M4.1 earthquake 122 km SSW of Unalaska, Alaska

Magnitude

4.1 (mb), light

Local time

Thu, Jun 18, 2020, 6:29 PM AKDT

UTC

2020-06-19 02:29:35 UTC

Depth

41.4 km (25.7 mi), shallow

Epicenter

52.806° N, 166.978° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 8.5 km horizontally, 7.7 km in depth

Magnitude uncertainty

±0.05

Depth from

From location

Station coverage gap

138°

Stations used

60

• Unalaska, AlaskaPopulation 4,491. Forecast122 kmSSW

After

1. 1.863 km SW of Unalaska, AlaskaThu, Jun 18, 6:49 PM AKDT · 2294 days ago · 5 km deep · 81 km away
2. 2.5135 km S of Unalaska, AlaskaThu, Jun 18, 6:50 PM AKDT · 2294 days ago · 35 km deep · 18 km away
3. 1.895 km E of Nikolski, AlaskaThu, Jun 18, 8:58 PM AKDT · 2294 days ago · 46 km deep · 36 km away
4. 1.9100 km E of Nikolski, AlaskaThu, Jun 18, 11:44 PM AKDT · 2294 days ago · 26 km deep · 28 km away
5. 1.898 km E of Nikolski, AlaskaThu, Jun 18, 11:49 PM AKDT · 2294 days ago · 22 km deep · 31 km away
6. 2.0133 km S of Unalaska, AlaskaSat, Jun 20, 1:51 AM AKDT · 2293 days ago · 1 km deep · 28 km away
7. 1.598 km E of Nikolski, AlaskaTue, Jun 23, 5:37 AM AKDT · 2289 days ago · 9 km deep · 39 km away
8. 2.595 km SE of Nikolski, AlaskaWed, Jun 24, 8:14 PM AKDT · 2288 days ago · 10 km deep · 82 km away
9. 1.556 km SW of Unalaska, AlaskaThu, Jun 25, 7:42 AM AKDT · 2287 days ago · 13 km deep · 80 km away
10. 3.672 km SW of Unalaska, AlaskaThu, Jun 25, 9:14 PM AKDT · 2287 days ago · 74 km deep · 75 km away
11. 2.067 km SW of Unalaska, AlaskaFri, Jun 26, 2:34 AM AKDT · 2286 days ago · 55 km deep · 83 km away
12. 1.629 km SSW of Unalaska, AlaskaFri, Jun 26, 5:32 PM AKDT · 2286 days ago · 86 km deep · 93 km away
13. 2.079 km S of Unalaska, AlaskaMon, Jun 29, 12:14 AM AKDT · 2284 days ago · 25 km deep · 46 km away
14. 2.532 km ESE of Nikolski, AlaskaTue, Jun 30, 9:43 AM AKDT · 2282 days ago · 35 km deep · 98 km away
15. 2.758 km SE of Nikolski, AlaskaWed, Jul 1, 1:06 PM AKDT · 2281 days ago · 35 km deep · 80 km away
16. 2.041 km E of Nikolski, AlaskaFri, Jul 3, 11:27 PM AKDT · 2279 days ago · 58 km deep · 86 km away
17. 1.661 km S of Unalaska, AlaskaSat, Jul 4, 9:20 PM AKDT · 2278 days ago · 22 km deep · 69 km away
18. 1.969 km WSW of Unalaska, AlaskaSun, Jul 5, 12:48 AM AKDT · 2278 days ago · 7 km deep · 86 km away
19. 1.5101 km E of Nikolski, AlaskaMon, Jul 6, 11:52 AM AKDT · 2276 days ago · 7 km deep · 28 km away
20. 2.5104 km E of Nikolski, AlaskaMon, Jul 6, 11:56 AM AKDT · 2276 days ago · 6 km deep · 24 km away
21. 3.659 km ESE of Nikolski, AlaskaMon, Jul 6, 3:16 PM AKDT · 2276 days ago · 28 km deep · 72 km away
22. 2.772 km S of Unalaska, AlaskaTue, Jul 7, 4:03 PM AKDT · 2275 days ago · 60 km deep · 51 km away
23. 3.8122 km S of Unalaska, AlaskaTue, Jul 7, 9:29 PM AKDT · 2275 days ago · 35 km deep · 9 km away
24. 1.890 km SE of Nikolski, AlaskaThu, Jul 9, 6:41 PM AKDT · 2273 days ago · 6 km deep · 81 km away
25. 1.676 km S of Unalaska, AlaskaThu, Jul 9, 8:45 PM AKDT · 2273 days ago · 29 km deep · 47 km away
