M1.8 earthquake 250 km W of Adak, Alaska

Magnitude

1.8 (ML, local (Richter)), micro

Magnitude from

Alaska Earthquake Center

Local time

Sat, Jul 21, 2018, 10:50 PM GMT+12

UTC

2018-07-21 10:50:58 UTC

Depth

88.7 km (55.1 mi), intermediate-depth

Epicenter

51.728° N, 179.738° E

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

16

After

1. 2.2249 km W of Adak, AlaskaSun, Jul 22, 7:55 AM GMT+12 · 2994 days ago · 170 km deep · 28 km away
2. 1.9246 km W of Adak, AlaskaSun, Jul 22, 8:09 AM GMT+12 · 2994 days ago · 24 km deep · 19 km away
3. 2.1Rat Islands, Aleutian Islands, AlaskaMon, Jul 23, 3:42 AM GMT+12 · 2994 days ago · 109 km deep · 68 km away
4. 2.6Rat Islands, Aleutian Islands, AlaskaMon, Jul 23, 12:07 PM GMT+12 · 2993 days ago · 109 km deep · 88 km away
5. 1.9204 km WSW of Adak, AlaskaSun, Jul 22, 7:57 PM HADT · 2993 days ago · 12 km deep · 78 km away
6. 2.0Rat Islands, Aleutian Islands, AlaskaMon, Jul 23, 7:29 PM GMT+12 · 2993 days ago · 42 km deep · 82 km away
7. 2.1274 km W of Adak, AlaskaTue, Jul 24, 9:20 AM GMT+12 · 2992 days ago · 13 km deep · 34 km away
8. 1.7231 km W of Adak, AlaskaMon, Jul 23, 5:25 PM HADT · 2992 days ago · 73 km deep · 30 km away
9. 1.7Rat Islands, Aleutian Islands, AlaskaTue, Jul 24, 5:43 PM GMT+12 · 2992 days ago · 58 km deep · 72 km away
10. 2.6262 km WSW of Adak, AlaskaTue, Jul 24, 5:45 PM GMT+12 · 2992 days ago · 54 km deep · 42 km away
11. 2.2235 km W of Adak, AlaskaTue, Jul 24, 3:26 AM HADT · 2992 days ago · 68 km deep · 28 km away
12. 3.0Rat Islands, Aleutian Islands, AlaskaWed, Jul 25, 1:09 AM GMT+12 · 2992 days ago · 24 km deep · 88 km away
13. 2.1226 km WSW of Adak, AlaskaTue, Jul 24, 12:09 PM HADT · 2991 days ago · 13 km deep · 56 km away
14. 2.1298 km W of Adak, AlaskaThu, Jul 26, 8:55 PM GMT+12 · 2990 days ago · 64 km deep · 50 km away
15. 2.8269 km WSW of Adak, AlaskaThu, Jul 26, 10:11 PM GMT+12 · 2990 days ago · 21 km deep · 68 km away
16. 2.6Rat Islands, Aleutian Islands, AlaskaFri, Jul 27, 4:01 PM GMT+12 · 2989 days ago · 127 km deep · 92 km away
17. 2.0208 km W of Adak, AlaskaFri, Jul 27, 5:34 PM HADT · 2988 days ago · 90 km deep · 42 km away
18. 3.0230 km W of Adak, AlaskaSat, Jul 28, 12:27 AM HADT · 2988 days ago · 87 km deep · 28 km away
19. 1.5260 km W of Adak, AlaskaSun, Jul 29, 12:36 PM GMT+12 · 2987 days ago · 16 km deep · 20 km away
20. 1.8Rat Islands, Aleutian Islands, AlaskaTue, Jul 31, 11:16 PM GMT+12 · 2985 days ago · 7 km deep · 96 km away
21. 2.0212 km WSW of Adak, AlaskaTue, Jul 31, 2:54 AM HADT · 2985 days ago · 12 km deep · 95 km away
22. 1.6267 km W of Adak, AlaskaWed, Aug 1, 7:12 AM GMT+12 · 2984 days ago · 13 km deep · 29 km away
23. 2.3281 km WSW of Adak, AlaskaThu, Aug 2, 1:42 AM GMT+12 · 2984 days ago · 28 km deep · 61 km away
24. 2.6193 km WSW of Adak, AlaskaThu, Aug 2, 6:59 AM HADT · 2983 days ago · 21 km deep · 89 km away
25. 2.6251 km W of Adak, AlaskaSat, Aug 4, 10:33 AM GMT+12 · 2981 days ago · 120 km deep · 16 km away
26. 4.1Rat Islands, Aleutian Islands, AlaskaSun, Aug 5, 12:15 PM GMT+12 · 2980 days ago · 32 km deep · 74 km away
27. 2.7243 km WSW of Adak, AlaskaSat, Aug 4, 12:37 PM GMT-12 · 2980 days ago · 14 km deep · 73 km away
28. 4.1Rat Islands, Aleutian Islands, AlaskaSun, Aug 5, 12:43 PM GMT+12 · 2980 days ago · 25 km deep · 84 km away
29. 2.8Rat Islands, Aleutian Islands, AlaskaSun, Aug 5, 3:08 PM GMT+12 · 2980 days ago · 21 km deep · 85 km away
