Alaska earthquakes

M1.9 earthquake Alaska Peninsula

A magnitude 1.9 earthquake struck in the Alaska Peninsula on Mon, Feb 20, 2023, 9:46 AM AKST (18:46 UTC), 66 km (41 mi) below the surface.

A larger quake followed: M3.4 102 km E of Chignik, 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
1.9 (ml), micro
Local time
UTC
2023-02-20 18:46:01 UTC
Depth
66.1 km (41.1 mi), shallow
Epicenter
56.762° N, 156.470° 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
35

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 60 in the 30 days before it.

After

  1. 1.7Alaska Peninsula · 1318 days ago · 1 km deep · 96 km away
  2. 3.1116 km E of Chignik, Alaska · 1318 days ago · 27 km deep · 52 km away
  3. 1.941 km E of Port Heiden, Alaska · 1317 days ago · 0 km deep · 91 km away
  4. 2.345 km E of Port Heiden, Alaska · 1317 days ago · 6 km deep · 87 km away
  5. 1.540 km ESE of Port Heiden, Alaska · 1317 days ago · 2 km deep · 93 km away
  6. 1.837 km E of Port Heiden, Alaska · 1317 days ago · 0 km deep · 96 km away
  7. 1.937 km E of Port Heiden, Alaska · 1317 days ago · -3 km deep · 96 km away
  8. 2.235 km E of Port Heiden, Alaska · 1317 days ago · 3 km deep · 97 km away
  9. 2.033 km E of Port Heiden, Alaska · 1317 days ago · 2 km deep · 99 km away
  10. 1.837 km ESE of Port Heiden, Alaska · 1317 days ago · 8 km deep · 96 km away
  11. 2.273 km S of Ugashik, Alaska · 1316 days ago · 84 km deep · 59 km away
  12. 1.964 km WSW of Karluk, Alaska · 1315 days ago · 64 km deep · 88 km away · felt by 1
  13. 1.933 km E of Port Heiden, Alaska · 1314 days ago · 1 km deep · 100 km away
  14. 2.244 km E of Port Heiden, Alaska · 1314 days ago · 4 km deep · 88 km away
  15. 1.737 km E of Port Heiden, Alaska · 1314 days ago · -3 km deep · 95 km away
  16. 1.837 km E of Port Heiden, Alaska · 1314 days ago · -2 km deep · 95 km away
  17. 2.033 km E of Port Heiden, Alaska · 1313 days ago · 2 km deep · 99 km away
  18. 1.979 km ESE of Ugashik, Alaska · 1313 days ago · 4 km deep · 58 km away
  19. 1.6Alaska Peninsula · 1313 days ago · -2 km deep · 95 km away
  20. 2.934 km E of Port Heiden, Alaska · 1312 days ago · 9 km deep · 99 km away
  21. 2.3Alaska Peninsula · 1312 days ago · 11 km deep · 88 km away
  22. 1.874 km W of Karluk, Alaska · 1310 days ago · 12 km deep · 97 km away
  23. 1.8Alaska Peninsula · 1310 days ago · -3 km deep · 98 km away
  24. 1.936 km E of Port Heiden, Alaska · 1310 days ago · 3 km deep · 97 km away
  25. 2.036 km E of Port Heiden, Alaska · 1310 days ago · 1 km deep · 96 km away
  26. 3.2113 km ESE of Chignik, Alaska · 1310 days ago · 26 km deep · 80 km away
  27. 3.0112 km E of Chignik, Alaska · 1309 days ago · 23 km deep · 72 km away
  28. 2.135 km E of Port Heiden, Alaska · 1309 days ago · 4 km deep · 98 km away
  29. 2.536 km E of Port Heiden, Alaska · 1309 days ago · 1 km deep · 97 km away
  30. 1.736 km E of Port Heiden, Alaska · 1308 days ago · 2 km deep · 97 km away
  31. 2.133 km E of Port Heiden, Alaska · 1308 days ago · 0 km deep · 99 km away
  32. 1.774 km W of Karluk, Alaska · 1308 days ago · 8 km deep · 97 km away
  33. 2.033 km E of Port Heiden, Alaska · 1306 days ago · 0 km deep · 100 km away
  34. 1.648 km WNW of Akhiok, Alaska · 1306 days ago · 6 km deep · 99 km away
  35. 2.6Alaska Peninsula · 1305 days ago · 6 km deep · 99 km away
  36. 2.036 km E of Port Heiden, Alaska · 1305 days ago · 5 km deep · 96 km away
  37. 1.993 km W of Akhiok, Alaska · 1305 days ago · 1 km deep · 50 km away
  38. 1.692 km WSW of Karluk, Alaska · 1302 days ago · 80 km deep · 64 km away
  39. 1.633 km E of Port Heiden, Alaska · 1302 days ago · 1 km deep · 100 km away
  40. 2.461 km SW of Karluk, Alaska · 1302 days ago · 63 km deep · 91 km away
  41. 1.856 km WSW of Karluk, Alaska · 1302 days ago · 61 km deep · 100 km away
  42. 1.957 km ENE of Ugashik, Alaska · 1302 days ago · 127 km deep · 100 km away
  43. 2.252 km ESE of Chignik, Alaska · 1302 days ago · 22 km deep · 97 km away
  44. 1.834 km E of Port Heiden, Alaska · 1301 days ago · 1 km deep · 98 km away
  45. 2.433 km E of Port Heiden, Alaska · 1300 days ago · 1 km deep · 99 km away
  46. 2.934 km ESE of Port Heiden, Alaska · 1300 days ago · 10 km deep · 99 km away
  47. 2.182 km ESE of Ugashik, Alaska · 1300 days ago · 75 km deep · 42 km away
  48. 1.674 km SE of Ugashik, Alaska · 1299 days ago · 18 km deep · 41 km away
  49. 1.795 km SSE of Ugashik, Alaska · 1299 days ago · 48 km deep · 19 km away
  50. 1.792 km W of Akhiok, Alaska · 1299 days ago · 61 km deep · 52 km away
  51. 1.634 km E of Port Heiden, Alaska · 1298 days ago · 4 km deep · 99 km away
  52. 2.063 km WSW of Akhiok, Alaska · 1298 days ago · 73 km deep · 79 km away
  53. 2.7114 km E of Chignik, Alaska · 1297 days ago · 20 km deep · 47 km away
  54. 2.036 km E of Port Heiden, Alaska · 1297 days ago · 0 km deep · 96 km away
  55. 2.083 km S of Ugashik, Alaska · 1297 days ago · 6 km deep · 41 km away
  56. 1.846 km WSW of Akhiok, Alaska · 1296 days ago · 11 km deep · 97 km away
  57. 2.056 km SE of Ugashik, Alaska · 1296 days ago · 91 km deep · 53 km away
  58. 2.134 km E of Port Heiden, Alaska · 1296 days ago · 1 km deep · 99 km away
  59. 2.033 km E of Port Heiden, Alaska · 1296 days ago · 2 km deep · 99 km away
  60. 2.775 km ESE of Ugashik, Alaska · 1295 days ago · 3 km deep · 43 km away