26. 1.569 km WSW of Unalaska, AlaskaFri, Jul 10, 4:10 AM AKDT · 2272 days ago · 98 km deep · 91 km away
27. 3.0108 km S of Unalaska, AlaskaSat, Jul 11, 6:38 PM AKDT · 2271 days ago · 35 km deep · 17 km away
28. 1.9125 km SSW of Unalaska, AlaskaSun, Jul 12, 7:10 PM AKDT · 2270 days ago · 26 km deep · 3 km away
29. 4.374 km S of Unalaska, AlaskaFri, Jul 17, 6:27 PM AKDT · 2265 days ago · 56 km deep · 48 km away
30. 1.692 km SSW of Unalaska, AlaskaSat, Jul 18, 10:15 AM AKDT · 2264 days ago · 26 km deep · 34 km away
31. 1.977 km SSW of Unalaska, AlaskaMon, Jul 20, 2:17 PM AKDT · 2262 days ago · 26 km deep · 45 km away
32. 2.179 km ENE of Nikolski, AlaskaTue, Jul 21, 1:27 AM AKDT · 2262 days ago · 61 km deep · 59 km away
33. 2.047 km SSE of Unalaska, AlaskaThu, Jul 23, 3:28 PM AKDT · 2259 days ago · 47 km deep · 93 km away
34. 3.187 km SSW of Unalaska, AlaskaSat, Jul 25, 1:29 AM AKDT · 2258 days ago · 35 km deep · 36 km away
35. 3.073 km S of Unalaska, AlaskaSat, Jul 25, 2:30 AM AKDT · 2257 days ago · 35 km deep · 50 km away
36. 2.948 km SSW of Unalaska, AlaskaMon, Jul 27, 4:51 PM AKDT · 2255 days ago · 73 km deep · 77 km away
37. 1.755 km SSE of Unalaska, AlaskaWed, Jul 29, 3:22 PM AKDT · 2253 days ago · 35 km deep · 80 km away
38. 1.872 km WSW of Unalaska, AlaskaThu, Jul 30, 9:28 AM AKDT · 2252 days ago · 7 km deep · 92 km away
39. 1.734 km SSW of Unalaska, AlaskaFri, Jul 31, 1:00 AM AKDT · 2252 days ago · 75 km deep · 88 km away
40. 1.837 km ESE of Nikolski, AlaskaSat, Aug 1, 3:02 PM AKDT · 2250 days ago · 42 km deep · 95 km away
41. 1.8100 km SE of Unalaska, AlaskaSat, Aug 1, 7:10 PM AKDT · 2250 days ago · 25 km deep · 98 km away
42. 1.696 km SSW of Unalaska, AlaskaSun, Aug 2, 10:03 PM AKDT · 2249 days ago · 40 km deep · 39 km away
43. 1.859 km SW of Unalaska, AlaskaSat, Aug 8, 3:38 PM AKDT · 2243 days ago · 73 km deep · 72 km away
44. 2.185 km SSW of Unalaska, AlaskaSun, Aug 9, 3:58 PM AKDT · 2242 days ago · 26 km deep · 37 km away
45. 1.657 km SSE of Unalaska, AlaskaMon, Aug 10, 5:31 PM AKDT · 2241 days ago · 42 km deep · 93 km away
46. 1.677 km SW of Unalaska, AlaskaMon, Aug 10, 6:18 PM AKDT · 2241 days ago · 13 km deep · 72 km away
47. 2.2139 km ESE of Nikolski, AlaskaMon, Aug 10, 7:45 PM AKDT · 2241 days ago · 74 km deep · 24 km away
48. 2.999 km E of Nikolski, AlaskaTue, Aug 11, 5:23 AM AKDT · 2240 days ago · 35 km deep · 36 km away
49. 1.952 km SSE of Unalaska, AlaskaWed, Aug 12, 3:37 AM AKDT · 2239 days ago · 50 km deep · 86 km away
50. 3.384 km SSW of Unalaska, AlaskaThu, Aug 13, 10:32 PM AKDT · 2238 days ago · 14 km deep · 47 km away
51. 2.626 km S of Unalaska, AlaskaSat, Aug 15, 6:01 PM AKDT · 2236 days ago · 87 km deep · 97 km away
52. 1.644 km E of Nikolski, AlaskaSat, Aug 15, 9:05 PM AKDT · 2236 days ago · 25 km deep · 82 km away
53. 1.975 km SW of Unalaska, AlaskaSun, Aug 16, 2:16 AM AKDT · 2236 days ago · 9 km deep · 68 km away
54. 2.276 km SSW of Unalaska, AlaskaMon, Aug 17, 3:10 PM AKDT · 2234 days ago · 28 km deep · 46 km away
55. 1.962 km SW of Unalaska, AlaskaMon, Aug 17, 4:51 PM AKDT · 2234 days ago · 6 km deep · 82 km away

