Alaska earthquakes

M3.4 earthquake 192 km SE of Adak, Alaska

A magnitude 3.4 earthquake struck 192 km SE of Adak, Alaska on Tue, Jul 18, 2023, 1:40 PM HADT (22:40 UTC), 10 km (6 mi) below the surface.

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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
3.4 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-07-18 22:40:35 UTC
Depth
9.9 km (6.2 mi), shallow
Epicenter
50.466° N, 175.024° 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
3.4ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.115 · 10 stations
3.0ML, local (Richter)Alaska Earthquake CenterPreliminary

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 4.3 km horizontally, 15.8 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
254°, poorly surrounded by stations
Stations used
19

Nearby

Within 100 km, magnitude 1.5 and up: 25 in the 60 days after this one and 30 in the 30 days before it.

After

  1. 3.4207 km S of Atka, Alaska · 1169 days ago · 10 km deep · 93 km away
  2. 3.2196 km SE of Adak, Alaska · 1167 days ago · 10 km deep · 5 km away
  3. 2.3161 km S of Atka, Alaska · 1167 days ago · 6 km deep · 56 km away
  4. 3.1176 km SSE of Adak, Alaska · 1166 days ago · 10 km deep · 21 km away
  5. 2.9Andreanof Islands, Aleutian Islands, Alaska · 1163 days ago · 15 km deep · 79 km away
  6. 2.7188 km SSW of Atka, Alaska · 1162 days ago · 10 km deep · 17 km away
  7. 2.9137 km SE of Adak, Alaska · 1153 days ago · 10 km deep · 55 km away
  8. 2.6150 km SSE of Adak, Alaska · 1153 days ago · 10 km deep · 44 km away
  9. 2.5156 km S of Atka, Alaska · 1151 days ago · 10 km deep · 49 km away
  10. 2.3192 km S of Adak, Alaska · 1151 days ago · 12 km deep · 92 km away
  11. 3.0124 km SSW of Atka, Alaska · 1150 days ago · 10 km deep · 86 km away
  12. 2.6106 km SE of Adak, Alaska · 1148 days ago · 35 km deep · 88 km away
  13. 2.2154 km S of Atka, Alaska · 1148 days ago · 11 km deep · 90 km away
  14. 1.8133 km S of Atka, Alaska · 1140 days ago · 5 km deep · 84 km away
  15. 2.7Andreanof Islands, Aleutian Islands, Alaska · 1136 days ago · 10 km deep · 91 km away
  16. 2.1192 km S of Atka, Alaska · 1136 days ago · 10 km deep · 55 km away
  17. 1.9146 km SSE of Adak, Alaska · 1136 days ago · 26 km deep · 56 km away
  18. 2.8169 km S of Atka, Alaska · 1136 days ago · 10 km deep · 94 km away
  19. 2.3119 km SSW of Atka, Alaska · 1130 days ago · 36 km deep · 86 km away
  20. 2.8169 km SSE of Atka, Alaska · 1123 days ago · 10 km deep · 96 km away
  21. 2.3199 km SSE of Adak, Alaska · 1122 days ago · 5 km deep · 31 km away
  22. 2.6196 km SSE of Atka, Alaska · 1122 days ago · 10 km deep · 100 km away
  23. 2.1156 km S of Atka, Alaska · 1121 days ago · 15 km deep · 76 km away
  24. 3.3188 km S of Atka, Alaska · 1119 days ago · 10 km deep · 65 km away
  25. 2.9198 km S of Atka, Alaska · 1113 days ago · 10 km deep · 38 km away

Before

  1. 3.8197 km S of Atka, Alaska · 1173 days ago · 36 km deep · 33 km away
  2. 2.1148 km S of Atka, Alaska · 1174 days ago · 7 km deep · 95 km away
  3. 2.1155 km SE of Adak, Alaska · 1176 days ago · 5 km deep · 39 km away
  4. 2.2142 km S of Atka, Alaska · 1179 days ago · 7 km deep · 92 km away
  5. 2.1123 km SSW of Atka, Alaska · 1179 days ago · 14 km deep · 87 km away
  6. 3.7190 km S of Atka, Alaska · 1184 days ago · 10 km deep · 94 km away
  7. 2.0127 km SE of Adak, Alaska · 1184 days ago · 5 km deep · 77 km away
  8. 2.6100 km SSE of Adak, Alaska · 1186 days ago · 10 km deep · 99 km away
  9. 2.3199 km SSE of Adak, Alaska · 1187 days ago · 10 km deep · 44 km away
  10. 2.7113 km SSW of Atka, Alaska · 1189 days ago · 13 km deep · 92 km away
  11. 3.6121 km SE of Adak, Alaska · 1189 days ago · 10 km deep · 90 km away
  12. 2.4189 km SSE of Adak, Alaska · 1190 days ago · 7 km deep · 69 km away
  13. 2.5109 km SSW of Atka, Alaska · 1190 days ago · 10 km deep · 96 km away
  14. 2.0Andreanof Islands, Aleutian Islands, Alaska · 1191 days ago · 22 km deep · 56 km away
  15. 2.7128 km SSW of Atka, Alaska · 1193 days ago · 10 km deep · 76 km away
  16. 2.5124 km SSW of Atka, Alaska · 1194 days ago · 10 km deep · 80 km away
  17. 1.9117 km SSW of Atka, Alaska · 1197 days ago · 5 km deep · 88 km away
  18. 2.1123 km SSW of Atka, Alaska · 1197 days ago · 14 km deep · 81 km away
  19. 1.9129 km SSW of Atka, Alaska · 1199 days ago · 20 km deep · 74 km away
  20. 2.5136 km SSW of Atka, Alaska · 1199 days ago · 10 km deep · 66 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000kvlb (also filed as ak02395ha8vg). Read Fri, Oct 2, 2026, 2:25 AM UTC.