Alaska earthquakes

M1.8 earthquake 74 km SW of Unalaska, Alaska

A magnitude 1.8 earthquake struck 74 km SW of Unalaska, Alaska on Wed, Sep 23, 2026, 12:48 AM AKDT (08:48 UTC), 17 km (11 mi) below the surface.

A larger quake followed: M2.9 99 km SSW of Unalaska, Alaska. This one was a foreshock.

Unalaska forecastMore in Alaska

Map

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

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The earthquake

Magnitude
1.8 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2026-09-23 08:48:42 UTC
Depth
17.4 km (10.8 mi), shallow
Epicenter
53.402° N, 167.332° 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. If you felt it, tell the USGS: every report sharpens the shaking map.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 13.6 km horizontally, 3.8 km in depth
Magnitude uncertainty
±0.20
Station coverage gap
216°, poorly surrounded by stations
Stations used
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 10 since this one and 78 in the 30 days before it.

After

  1. 1.715 km W of Dutch Harbor, Alaska · 10 days ago · 4 km deep · 67 km away
  2. 2.572 km ESE of Nikolski, Alaska · 10 days ago · 25 km deep · 82 km away
  3. 2.457 km W of Dutch Harbor, Alaska · 9 days ago · 17 km deep · 49 km away
  4. 2.999 km SSW of Unalaska, Alaska · 8 days ago · 47 km deep · 40 km away
  5. 2.7103 km SSW of Unalaska, Alaska · 8 days ago · 26 km deep · 51 km away
  6. 2.135 km SW of Unalaska, Alaska · 8 days ago · 79 km deep · 39 km away
  7. 2.490 km SSW of Unalaska, Alaska · 5 days ago · 23 km deep · 50 km away
  8. 2.274 km SW of Unalaska, Alaska · 5 days ago · 11 km deep · 5 km away
  9. 2.17 km NNW of Dutch Harbor, Alaska · 5 days ago · 15 km deep · 78 km away
  10. 2.06 km NNW of Dutch Harbor, Alaska · 5 days ago · 15 km deep · 78 km away

Before

  1. 2.117 km W of Dutch Harbor, Alaska · 10 days ago · 8 km deep · 65 km away
  2. 2.395 km SSW of Unalaska, Alaska · 11 days ago · 26 km deep · 47 km away
  3. 1.540 km NE of Nikolski, Alaska · 11 days ago · 38 km deep · 79 km away
  4. 1.956 km SSW of Unalaska, Alaska · 11 days ago · 16 km deep · 24 km away
  5. 1.642 km NE of Nikolski, Alaska · 11 days ago · 99 km deep · 78 km away
  6. 2.375 km ESE of Nikolski, Alaska · 11 days ago · 28 km deep · 72 km away
  7. 2.518 km WSW of Dutch Harbor, Alaska · 12 days ago · 10 km deep · 60 km away
  8. 2.9112 km E of Nikolski, Alaska · 12 days ago · 6 km deep · 68 km away
  9. 2.374 km E of Nikolski, Alaska · 12 days ago · 55 km deep · 63 km away
  10. 1.88 km S of Unalaska, Alaska · 13 days ago · 12 km deep · 68 km away
  11. 2.459 km SE of Unalaska, Alaska · 13 days ago · 53 km deep · 94 km away
  12. 2.787 km E of Nikolski, Alaska · 14 days ago · 41 km deep · 65 km away
  13. 2.08 km W of Dutch Harbor, Alaska · 15 days ago · 11 km deep · 71 km away
  14. 2.472 km ESE of Nikolski, Alaska · 15 days ago · 38 km deep · 86 km away
  15. 2.282 km SW of Unalaska, Alaska · 15 days ago · 19 km deep · 12 km away
  16. 2.177 km SW of Unalaska, Alaska · 17 days ago · 12 km deep · 13 km away
  17. 3.695 km SSW of Unalaska, Alaska · 17 days ago · 20 km deep · 43 km away
  18. 2.952 km SSW of Unalaska, Alaska · 18 days ago · 70 km deep · 31 km away
  19. 2.592 km E of Nikolski, Alaska · 18 days ago · 3 km deep · 67 km away
  20. 4.092 km SSW of Unalaska, Alaska · 18 days ago · 18 km deep · 39 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event aka2026swdlas. Read Sat, Oct 3, 2026, 3:20 PM UTC.