The first 60 of at least 199.

Before

  1. 2.057 km E of Port Heiden, Alaska · 1319 days ago · 122 km deep · 77 km away
  2. 1.935 km E of Port Heiden, Alaska · 1319 days ago · 3 km deep · 98 km away
  3. 1.835 km E of Port Heiden, Alaska · 1319 days ago · 3 km deep · 97 km away
  4. 2.2111 km E of Chignik, Alaska · 1321 days ago · 15 km deep · 48 km away
  5. 2.033 km E of Port Heiden, Alaska · 1321 days ago · 1 km deep · 99 km away
  6. 2.639 km ESE of Port Heiden, Alaska · 1321 days ago · 4 km deep · 94 km away
  7. 2.1Alaska Peninsula · 1321 days ago · 6 km deep · 99 km away
  8. 2.4106 km SE of Ugashik, Alaska · 1321 days ago · 64 km deep · 33 km away
  9. 2.5119 km E of Chignik, Alaska · 1322 days ago · 15 km deep · 51 km away
  10. 2.447 km S of Ugashik, Alaska · 1322 days ago · 7 km deep · 67 km away
  11. 2.133 km E of Port Heiden, Alaska · 1322 days ago · 2 km deep · 99 km away
  12. 2.389 km E of Chignik, Alaska · 1323 days ago · 38 km deep · 48 km away
  13. 2.7116 km E of Chignik, Alaska · 1324 days ago · 55 km deep · 48 km away
  14. 2.133 km E of Port Heiden, Alaska · 1324 days ago · 2 km deep · 100 km away
  15. 2.355 km SSE of Ugashik, Alaska · 1324 days ago · 89 km deep · 46 km away
  16. 2.575 km E of Ugashik, Alaska · 1325 days ago · 88 km deep · 90 km away
  17. 1.872 km W of Karluk, Alaska · 1325 days ago · 1 km deep · 99 km away
  18. 2.099 km W of Akhiok, Alaska · 1325 days ago · 15 km deep · 44 km away
  19. 2.373 km W of Karluk, Alaska · 1327 days ago · 8 km deep · 98 km away
  20. 1.778 km W of Karluk, Alaska · 1328 days ago · 8 km deep · 95 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0232cned4a. Read Wed, Sep 30, 2026, 9:30 PM UTC.