Alaska earthquakes

M2.8 earthquake 112 km E of Chignik, Alaska

A magnitude 2.8 earthquake struck 112 km E of Chignik, Alaska on Sun, Sep 20, 2026, 11:59 AM AKDT (19:59 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M3.2 130 km E of Chignik, 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
2.8 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2026-09-20 19:59:16 UTC
Depth
1.3 km (0.8 mi), shallow
Epicenter
56.148° N, 156.615° 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 5.0 km horizontally, 2.7 km in depth
Magnitude uncertainty
±0.20
Station coverage gap
196°, poorly surrounded by stations
Stations used
27

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 9 since this one and 45 in the 30 days before it.

After

  1. 3.176 km WSW of Akhiok, Alaska · 12 days ago · 42 km deep · 100 km away
  2. 2.9131 km E of Chignik, Alaska · 8 days ago · 9 km deep · 31 km away
  3. 2.9124 km SSE of Ugashik, Alaska · 6 days ago · 4 km deep · 51 km away
  4. 2.396 km E of Chignik, Alaska · 2 days ago · 5 km deep · 26 km away
  5. 2.1116 km ENE of Chignik, Alaska · 33 hr ago · 11 km deep · 46 km away
  6. 2.6118 km E of Chignik, Alaska · 33 hr ago · 18 km deep · 29 km away
  7. 2.5103 km SE of Ugashik, Alaska · 13 hr ago · 5 km deep · 69 km away
  8. 3.2130 km E of Chignik, Alaska · 9 hr ago · 64 km deep · 26 km away
  9. 2.191 km SSE of Ugashik, Alaska · 9 hr ago · 5 km deep · 68 km away

Before

  1. 3.655 km SE of Chignik, Alaska · 13 days ago · 34 km deep · 75 km away
  2. 2.480 km SW of Akhiok, Alaska · 13 days ago · 6 km deep · 95 km away
  3. 2.595 km SW of Akhiok, Alaska · 14 days ago · 55 km deep · 84 km away
  4. 2.186 km WSW of Akhiok, Alaska · 14 days ago · 7 km deep · 89 km away
  5. 2.092 km SE of Chignik, Alaska · 15 days ago · 7 km deep · 67 km away
  6. 1.783 km SSE of Ugashik, Alaska · 15 days ago · 74 km deep · 76 km away
  7. 1.772 km SSE of Ugashik, Alaska · 15 days ago · 6 km deep · 87 km away
  8. 2.549 km ESE of Chignik, Alaska · 15 days ago · 52 km deep · 62 km away
  9. 2.1109 km E of Chignik, Alaska · 15 days ago · 1 km deep · 4 km away
  10. 1.636 km ENE of Chignik, Alaska · 15 days ago · 75 km deep · 85 km away
  11. 2.087 km WSW of Akhiok, Alaska · 15 days ago · 62 km deep · 90 km away
  12. 2.439 km SSE of Chignik, Alaska · 16 days ago · 57 km deep · 97 km away
  13. 1.978 km SW of Akhiok, Alaska · 17 days ago · 8 km deep · 97 km away
  14. 4.0119 km E of Chignik, Alaska · 18 days ago · 18 km deep · 10 km away
  15. 2.130 km E of Chignik, Alaska · 18 days ago · 10 km deep · 82 km away
  16. 1.890 km SSE of Ugashik, Alaska · 19 days ago · 22 km deep · 71 km away
  17. 1.751 km NE of Chignik, Alaska · 20 days ago · 84 km deep · 95 km away
  18. 1.795 km SE of Ugashik, Alaska · 21 days ago · 7 km deep · 75 km away
  19. 2.071 km SSE of Chignik, Alaska · 21 days ago · 2 km deep · 86 km away
  20. 2.090 km E of Chignik, Alaska · 22 days ago · 12 km deep · 21 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event aka2026srlstj. Read Sat, Oct 3, 2026, 6:55 PM UTC.