M5.3 earthquake 102 km S of Sand Point, Alaska

Magnitude

5.3 (mww), moderate

Local time

Fri, Jul 20, 2018, 11:58 PM AKDT

UTC

2018-07-21 07:58:39 UTC

Depth

10.0 km (6.2 mi), shallow

Epicenter

54.429° N, 160.807° W

Region

Alaska

Tsunami flag

Yes: a large quake in an oceanic region

Status

Reviewed by a seismologist

The USGS flags a quake this large in an oceanic region. The flag does not mean a tsunami happened; the tsunami warning centers decide that, and their messages are below when they issued any.

Current tsunami warnings: tsunami.gov. Warnings in force in the US also appear on our alerts pages.

Faulting

Reverse (thrust)

Moment magnitude

5.3 Mww

Nodal plane 1

Strike 249°, dip 27°, rake 93°

Nodal plane 2

Strike 66°, dip 64°, rake 88°

Location uncertainty

About 2.8 km horizontally, 1.6 km in depth

Magnitude uncertainty

±0.05

Depth from

Operator assigned

Station coverage gap

122°

Stations used

261

• Sand Point, AlaskaPopulation 1,064. Forecast103 kmS

After

1. 3.994 km S of Sand Point, AlaskaSat, Jul 21, 12:03 AM AKDT · 2993 days ago · 25 km deep · 10 km away
2. 3.899 km SSW of Sand Point, AlaskaSat, Jul 21, 12:15 AM AKDT · 2993 days ago · 10 km deep · 3 km away
3. 3.1102 km SSW of Sand Point, AlaskaSat, Jul 21, 2:09 AM AKDT · 2993 days ago · 5 km deep · 1 km away
4. 3.198 km S of Sand Point, AlaskaSat, Jul 21, 3:48 AM AKDT · 2993 days ago · 22 km deep · 7 km away
5. 3.899 km S of Sand Point, AlaskaSun, Jul 22, 9:13 AM AKDT · 2992 days ago · 12 km deep · 3 km away
6. 2.8Alaska PeninsulaMon, Jul 23, 6:44 AM AKDT · 2991 days ago · 24 km deep · 77 km away
7. 2.695 km SSE of King Cove, AlaskaMon, Jul 23, 6:47 AM AKDT · 2991 days ago · 33 km deep · 75 km away
8. 3.174 km ESE of King Cove, AlaskaTue, Jul 24, 6:29 AM AKDT · 2990 days ago · 26 km deep · 49 km away
9. 2.3119 km SSW of Sand Point, AlaskaWed, Jul 25, 2:04 PM AKDT · 2988 days ago · 57 km deep · 19 km away
10. 3.991 km SE of Sand Point, AlaskaSat, Jul 28, 4:22 AM AKDT · 2986 days ago · 23 km deep · 77 km away
11. 2.6south of AlaskaSun, Jul 29, 6:28 AM AKDT · 2985 days ago · 47 km deep · 65 km away
12. 2.4122 km S of Sand Point, AlaskaWed, Aug 1, 6:31 AM AKDT · 2982 days ago · 37 km deep · 22 km away
13. 2.3111 km SSW of Sand Point, AlaskaThu, Aug 2, 8:12 AM AKDT · 2981 days ago · 27 km deep · 11 km away
14. 2.899 km SSE of King Cove, AlaskaThu, Aug 2, 4:40 PM AKDT · 2980 days ago · 41 km deep · 60 km away
15. 3.099 km SE of King Cove, AlaskaSun, Aug 5, 4:04 AM AKDT · 2978 days ago · 22 km deep · 40 km away
16. 3.286 km SE of King Cove, AlaskaThu, Aug 9, 4:58 AM AKDT · 2974 days ago · 21 km deep · 49 km away
17. 2.582 km SSW of Sand Point, AlaskaSat, Aug 11, 12:17 AM AKDT · 2972 days ago · 24 km deep · 38 km away
18. 2.864 km SSE of King Cove, AlaskaMon, Aug 13, 8:51 PM AKDT · 2969 days ago · 35 km deep · 64 km away
19. 2.496 km SE of King Cove, AlaskaTue, Aug 14, 10:17 AM AKDT · 2969 days ago · 9 km deep · 43 km away
20. 2.399 km SSW of Sand Point, AlaskaTue, Aug 14, 12:48 PM AKDT · 2969 days ago · 16 km deep · 6 km away
21. 2.3106 km SSW of Sand Point, AlaskaTue, Aug 14, 2:09 PM AKDT · 2968 days ago · 40 km deep · 8 km away
22. 2.3109 km S of Sand Point, AlaskaSun, Aug 19, 8:00 PM AKDT · 2963 days ago · 26 km deep · 7 km away
23. 2.859 km SSE of Sand Point, AlaskaTue, Aug 21, 12:21 PM AKDT · 2962 days ago · 23 km deep · 69 km away
24. 2.459 km SSE of King Cove, AlaskaFri, Aug 31, 5:15 PM AKDT · 2951 days ago · 63 km deep · 68 km away
25. 2.994 km SE of King Cove, AlaskaSat, Sep 1, 8:45 AM AKDT · 2951 days ago · 29 km deep · 45 km away
26. 2.6102 km SSE of King Cove, AlaskaSat, Sep 1, 4:56 PM AKDT · 2950 days ago · 16 km deep · 45 km away
27. 2.6104 km SSE of King Cove, AlaskaSat, Sep 1, 5:38 PM AKDT · 2950 days ago · 23 km deep · 48 km away
28. 2.561 km SE of Sand Point, AlaskaFri, Sep 7, 8:51 AM AKDT · 2945 days ago · 22 km deep · 84 km away
29. 2.3100 km SE of King Cove, AlaskaSat, Sep 8, 2:11 AM AKDT · 2944 days ago · 25 km deep · 43 km away
30. 2.317 km SW of Sand Point, AlaskaThu, Sep 13, 8:20 PM AKDT · 2938 days ago · 70 km deep · 90 km away
31. 2.894 km SE of King Cove, AlaskaFri, Sep 14, 10:56 AM AKDT · 2938 days ago · 26 km deep · 39 km away
32. 3.5114 km S of Sand Point, AlaskaSat, Sep 15, 1:32 AM AKDT · 2937 days ago · 14 km deep · 14 km away

