Alaska earthquakes

M4.2 earthquake 214 km SE of Chiniak, Alaska

A magnitude 4.2 earthquake struck 214 km SE of Chiniak, Alaska on Thu, Aug 3, 2023, 9:50 PM AKDT (05:50 UTC), 10 km (6 mi) below the surface.

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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
4.2 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-08-04 05:50:21 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
56.146° N, 149.997° 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
4.2mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · ±0.136 · 15 stations
4.2mb, body-waveAlaska 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 1.4 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.14
Depth from
Operator assigned
Station coverage gap
141°
Stations used
155

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 8 in the 30 days before it.

After

  1. 2.7203 km SE of Chiniak, Alaska · 1154 days ago · 10 km deep · 13 km away
  2. 3.1256 km ESE of Chiniak, Alaska · 1150 days ago · 10 km deep · 96 km away
  3. 3.1232 km SE of Chiniak, Alaska · 1149 days ago · 10 km deep · 57 km away
  4. 3.2244 km SE of Chiniak, Alaska · 1145 days ago · 10 km deep · 54 km away
  5. 2.8209 km SE of Chiniak, Alaska · 1145 days ago · 10 km deep · 23 km away
  6. 3.3218 km SE of Chiniak, Alaska · 1140 days ago · 14 km deep · 7 km away
  7. 2.7242 km SE of Chiniak, Alaska · 1138 days ago · 10 km deep · 44 km away
  8. 2.5284 km SE of Chiniak, Alaska · 1137 days ago · 10 km deep · 72 km away
  9. 2.5254 km ESE of Chiniak, Alaska · 1135 days ago · 10 km deep · 99 km away
  10. 3.3267 km ESE of Chiniak, Alaska · 1135 days ago · 10 km deep · 93 km away
  11. 2.7226 km SE of Chiniak, Alaska · 1132 days ago · 10 km deep · 53 km away
  12. 2.9239 km SE of Chiniak, Alaska · 1129 days ago · 10 km deep · 51 km away
  13. 2.5254 km SE of Chiniak, Alaska · 1122 days ago · 19 km deep · 72 km away
  14. 3.7218 km SE of Chiniak, Alaska · 1122 days ago · 10 km deep · 63 km away
  15. 2.9220 km ESE of Chiniak, Alaska · 1111 days ago · 10 km deep · 70 km away
  16. 2.9250 km SE of Chiniak, Alaska · 1109 days ago · 10 km deep · 47 km away
  17. 2.6221 km SE of Chiniak, Alaska · 1105 days ago · 10 km deep · 52 km away
  18. 2.5267 km ESE of Chiniak, Alaska · 1102 days ago · 10 km deep · 100 km away

Before

  1. 3.0Gulf of Alaska · 1155 days ago · 12 km deep · 82 km away
  2. 3.7Gulf of Alaska · 1155 days ago · 10 km deep · 86 km away
  3. 3.0248 km SE of Chiniak, Alaska · 1157 days ago · 10 km deep · 52 km away
  4. 2.2247 km ESE of Chiniak, Alaska · 1167 days ago · 12 km deep · 96 km away
  5. 2.8234 km SE of Chiniak, Alaska · 1171 days ago · 10 km deep · 61 km away
  6. 2.8243 km SE of Chiniak, Alaska · 1174 days ago · 10 km deep · 41 km away
  7. 2.9251 km SE of Chiniak, Alaska · 1174 days ago · 10 km deep · 47 km away
  8. 2.9240 km SE of Chiniak, Alaska · 1179 days ago · 10 km deep · 50 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000kxr6 (also filed as ak0239xbcw93). Read Thu, Oct 1, 2026, 5:31 AM UTC.