30. 4.5Rat Islands, Aleutian Islands, AlaskaSun, Aug 5, 6:11 PM GMT+12 · 2980 days ago · 35 km deep · 74 km away
31. 1.9239 km W of Adak, AKSun, Aug 5, 7:09 PM GMT+12 · 2980 days ago · 6 km deep · 12 km away
32. 3.1Rat Islands, Aleutian Islands, AlaskaSun, Aug 5, 8:00 PM GMT+12 · 2980 days ago · 26 km deep · 84 km away
33. 4.5Rat Islands, Aleutian Islands, AlaskaSun, Aug 5, 10:37 PM GMT+12 · 2980 days ago · 60 km deep · 100 km away
34. 1.6286 km WSW of Adak, AlaskaTue, Aug 7, 1:56 AM GMT+12 · 2979 days ago · 37 km deep · 53 km away
35. 2.8252 km W of Adak, AlaskaTue, Aug 7, 5:40 AM GMT+12 · 2978 days ago · 197 km deep · 19 km away
36. 1.9Rat Islands, Aleutian Islands, AlaskaTue, Aug 7, 10:49 AM GMT+12 · 2978 days ago · 36 km deep · 70 km away
37. 2.8Rat Islands, Aleutian Islands, AlaskaWed, Aug 8, 10:06 PM GMT+12 · 2977 days ago · 104 km deep · 83 km away
38. 2.4289 km W of Adak, AlaskaThu, Aug 9, 6:09 AM GMT+12 · 2976 days ago · 80 km deep · 39 km away
39. 1.8181 km WSW of Adak, AlaskaThu, Aug 9, 2:12 AM HADT · 2976 days ago · 24 km deep · 80 km away
40. 2.7Rat Islands, Aleutian Islands, AlaskaFri, Aug 10, 6:35 AM GMT+12 · 2975 days ago · 123 km deep · 90 km away
41. 2.3286 km W of Adak, AlaskaFri, Aug 10, 4:09 PM GMT+12 · 2975 days ago · 70 km deep · 38 km away
42. 2.1Rat Islands, Aleutian Islands, AlaskaFri, Aug 10, 4:24 PM GMT+12 · 2975 days ago · 60 km deep · 63 km away
43. 3.7258 km WSW of Adak, AlaskaSat, Aug 11, 1:43 AM GMT+12 · 2975 days ago · 22 km deep · 50 km away
44. 3.7237 km W of Adak, AlaskaSat, Aug 11, 10:39 AM GMT+12 · 2974 days ago · 73 km deep · 28 km away
45. 3.7250 km WSW of Adak, AlaskaSat, Aug 11, 12:07 PM GMT+12 · 2974 days ago · 34 km deep · 73 km away
46. 2.0235 km WSW of Adak, AlaskaFri, Aug 10, 3:16 PM HADT · 2974 days ago · 15 km deep · 68 km away
47. 2.3Rat Islands, Aleutian Islands, AlaskaSat, Aug 11, 10:26 PM GMT+12 · 2974 days ago · 71 km deep · 86 km away
48. 2.0230 km W of Adak, AlaskaSat, Aug 11, 3:28 AM HADT · 2974 days ago · 85 km deep · 22 km away
49. 2.2198 km WSW of Adak, AlaskaSat, Aug 11, 11:19 AM HADT · 2973 days ago · 23 km deep · 76 km away
50. 2.0239 km WSW of Adak, AlaskaSat, Aug 11, 9:47 PM GMT-12 · 2973 days ago · 13 km deep · 85 km away
51. 2.0Rat Islands, Aleutian Islands, AlaskaMon, Aug 13, 9:09 AM GMT+12 · 2972 days ago · 19 km deep · 84 km away
52. 1.8200 km WSW of Adak, AlaskaMon, Aug 13, 4:07 AM HADT · 2972 days ago · 26 km deep · 95 km away
53. 4.1278 km WSW of Adak, AlaskaTue, Aug 14, 10:44 AM GMT+12 · 2971 days ago · 47 km deep · 72 km away
54. 1.9258 km WSW of Adak, AlaskaTue, Aug 14, 11:59 AM GMT+12 · 2971 days ago · 66 km deep · 35 km away
55. 2.3Rat Islands, Aleutian Islands, AlaskaTue, Aug 14, 2:05 PM GMT+12 · 2971 days ago · 7 km deep · 51 km away
56. 1.7Rat Islands, Aleutian Islands, AlaskaWed, Aug 15, 12:36 AM GMT+12 · 2971 days ago · 30 km deep · 72 km away
57. 2.2Rat Islands, Aleutian Islands, AlaskaWed, Aug 15, 7:06 AM GMT+12 · 2970 days ago · 122 km deep · 97 km away
58. 1.9214 km W of Adak, AlaskaTue, Aug 14, 1:52 PM HADT · 2970 days ago · 106 km deep · 36 km away
59. 2.5Rat Islands, Aleutian Islands, AlaskaWed, Aug 15, 5:07 PM GMT+12 · 2970 days ago · 92 km deep · 85 km away
60. 1.7269 km WSW of Adak, AlaskaWed, Aug 15, 6:18 PM GMT+12 · 2970 days ago · 49 km deep · 44 km away

