Alaska earthquakes

M3.5 earthquake 24 km SW of Nelson Lagoon, Alaska

A magnitude 3.5 earthquake struck 24 km SW of Nelson Lagoon, Alaska on Sun, Oct 21, 2018, 3:44 PM AKDT (23:44 UTC), 166 km (103 mi) below the surface.

A larger quake followed: M4.1 42 km NW of Nelson Lagoon, 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
3.5 (ML, local (Richter)), minor
Magnitude from
AACSE
Local time
UTC
2018-10-21 23:44:00 UTC
Depth
165.5 km (102.8 mi), intermediate-depth
Epicenter
55.840° N, 161.483° 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
123

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 3.219 km WNW of Nelson Lagoon, Alaska · 2896 days ago · 206 km deep · 24 km away
  2. 3.051 km W of Nelson Lagoon, Alaska · 2892 days ago · 204 km deep · 39 km away
  3. 2.141 km SW of Sand Point, Alaska · 2884 days ago · 58 km deep · 85 km away
  4. 2.223 km N of Cold Bay, Alaska · 2884 days ago · 110 km deep · 94 km away
  5. 1.920 km SSW of Sand Point, Alaska · 2877 days ago · 54 km deep · 89 km away
  6. 3.318 km NW of Sand Point, Alaska · 2870 days ago · 79 km deep · 65 km away
  7. 3.127 km NNW of Nelson Lagoon, Alaska · 2868 days ago · 204 km deep · 42 km away
  8. 2.838 km SW of Sand Point, Alaska · 2865 days ago · 64 km deep · 88 km away
  9. 4.142 km NW of Nelson Lagoon, Alaska · 2858 days ago · 210 km deep · 46 km away
  10. 2.312 km WSW of Sand Point, Alaska · 2858 days ago · 48 km deep · 79 km away
  11. 3.142 km NNW of Nelson Lagoon, Alaska · 2855 days ago · 211 km deep · 56 km away

Before

  1. 2.946 km SE of Nelson Lagoon, Alaska · 2908 days ago · 139 km deep · 56 km away
  2. 1.762 km NE of King Cove, Alaska · 2909 days ago · 7 km deep · 43 km away
  3. 1.513 km NE of King Cove, Alaska · 2910 days ago · 9 km deep · 88 km away
  4. 1.914 km NNE of King Cove, Alaska · 2910 days ago · 7 km deep · 87 km away
  5. 3.730 km NW of Nelson Lagoon, Alaska · 2911 days ago · 202 km deep · 40 km away
  6. 3.954 km SW of Nelson Lagoon, Alaska · 2920 days ago · 168 km deep · 30 km away
  7. 2.634 km SW of Nelson Lagoon, Alaska · 2926 days ago · 170 km deep · 11 km away
  8. 1.543 km ENE of King Cove, Alaska · 2928 days ago · 78 km deep · 71 km away
  9. 1.925 km W of Ivanof Bay, Alaska · 2930 days ago · 110 km deep · 99 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event aacse018dilyflt. Read Thu, Oct 1, 2026, 6:21 AM UTC.