Alaska earthquakes

M4.0 earthquake 23 km NE of Atka, Alaska

A magnitude 4.0 earthquake struck 23 km NE of Atka, Alaska on Thu, Feb 16, 2023, 3:47 PM HAST (01:47 UTC), 164 km (102 mi) below the surface.

A larger quake followed: M4.3 65 km NNW of Atka, Alaska. This one was a foreshock.

More in Alaska

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
4.0 (mb), light
Local time
UTC
2023-02-17 01:47:27 UTC
Depth
163.9 km (101.8 mi), intermediate-depth
Epicenter
52.362° N, 173.978° 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.

Location uncertainty
About 13.2 km horizontally, 3.7 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
132°
Stations used
19

Nearby

Within 100 km, magnitude 1.5 and up: 45 in the 60 days after this one and 15 in the 30 days before it.

After

  1. 2.56 km N of Atka, Alaska · 1321 days ago · 170 km deep · 19 km away
  2. 4.365 km NNW of Atka, Alaska · 1321 days ago · 216 km deep · 56 km away
  3. 3.249 km ENE of Atka, Alaska · 1320 days ago · 182 km deep · 28 km away
  4. 3.045 km S of Atka, Alaska · 1320 days ago · 35 km deep · 65 km away
  5. 3.928 km WNW of Atka, Alaska · 1319 days ago · 215 km deep · 39 km away
  6. 4.0Andreanof Islands, Aleutian Islands, Alaska · 1317 days ago · 44 km deep · 87 km away
  7. 2.7Andreanof Islands, Aleutian Islands, Alaska · 1316 days ago · 20 km deep · 53 km away
  8. 3.030 km S of Atka, Alaska · 1315 days ago · 150 km deep · 50 km away
  9. 3.272 km SW of Atka, Alaska · 1315 days ago · 35 km deep · 96 km away
  10. 3.843 km SE of Atka, Alaska · 1313 days ago · 35 km deep · 55 km away
  11. 4.0108 km E of Atka, Alaska · 1313 days ago · 10 km deep · 95 km away
  12. 3.048 km S of Atka, Alaska · 1312 days ago · 35 km deep · 70 km away
  13. 2.859 km SW of Atka, Alaska · 1310 days ago · 35 km deep · 83 km away
  14. 4.270 km SSE of Atka, Alaska · 1307 days ago · 57 km deep · 84 km away
  15. 2.953 km SSE of Atka, Alaska · 1306 days ago · 35 km deep · 69 km away
  16. 2.867 km SSW of Atka, Alaska · 1305 days ago · 35 km deep · 91 km away
  17. 3.557 km SSW of Atka, Alaska · 1303 days ago · 35 km deep · 82 km away
  18. 3.364 km SSE of Atka, Alaska · 1303 days ago · 29 km deep · 75 km away
  19. 2.74 km SSE of Atka, Alaska · 1300 days ago · 115 km deep · 27 km away
  20. 1.717 km SW of Atka, Alaska · 1297 days ago · 7 km deep · 41 km away
  21. 2.660 km SE of Atka, Alaska · 1294 days ago · 35 km deep · 70 km away
  22. 2.917 km NE of Atka, Alaska · 1292 days ago · 152 km deep · 6 km away
  23. 2.3Andreanof Islands, Aleutian Islands, Alaska · 1288 days ago · 11 km deep · 90 km away
  24. 3.139 km NNW of Atka, Alaska · 1283 days ago · 160 km deep · 38 km away
  25. 3.452 km SSW of Atka, Alaska · 1281 days ago · 33 km deep · 74 km away
  26. 2.940 km SSW of Atka, Alaska · 1281 days ago · 75 km deep · 64 km away
  27. 3.043 km WSW of Atka, Alaska · 1280 days ago · 139 km deep · 64 km away
  28. 2.728 km SW of Atka, Alaska · 1279 days ago · 100 km deep · 52 km away
  29. 3.249 km SE of Atka, Alaska · 1279 days ago · 150 km deep · 60 km away
  30. 3.320 km NNW of Atka, Alaska · 1278 days ago · 194 km deep · 19 km away
  31. 3.175 km NW of Atka, Alaska · 1278 days ago · 204 km deep · 74 km away
  32. 3.017 km SE of Atka, Alaska · 1277 days ago · 155 km deep · 34 km away
  33. 2.964 km SSW of Atka, Alaska · 1277 days ago · 35 km deep · 87 km away
  34. 2.629 km S of Atka, Alaska · 1277 days ago · 10 km deep · 51 km away
  35. 3.353 km SSW of Atka, Alaska · 1276 days ago · 35 km deep · 76 km away
  36. 1.959 km SSW of Atka, Alaska · 1275 days ago · 23 km deep · 82 km away
  37. 2.578 km SSE of Atka, Alaska · 1275 days ago · 17 km deep · 90 km away
  38. 1.832 km ESE of Atka, Alaska · 1274 days ago · 16 km deep · 36 km away
  39. 1.621 km N of Atka, Alaska · 1272 days ago · 5 km deep · 12 km away
  40. 2.621 km N of Atka, Alaska · 1272 days ago · 1 km deep · 12 km away
  41. 2.221 km N of Atka, Alaska · 1272 days ago · -3 km deep · 13 km away
  42. 2.655 km SE of Atka, Alaska · 1265 days ago · 35 km deep · 63 km away
  43. 2.9Andreanof Islands, Aleutian Islands, Alaska · 1265 days ago · 10 km deep · 59 km away
  44. 3.167 km E of Atka, Alaska · 1264 days ago · 74 km deep · 58 km away
  45. 2.266 km SSE of Atka, Alaska · 1263 days ago · 18 km deep · 81 km away

Before

  1. 1.967 km WSW of Atka, Alaska · 1322 days ago · 26 km deep · 89 km away
  2. 1.918 km S of Atka, Alaska · 1327 days ago · 24 km deep · 38 km away
  3. 3.566 km W of Atka, Alaska · 1327 days ago · 86 km deep · 83 km away
  4. 3.322 km NW of Atka, Alaska · 1330 days ago · 194 km deep · 29 km away
  5. 2.314 km SW of Atka, Alaska · 1331 days ago · 121 km deep · 38 km away
  6. 1.829 km E of Atka, Alaska · 1331 days ago · 23 km deep · 21 km away
  7. 4.0Andreanof Islands, Aleutian Islands, Alaska · 1332 days ago · 187 km deep · 41 km away
  8. 3.265 km E of Atka, Alaska · 1332 days ago · 105 km deep · 53 km away
  9. 2.056 km WSW of Atka, Alaska · 1334 days ago · 68 km deep · 80 km away
  10. 3.141 km NE of Atka, Alaska · 1339 days ago · 127 km deep · 17 km away
  11. 2.456 km SSE of Atka, Alaska · 1341 days ago · 22 km deep · 72 km away
  12. 2.017 km S of Atka, Alaska · 1342 days ago · 24 km deep · 38 km away
  13. 3.211 km NW of Atka, Alaska · 1345 days ago · 143 km deep · 26 km away
  14. 3.433 km S of Atka, Alaska · 1349 days ago · 10 km deep · 55 km away
  15. 2.158 km SW of Atka, Alaska · 1351 days ago · 52 km deep · 82 km away

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000jpi6 (also filed as ak02327eo85k). Read Thu, Oct 1, 2026, 2:31 AM UTC.