Before

1. 2.1137 km S of Unalaska, AlaskaThu, Jun 18, 9:28 AM AKDT · 2294 days ago · 5 km deep · 19 km away
2. 1.655 km SW of Unalaska, AlaskaSun, Jun 14, 12:01 PM AKDT · 2298 days ago · 8 km deep · 81 km away
3. 1.799 km ESE of Nikolski, AlaskaSat, Jun 13, 8:43 PM AKDT · 2299 days ago · 18 km deep · 30 km away
4. 2.694 km E of Nikolski, AlaskaSat, Jun 13, 8:34 AM AKDT · 2299 days ago · 35 km deep · 39 km away
5. 3.199 km E of Nikolski, AlaskaSat, Jun 13, 8:19 AM AKDT · 2299 days ago · 24 km deep · 29 km away
6. 2.584 km S of Unalaska, AlaskaFri, Jun 12, 4:59 PM AKDT · 2300 days ago · 35 km deep · 38 km away
7. 2.974 km ESE of Nikolski, AlaskaThu, Jun 11, 7:30 PM AKDT · 2301 days ago · 35 km deep · 54 km away
8. 1.980 km SSW of Unalaska, AlaskaSun, Jun 7, 4:57 PM AKDT · 2305 days ago · 26 km deep · 42 km away
9. 2.177 km SSW of Unalaska, AlaskaSun, Jun 7, 12:27 PM AKDT · 2305 days ago · 42 km deep · 45 km away
10. 1.777 km SSW of Unalaska, AlaskaSun, Jun 7, 12:21 PM AKDT · 2305 days ago · 26 km deep · 45 km away
11. 2.171 km SSW of Unalaska, AlaskaSun, Jun 7, 12:18 PM AKDT · 2305 days ago · 46 km deep · 51 km away
12. 1.780 km SSW of Unalaska, AlaskaSun, Jun 7, 12:12 PM AKDT · 2305 days ago · 26 km deep · 41 km away
13. 1.780 km S of Unalaska, AlaskaSat, Jun 6, 7:27 PM AKDT · 2306 days ago · 36 km deep · 44 km away
14. 1.792 km SW of Unalaska, AlaskaFri, Jun 5, 6:13 AM AKDT · 2307 days ago · 77 km deep · 55 km away
15. 1.655 km SW of Unalaska, AlaskaWed, Jun 3, 10:03 AM AKDT · 2309 days ago · 7 km deep · 87 km away
16. 1.8Fox Islands, Aleutian Islands, AlaskaTue, Jun 2, 6:33 PM AKDT · 2310 days ago · 9 km deep · 60 km away
17. 3.7178 km S of Unalaska, AlaskaTue, Jun 2, 1:24 PM AKDT · 2310 days ago · 10 km deep · 85 km away
18. 2.190 km SSW of Unalaska, AlaskaMon, Jun 1, 4:33 PM AKDT · 2311 days ago · 87 km deep · 40 km away
19. 3.791 km SSW of Unalaska, AlaskaMon, Jun 1, 1:33 PM AKDT · 2311 days ago · 40 km deep · 34 km away
20. 2.5144 km ESE of Nikolski, AlaskaSun, May 31, 11:25 AM AKDT · 2312 days ago · 9 km deep · 30 km away

From the USGS Earthquake Hazards Program and its partner networks, event us6000aekz. Read Tue, Sep 29, 2026, 9:48 PM UTC.