Alaska · 1788 days ago · 35 km deep · 41 km away
  11. 2.8174 km WSW of Nikolski, Alaska · 1780 days ago · 56 km deep · 35 km away

Before

  1. 4.8190 km SW of Nikolski, Alaska · 1826 days ago · 35 km deep · 6 km away
  2. 5.2185 km SW of Nikolski, Alaska · 1826 days ago · 35 km deep · 10 km away · felt by 3
  3. 3.9191 km ESE of Atka, Alaska · 1829 days ago · 44 km deep · 28 km away
  4. 3.7198 km SW of Nikolski, Alaska · 1832 days ago · 43 km deep · 21 km away
  5. 3.1113 km SW of Nikolski, Alaska · 1836 days ago · 35 km deep · 84 km away
  6. 3.0140 km E of Atka, Alaska · 1849 days ago · 59 km deep · 76 km away
  7. 2.6139 km WSW of Nikolski, Alaska · 1849 days ago · 88 km deep · 85 km away
  8. 3.3112 km SW of Nikolski, Alaska · 1852 days ago · 35 km deep · 84 km away
  9. 2.4152 km WSW of Nikolski, Alaska · 1854 days ago · 60 km deep · 56 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021cmxkch5. Read Thu, Oct 1, 2026, 4:26 AM UTC.