Alaska earthquakes

M2.3 earthquake 198 km SSE of Old Harbor, Alaska

A magnitude 2.3 earthquake struck 198 km SSE of Old Harbor, Alaska on Wed, Jul 18, 2018, 6:07 AM AKDT (14:07 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M3.0 278 km SSE of Akhiok, 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
2.3 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2018-07-18 14:07:56 UTC
Depth
12.0 km (7.5 mi), shallow
Epicenter
55.645° N, 151.727° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
2.3ML, local (Richter)Alaska Earthquake CenterPreferred · Preliminary
2.3ML, local (Richter)AACSEPreliminary

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
36

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 18 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 1.7162 km SSE of Old Harbor, Alaska · 2998 days ago · 11 km deep · 36 km away
  2. 2.4238 km SSE of Old Harbor, Alaska · 2989 days ago · 5 km deep · 44 km away
  3. 2.5233 km SSE of Akhiok, Alaska · 2987 days ago · 12 km deep · 92 km away
  4. 2.2119 km SE of Old Harbor, Alaska · 2979 days ago · 25 km deep · 81 km away
  5. 2.8246 km SE of Old Harbor, Alaska · 2972 days ago · 40 km deep · 61 km away
  6. 1.9259 km SE of Old Harbor, Alaska · 2968 days ago · 5 km deep · 76 km away
  7. 3.0278 km SSE of Akhiok, Alaska · 2966 days ago · 14 km deep · 88 km away
  8. 2.4206 km SSE of Chiniak, Alaska · 2964 days ago · 8 km deep · 89 km away
  9. 2.8217 km SSE of Chiniak, Alaska · 2960 days ago · 10 km deep · 95 km away
  10. 2.5239 km SSE of Chiniak, Alaska · 2959 days ago · 13 km deep · 96 km away
  11. 2.2132 km SSE of Akhiok, Alaska · 2958 days ago · 36 km deep · 93 km away
  12. 2.4137 km SSE of Akhiok, Alaska · 2958 days ago · 44 km deep · 86 km away
  13. 2.4131 km SSE of Akhiok, Alaska · 2958 days ago · 37 km deep · 96 km away
  14. 2.9229 km SSE of Chiniak, Alaska · 2955 days ago · 4 km deep · 80 km away
  15. 2.9211 km SSE of Old Harbor, Alaska · 2953 days ago · 10 km deep · 17 km away
  16. 2.3129 km SSE of Akhiok, Alaska · 2943 days ago · 33 km deep · 95 km away
  17. 2.3138 km SSE of Akhiok, Alaska · 2943 days ago · 30 km deep · 86 km away
  18. 2.2131 km SSE of Akhiok, Alaska · 2943 days ago · 34 km deep · 95 km away

Before

  1. 2.5202 km SSE of Old Harbor, Alaska · 3004 days ago · 7 km deep · 10 km away
  2. 3.0195 km SSE of Old Harbor, Alaska · 3008 days ago · 10 km deep · 7 km away
  3. 2.7217 km SSE of Chiniak, Alaska · 3013 days ago · 9 km deep · 68 km away
  4. 2.9248 km SE of Old Harbor, Alaska · 3014 days ago · 5 km deep · 68 km away
  5. 2.5240 km SSE of Chiniak, Alaska · 3024 days ago · 6 km deep · 93 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak01895cbr3q (also filed as ak19967375, aacse01895cbr3q). Read Fri, Oct 2, 2026, 4:30 PM UTC.