M1.6 earthquake 29 km WNW of Samoa, California

Magnitude

1.6 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Tue, May 20, 1980, 7:16 PM PDT

UTC

1980-05-21 02:16:44 UTC

Depth

19.2 km (11.9 mi), shallow

Epicenter

40.932° N, 124.499° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 7.5 km horizontally, 1.4 km in depth

Depth from

From location

Station coverage gap

299°, poorly surrounded by stations

Stations used

4

• Manila, CaliforniaPopulation 784. Forecast30 kmWNW
• Eureka, CaliforniaPopulation 27,017. Forecast32 kmWNW
• Chico, CaliforniaPopulation 121,345. Forecast262 kmWNW

After

1. 1.657 km WSW of Ferndale, CaliforniaTue, May 20, 7:50 PM PDT · 16936 days ago · 9 km deep · 72 km away
2. 1.629 km WSW of Ferndale, CaliforniaWed, May 21, 12:45 PM PDT · 16935 days ago · 22 km deep · 51 km away
3. 1.75 km NE of Myers Flat, CaliforniaWed, May 21, 1:55 PM PDT · 16935 days ago · 5 km deep · 89 km away
4. 1.529 km WSW of Ferndale, CaliforniaThu, May 22, 1:47 AM PDT · 16935 days ago · 24 km deep · 54 km away
5. 2.096 km W of Trinidad, CaliforniaThu, May 22, 3:56 AM PDT · 16935 days ago · 5 km deep · 71 km away
6. 1.521 km SSW of Ferndale, CaliforniaFri, May 23, 12:21 AM PDT · 16934 days ago · 22 km deep · 59 km away
7. 2.02 km E of Cutten, CaliforniaFri, May 23, 12:41 AM PDT · 16934 days ago · 11 km deep · 37 km away
8. 1.56 km NNE of Myers Flat, CaliforniaFri, May 23, 2:41 PM PDT · 16933 days ago · 6 km deep · 89 km away
9. 2.119 km WNW of Indianola, CaliforniaFri, May 23, 8:17 PM PDT · 16933 days ago · 24 km deep · 22 km away
10. 3.536 km SSW of Ferndale, CaliforniaSat, May 24, 10:31 PM PDT · 16932 days ago · 26 km deep · 70 km away
11. 1.628 km SW of Ferndale, CaliforniaSun, May 25, 10:40 AM PDT · 16931 days ago · 19 km deep · 61 km away
12. 2.128 km SW of Ferndale, CaliforniaSun, May 25, 12:28 PM PDT · 16931 days ago · 19 km deep · 61 km away
13. 1.627 km SW of Ferndale, CaliforniaSun, May 25, 2:52 PM PDT · 16931 days ago · 18 km deep · 61 km away
14. 3.024 km SSW of Ferndale, CaliforniaMon, May 26, 12:30 AM PDT · 16931 days ago · 26 km deep · 64 km away
15. 1.527 km WSW of Ferndale, CaliforniaMon, May 26, 4:28 AM PDT · 16931 days ago · 24 km deep · 54 km away
16. 1.89 km W of Weott, CaliforniaMon, May 26, 1:01 PM PDT · 16930 days ago · 31 km deep · 79 km away
17. 1.631 km WSW of Ferndale, CaliforniaMon, May 26, 9:52 PM PDT · 16930 days ago · 22 km deep · 49 km away
18. 2.917 km NW of Mad River, CaliforniaTue, May 27, 12:57 AM PDT · 16930 days ago · 26 km deep · 81 km away
19. 1.529 km SW of Ferndale, CaliforniaTue, May 27, 3:45 AM PDT · 16930 days ago · 18 km deep · 61 km away
20. 2.226 km ENE of Westhaven-Moonstone, CaliforniaTue, May 27, 9:24 AM PDT · 16929 days ago · 24 km deep · 62 km away
21. 2.255 km W of Ferndale, CaliforniaWed, May 28, 5:10 AM PDT · 16929 days ago · 42 km deep · 55 km away
22. 2.478 km WNW of Samoa, CaliforniaWed, May 28, 11:08 PM PDT · 16928 days ago · 6 km deep · 49 km away
23. 2.738 km SW of Ferndale, CaliforniaThu, May 29, 7:54 AM PDT · 16928 days ago · 23 km deep · 69 km away
24. 1.739 km SW of Ferndale, CaliforniaFri, May 30, 2:15 AM PDT · 16927 days ago · 18 km deep · 71 km away
25. 1.624 km WSW of Ferndale, CaliforniaMon, Jun 2, 5:38 AM PDT · 16924 days ago · 24 km deep · 52 km away
