Alaska earthquakes

M3.6 earthquake 166 km SSW of Adak, Alaska

A magnitude 3.6 earthquake struck 166 km SSW of Adak, Alaska on Mon, Sep 9, 2019, 3:58 PM HADT (00:58 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.3 241 km SSW of Adak, 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
3.6 (mb, body-wave), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2019-09-10 00:58:57 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
50.434° N, 177.299° 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
3.6mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · ±0.1 · 25 stations
3.3ML, 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 4.4 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.10
Depth from
Operator assigned
Station coverage gap
236°, poorly surrounded by stations
Stations used
55

Nearby

Within 100 km, magnitude 1.5 and up: 28 in the 60 days after this one and 25 in the 30 days before it.

After

  1. 1.6160 km SSW of Adak, Alaska · 2579 days ago · 25 km deep · 13 km away
  2. 1.7166 km SSW of Adak, Alaska · 2579 days ago · 48 km deep · 13 km away
  3. 2.1128 km SW of Adak, Alaska · 2578 days ago · 26 km deep · 99 km away
  4. 2.4104 km SW of Adak, Alaska · 2577 days ago · 39 km deep · 93 km away
  5. 2.0110 km SW of Adak, Alaska · 2570 days ago · 26 km deep · 95 km away
  6. 2.699 km SW of Adak, Alaska · 2570 days ago · 35 km deep · 97 km away
  7. 1.7134 km SW of Adak, Alaska · 2565 days ago · 27 km deep · 91 km away
  8. 1.671 km SSW of Adak, Alaska · 2559 days ago · 30 km deep · 97 km away
  9. 2.4113 km SW of Adak, Alaska · 2555 days ago · 20 km deep · 88 km away
  10. 2.1104 km SW of Adak, Alaska · 2554 days ago · 33 km deep · 84 km away
  11. 2.1212 km SSW of Adak, Alaska · 2554 days ago · 37 km deep · 72 km away
  12. 1.690 km S of Adak, Alaska · 2553 days ago · 37 km deep · 94 km away
  13. 2.384 km S of Adak, Alaska · 2551 days ago · 25 km deep · 92 km away
  14. 1.9139 km SW of Adak, Alaska · 2551 days ago · 18 km deep · 84 km away
  15. 1.685 km SW of Adak, Alaska · 2550 days ago · 30 km deep · 99 km away
  16. 2.986 km SW of Adak, Alaska · 2546 days ago · 31 km deep · 95 km away
  17. 2.5196 km S of Adak, Alaska · 2546 days ago · 10 km deep · 53 km away
  18. 1.5107 km SW of Adak, Alaska · 2545 days ago · 13 km deep · 91 km away
  19. 4.3241 km SSW of Adak, Alaska · 2544 days ago · 10 km deep · 86 km away
  20. 3.0132 km SW of Adak, Alaska · 2542 days ago · 27 km deep · 99 km away
  21. 1.6125 km SW of Adak, Alaska · 2539 days ago · 27 km deep · 98 km away
  22. 2.1140 km SW of Adak, Alaska · 2538 days ago · 13 km deep · 88 km away
  23. 2.1136 km S of Adak, Alaska · 2529 days ago · 31 km deep · 52 km away
  24. 2.2134 km SW of Adak, Alaska · 2529 days ago · 26 km deep · 99 km away
  25. 2.8120 km SW of Adak, Alaska · 2524 days ago · 29 km deep · 98 km away
  26. 1.5116 km SW of Adak, Alaska · 2524 days ago · 27 km deep · 97 km away
  27. 2.2175 km SSE of Adak, Alaska · 2521 days ago · 8 km deep · 90 km away
  28. 2.070 km SSW of Adak, Alaska · 2521 days ago · 26 km deep · 98 km away

Before

  1. 2.2198 km S of Adak, Alaska · 2579 days ago · 10 km deep · 38 km away
  2. 1.8186 km S of Adak, Alaska · 2579 days ago · 12 km deep · 27 km away
  3. 5.4166 km SSW of Adak, Alaska · 2579 days ago · 10 km deep · 9 km away · felt by 1 · tsunami flag
  4. 2.0129 km SW of Adak, Alaska · 2580 days ago · 21 km deep · 99 km away
  5. 1.8112 km SW of Adak, Alaska · 2580 days ago · 25 km deep · 79 km away
  6. 3.0245 km SSW of Adak, Alaska · 2581 days ago · 35 km deep · 85 km away
  7. 1.5126 km SW of Adak, Alaska · 2582 days ago · 13 km deep · 94 km away
  8. 1.6151 km SW of Adak, Alaska · 2585 days ago · 26 km deep · 94 km away
  9. 1.9125 km SW of Adak, Alaska · 2589 days ago · 40 km deep · 62 km away
  10. 1.898 km S of Adak, Alaska · 2590 days ago · 42 km deep · 72 km away
  11. 2.6136 km SSW of Adak, Alaska · 2590 days ago · 10 km deep · 54 km away
  12. 2.5136 km SSW of Adak, Alaska · 2590 days ago · 10 km deep · 49 km away
  13. 1.569 km SSW of Adak, Alaska · 2590 days ago · 26 km deep · 98 km away
  14. 2.6133 km SW of Adak, Alaska · 2593 days ago · 29 km deep · 97 km away
  15. 1.9133 km SW of Adak, Alaska · 2593 days ago · 26 km deep · 100 km away
  16. 1.9127 km SW of Adak, Alaska · 2594 days ago · 28 km deep · 99 km away
  17. 1.869 km SSW of Adak, Alaska · 2596 days ago · 29 km deep · 99 km away
  18. 1.6105 km SW of Adak, Alaska · 2597 days ago · 36 km deep · 78 km away
  19. 2.1175 km S of Adak, Alaska · 2597 days ago · 23 km deep · 42 km away
  20. 1.9109 km SW of Adak, Alaska · 2598 days ago · 27 km deep · 92 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us60005l7q (also filed as ak019bmfbcxt). Read Thu, Oct 1, 2026, 8:09 PM UTC.