Alaska earthquakes

M4.0 earthquake 77 km NNW of False Pass, Alaska

A magnitude 4.0 earthquake struck 77 km NNW of False Pass, Alaska on Sun, Oct 20, 2024, 10:43 AM AKDT (18:43 UTC), 208 km (129 mi) below the surface.

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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
4.0 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2024-10-20 18:43:05 UTC
Depth
208.3 km (129.5 mi), intermediate-depth
Epicenter
55.475° N, 163.955° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
4.0mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · ±0.195 · 8 stations
3.5ML, local (Richter)Alaska Earthquake CenterPreliminary

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 11.1 km horizontally, 9.7 km in depth
Magnitude uncertainty
±0.20
Depth from
From location
Station coverage gap
131°
Stations used
52

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 18 in the 60 days after this one and 14 in the 30 days before it.

After

  1. 2.910 km SSW of False Pass, Alaska · 710 days ago · 126 km deep · 84 km away
  2. 3.1105 km NW of Cold Bay, Alaska · 704 days ago · 172 km deep · 31 km away
  3. 2.316 km S of False Pass, Alaska · 697 days ago · 94 km deep · 92 km away
  4. 2.168 km WSW of False Pass, Alaska · 696 days ago · 5 km deep · 93 km away
  5. 1.630 km WSW of False Pass, Alaska · 688 days ago · 37 km deep · 82 km away
  6. 3.026 km NNW of False Pass, Alaska · 684 days ago · 118 km deep · 51 km away
  7. 2.08 km SSE of False Pass, Alaska · 681 days ago · 92 km deep · 86 km away
  8. 2.124 km E of False Pass, Alaska · 678 days ago · 95 km deep · 94 km away
  9. 2.948 km WSW of False Pass, Alaska · 674 days ago · 140 km deep · 86 km away
  10. 2.028 km SW of False Pass, Alaska · 671 days ago · 6 km deep · 92 km away
  11. 2.029 km SSW of Cold Bay, Alaska · 669 days ago · 120 km deep · 93 km away
  12. 2.514 km SSW of Cold Bay, Alaska · 665 days ago · 113 km deep · 85 km away
  13. 1.627 km NE of False Pass, Alaska · 664 days ago · 85 km deep · 78 km away
  14. 2.524 km NE of Cold Bay, Alaska · 663 days ago · 145 km deep · 94 km away
  15. 2.222 km SSE of False Pass, Alaska · 662 days ago · 13 km deep · 99 km away
  16. 2.026 km NW of Cold Bay, Alaska · 658 days ago · 44 km deep · 59 km away
  17. 2.322 km S of Cold Bay, Alaska · 655 days ago · 117 km deep · 92 km away
  18. 1.933 km SW of False Pass, Alaska · 652 days ago · 8 km deep · 94 km away

Before

  1. 4.315 km WNW of False Pass, Alaska · 714 days ago · 95 km deep · 65 km away
  2. 2.617 km NNE of False Pass, Alaska · 718 days ago · 142 km deep · 70 km away
  3. 1.542 km SW of False Pass, Alaska · 721 days ago · 13 km deep · 97 km away
  4. 2.24 km N of False Pass, Alaska · 729 days ago · 99 km deep · 74 km away
  5. 2.623 km NE of False Pass, Alaska · 730 days ago · 175 km deep · 77 km away
  6. 2.220 km SSE of False Pass, Alaska · 733 days ago · 77 km deep · 97 km away
  7. 2.912 km SSW of False Pass, Alaska · 733 days ago · 10 km deep · 86 km away
  8. 2.79 km S of False Pass, Alaska · 735 days ago · 108 km deep · 86 km away
  9. 2.928 km W of Cold Bay, Alaska · 737 days ago · 170 km deep · 63 km away
  10. 1.747 km WSW of False Pass, Alaska · 738 days ago · 12 km deep · 85 km away
  11. 1.641 km W of False Pass, Alaska · 740 days ago · 15 km deep · 73 km away
  12. 1.646 km WSW of False Pass, Alaska · 740 days ago · 3 km deep · 82 km away
  13. 2.047 km WSW of False Pass, Alaska · 740 days ago · 6 km deep · 82 km away
  14. 2.21 km SW of Cold Bay, Alaska · 741 days ago · 155 km deep · 84 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000nzwy (also filed as ak024diiz263). Read Fri, Oct 2, 2026, 1:53 PM UTC.