Alaska earthquakes

M1.9 earthquake 25 km ENE of Old Harbor, Alaska

A magnitude 1.9 earthquake struck 25 km ENE of Old Harbor, Alaska on Wed, Aug 23, 2017, 4:21 AM AKDT (12:21 UTC), 20 km (12 mi) below the surface.

A larger quake followed: M2.9 69 km SE of Chiniak, Alaska. This one was a foreshock.

Womens Bay 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
1.9 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2017-08-23 12:21:24 UTC
Depth
19.9 km (12.4 mi), shallow
Epicenter
57.276° N, 152.899° 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
17

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 14 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 1.635 km NE of Larsen Bay, Alaska · 3315 days ago · 37 km deep · 69 km away
  2. 2.020 km SSE of Karluk, Alaska · 3304 days ago · 40 km deep · 84 km away
  3. 1.87 km SSE of Karluk, Alaska · 3304 days ago · 48 km deep · 94 km away
  4. 1.615 km ENE of Ouzinkie, Alaska · 3301 days ago · 9 km deep · 85 km away
  5. 1.626 km NE of Akhiok, Alaska · 3300 days ago · 30 km deep · 63 km away
  6. 1.927 km ESE of Akhiok, Alaska · 3300 days ago · 33 km deep · 68 km away
  7. 2.867 km SE of Akhiok, Alaska · 3298 days ago · 34 km deep · 100 km away
  8. 2.465 km SE of Akhiok, Alaska · 3298 days ago · 7 km deep · 92 km away
  9. 1.811 km SE of Womens Bay, Alaska · 3296 days ago · 45 km deep · 44 km away
  10. 1.717 km SSE of Larsen Bay, Alaska · 3294 days ago · 49 km deep · 60 km away
  11. 1.939 km N of Larsen Bay, Alaska · 3288 days ago · 54 km deep · 88 km away
  12. 1.611 km S of Karluk, Alaska · 3287 days ago · 64 km deep · 96 km away
  13. 1.922 km WSW of Port Lions, Alaska · 3271 days ago · 57 km deep · 65 km away
  14. 2.969 km SE of Chiniak, Alaska · 3270 days ago · 41 km deep · 94 km away

Before

  1. 1.717 km ENE of Karluk, Alaska · 3329 days ago · 47 km deep · 88 km away
  2. 2.517 km SE of Karluk, Alaska · 3332 days ago · 38 km deep · 85 km away
  3. 1.913 km S of Karluk, Alaska · 3337 days ago · 40 km deep · 94 km away
  4. 2.430 km ESE of Akhiok, Alaska · 3339 days ago · 35 km deep · 71 km away
  5. 1.818 km NE of Larsen Bay, Alaska · 3340 days ago · 39 km deep · 65 km away
  6. 1.57 km WNW of Larsen Bay, Alaska · 3344 days ago · 44 km deep · 79 km away
  7. 2.314 km NNE of Akhiok, Alaska · 3346 days ago · 19 km deep · 77 km away
  8. 1.716 km NNW of Akhiok, Alaska · 3346 days ago · 39 km deep · 85 km away
  9. 2.125 km NNW of Larsen Bay, Alaska · 3356 days ago · 46 km deep · 91 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak017asukb8n (also filed as ak16751655). Read Sat, Oct 3, 2026, 2:47 AM UTC.