Before

1. 3.2104 km SSE of King Cove, AlaskaFri, Jul 20, 10:01 AM AKDT · 2994 days ago · 35 km deep · 80 km away
2. 3.492 km S of King Cove, AlaskaFri, Jul 20, 8:23 AM AKDT · 2994 days ago · 19 km deep · 86 km away
3. 3.5101 km SSW of Sand Point, AlaskaThu, Jul 19, 1:16 PM AKDT · 2994 days ago · 6 km deep · 3 km away
4. 2.4101 km S of Sand Point, AlaskaThu, Jul 19, 8:38 AM AKDT · 2995 days ago · 13 km deep · 5 km away
5. 2.9101 km S of Sand Point, AlaskaThu, Jul 19, 7:24 AM AKDT · 2995 days ago · 26 km deep · 1 km away
6. 3.0108 km S of Sand Point, AlaskaThu, Jul 19, 7:04 AM AKDT · 2995 days ago · 26 km deep · 5 km away
7. 2.9102 km SSW of Sand Point, AlaskaThu, Jul 19, 6:45 AM AKDT · 2995 days ago · 7 km deep · 6 km away
8. 4.5109 km SSW of Sand Point, AlaskaThu, Jul 19, 6:33 AM AKDT · 2995 days ago · 10 km deep · 7 km away
9. 3.9100 km S of Sand Point, AlaskaThu, Jul 19, 6:20 AM AKDT · 2995 days ago · 14 km deep · 3 km away
10. 5.8101 km S of Sand Point, AlaskaThu, Jul 19, 6:16 AM AKDT · 2995 days ago · 21 km deep · 2 km away · felt by 12 · tsunami flag
11. 2.799 km SE of King Cove, AlaskaWed, Jul 18, 6:39 PM AKDT · 2995 days ago · 6 km deep · 42 km away
12. 3.798 km SSW of Sand Point, AlaskaWed, Jul 18, 6:28 PM AKDT · 2995 days ago · 10 km deep · 6 km away
13. 2.7104 km SSW of Sand Point, AlaskaWed, Jul 18, 11:23 AM AKDT · 2996 days ago · 10 km deep · 2 km away
14. 3.198 km SSW of Sand Point, AlaskaWed, Jul 18, 11:20 AM AKDT · 2996 days ago · 10 km deep · 5 km away
15. 5.6103 km S of Sand Point, AlaskaWed, Jul 18, 11:06 AM AKDT · 2996 days ago · 30 km deep · 3 km away · felt by 8 · tsunami flag
16. 3.284 km S of Sand Point, AlaskaThu, Jul 12, 11:11 PM AKDT · 3001 days ago · 24 km deep · 28 km away
17. 2.380 km SE of King Cove, AlaskaWed, Jul 11, 9:34 AM AKDT · 3003 days ago · 27 km deep · 51 km away
18. 2.692 km SE of King Cove, AlaskaSat, Jul 7, 2:36 PM AKDT · 3006 days ago · 25 km deep · 44 km away
19. 2.858 km SSE of Sand Point, AlaskaSat, Jul 7, 12:46 PM AKDT · 3007 days ago · 26 km deep · 57 km away
20. 3.339 km ESE of King Cove, AlaskaSat, Jul 7, 4:18 AM AKDT · 3007 days ago · 92 km deep · 81 km away

From the USGS Earthquake Hazards Program and its partner networks, event us2000gaii (also filed as ak19929019, ak0189a72nng, at00pc7i5v, aacse0189a72nng, iscgem612366336). Read Wed, Sep 30, 2026, 8:24 AM UTC.