Alaska earthquakes

M1.8 earthquake 45 km ESE of Old Harbor, Alaska

A magnitude 1.8 earthquake struck 45 km ESE of Old Harbor, Alaska on Fri, Feb 23, 2018, 6:35 AM AKST (15:35 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M3.1 93 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
1.8 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2018-02-23 15:35:49 UTC
Depth
0.4 km (0.2 mi), shallow
Epicenter
57.025° N, 152.638° 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
10

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 1.819 km S of Larsen Bay, Alaska · 3132 days ago · 56 km deep · 90 km away
  2. 1.98 km NNE of Old Harbor, Alaska · 3129 days ago · 29 km deep · 47 km away
  3. 1.725 km ESE of Akhiok, Alaska · 3124 days ago · 23 km deep · 69 km away
  4. 2.126 km SW of Chiniak, Alaska · 3118 days ago · 10 km deep · 46 km away
  5. 2.097 km SE of Akhiok, Alaska · 3115 days ago · 9 km deep · 94 km away
  6. 3.193 km SSE of Akhiok, Alaska · 3110 days ago · 47 km deep · 99 km away
  7. 2.398 km SE of Akhiok, Alaska · 3110 days ago · 58 km deep · 98 km away
  8. 1.929 km NE of Old Harbor, Alaska · 3108 days ago · 25 km deep · 49 km away
  9. 1.918 km ESE of Chiniak, Alaska · 3108 days ago · 13 km deep · 71 km away
  10. 2.045 km SSE of Old Harbor, Alaska · 3102 days ago · 8 km deep · 31 km away
  11. 1.9Kodiak Island region, Alaska · 3097 days ago · 25 km deep · 43 km away
  12. 2.210 km S of Chiniak, Alaska · 3088 days ago · 17 km deep · 59 km away
  13. 2.511 km SE of Womens Bay, Alaska · 3088 days ago · 29 km deep · 65 km away

Before

  1. 1.615 km ENE of Akhiok, Alaska · 3146 days ago · 28 km deep · 78 km away
  2. 1.63 km SW of Chiniak, Alaska · 3149 days ago · 4 km deep · 65 km away
  3. 1.636 km NE of Larsen Bay, Alaska · 3153 days ago · 44 km deep · 96 km away
  4. 2.844 km E of Chiniak, Alaska · 3159 days ago · 27 km deep · 93 km away
  5. 2.819 km NW of Old Harbor, Alaska · 3163 days ago · 39 km deep · 64 km away
  6. 3.553 km SE of Old Harbor, Alaska · 3166 days ago · 15 km deep · 16 km away
  7. 3.05 km SSE of Port Lions, Alaska · 3166 days ago · 43 km deep · 89 km away
  8. 2.136 km N of Old Harbor, Alaska · 3173 days ago · 56 km deep · 69 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0182hk5ull (also filed as ak18576657). Read Sat, Oct 3, 2026, 4:49 AM UTC.