Alaska earthquakes

M2.3 earthquake 163 km SE of Chignik, Alaska

A magnitude 2.3 earthquake struck 163 km SE of Chignik, Alaska on Mon, Sep 11, 2017, 1:39 PM AKDT (21:39 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M4.9 247 km SE of Chignik, 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
2.3 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2017-09-11 21:39:02 UTC
Depth
12.0 km (7.5 mi), shallow
Epicenter
55.123° N, 156.828° 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
16

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 4.6147 km SE of Chignik, Alaska · 3308 days ago · 8 km deep · 17 km away
  2. 4.1149 km SSE of Chignik, Alaska · 3308 days ago · 23 km deep · 18 km away
  3. 3.495 km ESE of Chignik, Alaska · 3305 days ago · 45 km deep · 98 km away
  4. 3.2215 km SE of Perryville, Alaska · 3286 days ago · 12 km deep · 67 km away
  5. 4.0south of Alaska · 3284 days ago · 12 km deep · 74 km away
  6. 4.0215 km SE of Perryville, Alaska · 3284 days ago · 10 km deep · 65 km away
  7. 4.9247 km SE of Chignik, Alaska · 3279 days ago · 3 km deep · 84 km away · felt by 1
  8. 2.170 km SE of Chignik, Alaska · 3258 days ago · 16 km deep · 96 km away

Before

  1. 4.4149 km SSE of Chignik, Alaska · 3311 days ago · 37 km deep · 19 km away
  2. 2.375 km SE of Perryville, Alaska · 3311 days ago · 19 km deep · 97 km away
  3. 2.293 km SE of Chignik, Alaska · 3311 days ago · 22 km deep · 72 km away
  4. 2.199 km SSE of Perryville, Alaska · 3331 days ago · 32 km deep · 99 km away
  5. 4.1154 km SE of Chignik, Alaska · 3332 days ago · 37 km deep · 14 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak017bof8m9h (also filed as ak16827357). Read Sat, Oct 3, 2026, 12:43 PM UTC.