The first 60 of 119.

Before

1. 1.8266 km WSW of Adak, AlaskaSat, Jul 21, 9:38 PM GMT+12 · 2995 days ago · 31 km deep · 43 km away
2. 2.6185 km WSW of Adak, AlaskaFri, Jul 20, 5:30 PM HADT · 2995 days ago · 73 km deep · 75 km away
3. 2.1195 km WSW of Adak, AlaskaWed, Jul 18, 4:54 PM HADT · 2997 days ago · 16 km deep · 100 km away
4. 2.3214 km W of Adak, AlaskaWed, Jul 18, 10:59 AM HADT · 2997 days ago · 169 km deep · 52 km away
5. 2.0295 km W of Adak, AlaskaWed, Jul 18, 4:55 PM GMT+12 · 2998 days ago · 72 km deep · 45 km away
6. 3.3Rat Islands, Aleutian Islands, AlaskaWed, Jul 18, 11:47 AM GMT+12 · 2998 days ago · 54 km deep · 62 km away
7. 1.9188 km WSW of Adak, AlaskaMon, Jul 16, 5:42 PM HADT · 2999 days ago · 26 km deep · 88 km away
8. 2.0Rat Islands, Aleutian Islands, AlaskaMon, Jul 16, 8:07 PM GMT+12 · 3000 days ago · 34 km deep · 70 km away
9. 2.5Rat Islands, Aleutian Islands, AlaskaMon, Jul 16, 12:17 PM GMT+12 · 3000 days ago · 112 km deep · 99 km away
10. 1.5188 km WSW of Adak, AlaskaSun, Jul 15, 12:02 PM HADT · 3000 days ago · 26 km deep · 86 km away
11. 1.9202 km WSW of Adak, AlaskaSat, Jul 14, 9:01 PM HADT · 3001 days ago · 40 km deep · 66 km away
12. 1.8172 km WSW of Adak, AlaskaSat, Jul 14, 2:35 PM HADT · 3001 days ago · 7 km deep · 95 km away
13. 1.7Rat Islands, Aleutian Islands, AlaskaSun, Jul 15, 10:30 AM GMT+12 · 3001 days ago · 50 km deep · 83 km away
14. 2.0200 km W of Adak, AlaskaSat, Jul 14, 6:43 AM HADT · 3002 days ago · 70 km deep · 54 km away
15. 2.2207 km WSW of Adak, AlaskaSat, Jul 14, 5:49 AM HADT · 3002 days ago · 26 km deep · 69 km away
16. 2.6Rat Islands, Aleutian Islands, AlaskaSat, Jul 14, 10:36 PM GMT+12 · 3002 days ago · 81 km deep · 62 km away
17. 2.3190 km WSW of Adak, AlaskaFri, Jul 13, 11:23 PM HADT · 3002 days ago · 18 km deep · 90 km away
18. 2.2283 km W of Adak, AlaskaSat, Jul 14, 10:39 AM GMT+12 · 3002 days ago · 80 km deep · 33 km away
19. 2.1242 km W of Adak, AlaskaFri, Jul 13, 10:32 AM GMT+12 · 3003 days ago · 11 km deep · 25 km away
20. 2.0167 km W of Adak, AlaskaThu, Jul 12, 10:44 AM HADT · 3003 days ago · 11 km deep · 83 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak0189a8ta3x (also filed as ak19969855). Read Fri, Oct 2, 2026, 3:45 AM UTC.