Alaska earthquakes

M1.7 earthquake 99 km ESE of Chignik, Alaska

A magnitude 1.7 earthquake struck 99 km ESE of Chignik, Alaska on Sat, Sep 12, 2020, 9:50 PM AKDT (05:50 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M3.5 Alaska Peninsula. 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
1.7 (ml), micro
Local time
UTC
2020-09-13 05:50:38 UTC
Depth
20.9 km (13.0 mi), shallow
Epicenter
56.040° N, 156.861° 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.

Stations used
23

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 24 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 1.8Alaska Peninsula · 2208 days ago · 61 km deep · 96 km away
  2. 1.653 km NE of Chignik, Alaska · 2207 days ago · 85 km deep · 93 km away
  3. 2.3135 km E of Chignik, Alaska · 2207 days ago · 67 km deep · 52 km away
  4. 1.777 km ENE of Chignik, Alaska · 2207 days ago · 13 km deep · 69 km away
  5. 1.772 km SSE of Chignik, Alaska · 2207 days ago · 22 km deep · 73 km away
  6. 2.1113 km E of Chignik, Alaska · 2202 days ago · 40 km deep · 34 km away
  7. 2.076 km ESE of Perryville, Alaska · 2194 days ago · 26 km deep · 86 km away
  8. 3.5Alaska Peninsula · 2187 days ago · 63 km deep · 70 km away
  9. 1.891 km SE of Ugashik, Alaska · 2186 days ago · 68 km deep · 94 km away
  10. 2.4130 km SW of Akhiok, Alaska · 2185 days ago · 70 km deep · 67 km away
  11. 2.195 km WSW of Akhiok, Alaska · 2184 days ago · 60 km deep · 98 km away
  12. 2.3104 km SE of Ugashik, Alaska · 2180 days ago · 71 km deep · 92 km away
  13. 2.259 km ENE of Chignik, Alaska · 2176 days ago · 89 km deep · 72 km away
  14. 2.2103 km E of Chignik, Alaska · 2173 days ago · 47 km deep · 21 km away
  15. 2.1121 km ENE of Chignik, Alaska · 2172 days ago · 65 km deep · 60 km away
  16. 3.2111 km E of Chignik, Alaska · 2167 days ago · 44 km deep · 34 km away
  17. 1.892 km SSE of Ugashik, Alaska · 2162 days ago · 11 km deep · 87 km away
  18. 2.9126 km SW of Akhiok, AK · 2160 days ago · 67 km deep · 75 km away
  19. 3.1120 km SSE of Ugashik, AK · 2160 days ago · 60 km deep · 72 km away
  20. 2.186 km ENE of Chignik, Alaska · 2159 days ago · 61 km deep · 72 km away
  21. 2.152 km S of Chignik, Alaska · 2157 days ago · 51 km deep · 92 km away
  22. 2.4117 km ESE of Chignik, Alaska · 2155 days ago · 34 km deep · 19 km away
  23. 1.931 km SSE of Chignik, Alaska · 2154 days ago · 64 km deep · 82 km away
  24. 2.066 km ESE of Perryville, Alaska · 2153 days ago · 25 km deep · 99 km away

Before

  1. 1.530 km ESE of Chignik, Alaska · 2208 days ago · 14 km deep · 69 km away
  2. 1.780 km SE of Perryville, Alaska · 2209 days ago · 26 km deep · 99 km away
  3. 3.784 km SSE of Ugashik, Alaska · 2216 days ago · 69 km deep · 84 km away · felt by 3
  4. 2.495 km ESE of Chignik, Alaska · 2216 days ago · 9 km deep · 7 km away
  5. 2.234 km ESE of Chignik, Alaska · 2218 days ago · 11 km deep · 66 km away
  6. 2.031 km E of Chignik, Alaska · 2225 days ago · 87 km deep · 71 km away
  7. 2.0115 km E of Chignik, Alaska · 2229 days ago · 47 km deep · 34 km away
  8. 2.074 km ENE of Chignik, Alaska · 2229 days ago · 55 km deep · 60 km away
  9. 1.627 km E of Chignik, Alaska · 2230 days ago · 9 km deep · 73 km away
  10. 2.026 km SE of Chignik, Alaska · 2230 days ago · 63 km deep · 76 km away
  11. 2.0102 km SSE of Ugashik, Alaska · 2237 days ago · 72 km deep · 83 km away
  12. 2.031 km ESE of Chignik, Alaska · 2238 days ago · 5 km deep · 69 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak020bt4e5p9. Read Wed, Sep 30, 2026, 2:46 AM UTC.