Alaska earthquakes

M3.1 earthquake 99 km WNW of False Pass, Alaska

A magnitude 3.1 earthquake struck 99 km WNW of False Pass, Alaska on Tue, Nov 30, 2021, 3:34 AM AKST (12:34 UTC), 177 km (110 mi) below the surface.

A larger quake followed: M3.3 45 km W of False Pass, 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
3.1 (ml), minor
Local time
UTC
2021-11-30 12:34:07 UTC
Depth
177.1 km (110.0 mi), intermediate-depth
Epicenter
55.249° N, 164.810° 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.

Location uncertainty
About 10.8 km horizontally, 12.6 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
205°, poorly surrounded by stations
Stations used
36

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 2.254 km ENE of Akutan, Alaska · 1742 days ago · 115 km deep · 97 km away
  2. 2.726 km WNW of False Pass, Alaska · 1741 days ago · 172 km deep · 73 km away
  3. 3.345 km W of False Pass, Alaska · 1741 days ago · 10 km deep · 67 km away
  4. 3.588 km NW of False Pass, Alaska · 1733 days ago · 243 km deep · 49 km away
  5. 2.073 km WSW of False Pass, Alaska · 1720 days ago · 7 km deep · 77 km away
  6. 1.974 km WSW of False Pass, Alaska · 1720 days ago · 6 km deep · 77 km away
  7. 2.7105 km WNW of False Pass, Alaska · 1715 days ago · 179 km deep · 6 km away
  8. 2.846 km W of False Pass, Alaska · 1715 days ago · 10 km deep · 63 km away
  9. 3.088 km NE of Akutan, Alaska · 1709 days ago · 196 km deep · 60 km away
  10. 2.9Unimak Island region, Alaska · 1708 days ago · 187 km deep · 67 km away
  11. 2.265 km N of Akutan, Alaska · 1699 days ago · 122 km deep · 84 km away

Before

  1. 1.872 km WSW of False Pass, Alaska · 1764 days ago · 7 km deep · 83 km away
  2. 2.671 km NNE of Akutan, Alaska · 1769 days ago · 116 km deep · 72 km away
  3. 1.67 km SW of False Pass, Alaska · 1775 days ago · 13 km deep · 96 km away
  4. 1.786 km ENE of Akutan, Alaska · 1784 days ago · 15 km deep · 79 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000g8sx (also filed as ak021fckufzk). Read Wed, Sep 23, 2026, 8:27 AM UTC.