26. 2.536 km WSW of Ferndale, CaliforniaMon, Jun 2, 9:06 AM PDT · 16924 days ago · 18 km deep · 58 km away
27. 3.033 km SW of Ferndale, CaliforniaMon, Jun 2, 12:20 PM PDT · 16923 days ago · 26 km deep · 64 km away
28. 1.810 km W of Ferndale, CaliforniaMon, Jun 2, 2:00 PM PDT · 16923 days ago · 20 km deep · 42 km away
29. 1.962 km W of Ferndale, CaliforniaThu, Jun 5, 12:54 AM PDT · 16921 days ago · 9 km deep · 57 km away
30. 2.513 km WSW of Redcrest, CaliforniaThu, Jun 5, 7:46 AM PDT · 16921 days ago · 30 km deep · 72 km away
31. 1.731 km SW of Ferndale, CaliforniaThu, Jun 5, 3:14 PM PDT · 16920 days ago · 19 km deep · 63 km away
32. 3.893 km W of Indianola, CaliforniaSat, Jun 7, 3:17 AM PDT · 16919 days ago · 5 km deep · 70 km away
33. 2.716 km SSW of Ferndale, CaliforniaSat, Jun 7, 7:32 PM PDT · 16918 days ago · 29 km deep · 55 km away
34. 1.615 km SSW of Ferndale, CaliforniaSun, Jun 8, 5:03 AM PDT · 16918 days ago · 26 km deep · 57 km away
35. 4.0101 km WSW of Ferndale, CaliforniaMon, Jun 9, 11:39 AM PDT · 16916 days ago · 0 km deep · 99 km away
36. 2.027 km SSW of Ferndale, CaliforniaTue, Jun 10, 1:15 PM PDT · 16915 days ago · 12 km deep · 66 km away
37. 2.438 km SW of Ferndale, CaliforniaTue, Jun 10, 11:01 PM PDT · 16915 days ago · 21 km deep · 69 km away
38. 2.65 km WNW of Trinidad, CaliforniaThu, Jun 12, 9:10 PM PDT · 16913 days ago · 26 km deep · 29 km away
39. 2.475 km WSW of Ferndale, CaliforniaFri, Jun 13, 2:43 PM PDT · 16912 days ago · 7 km deep · 81 km away
40. 2.536 km WNW of Samoa, CaliforniaFri, Jun 13, 4:21 PM PDT · 16912 days ago · 27 km deep · 7 km away
41. 2.35 km SE of Ferndale, CaliforniaFri, Jun 13, 6:40 PM PDT · 16912 days ago · 11 km deep · 50 km away
42. 3.031 km SW of Ferndale, CaliforniaSat, Jun 14, 1:29 AM PDT · 16912 days ago · 16 km deep · 63 km away
43. 2.316 km ESE of Blue Lake, CaliforniaSat, Jun 14, 9:04 AM PDT · 16912 days ago · 62 km deep · 60 km away
44. 1.627 km SW of Ferndale, CaliforniaMon, Jun 16, 2:05 PM PDT · 16909 days ago · 20 km deep · 60 km away
45. 2.313 km ENE of Hydesville, CaliforniaWed, Jun 18, 1:32 AM PDT · 16908 days ago · 22 km deep · 58 km away
46. 1.721 km WSW of Weott, CaliforniaWed, Jun 18, 2:26 AM PDT · 16908 days ago · -1 km deep · 82 km away
47. 2.5near the coast of Northern CaliforniaWed, Jun 18, 6:09 PM PDT · 16907 days ago · 47 km deep · 75 km away
48. 3.841 km WSW of Ferndale, CaliforniaFri, Jun 20, 5:42 PM PDT · 16905 days ago · 24 km deep · 59 km away
49. 1.831 km WSW of Ferndale, CaliforniaFri, Jun 20, 10:01 PM PDT · 16905 days ago · 26 km deep · 54 km away
50. 1.940 km SW of Ferndale, CaliforniaSat, Jun 21, 12:17 AM PDT · 16905 days ago · 24 km deep · 71 km away
51. 2.196 km WSW of Ferndale, CaliforniaSat, Jun 21, 8:21 AM PDT · 16905 days ago · 4 km deep · 97 km away
52. 2.916 km SSW of Ferndale, CaliforniaSat, Jun 21, 8:30 PM PDT · 16904 days ago · 27 km deep · 58 km away
53. 1.619 km WNW of Indianola, CaliforniaSun, Jun 22, 10:23 AM PDT · 16903 days ago · 21 km deep · 20 km away
54. 1.76 km WSW of Redcrest, CaliforniaSun, Jun 22, 7:52 PM PDT · 16903 days ago · 29 km deep · 73 km away
55. 1.721 km NNE of Redcrest, CaliforniaMon, Jun 23, 12:48 AM PDT · 16903 days ago · 24 km deep · 70 km away
56. 1.615 km W of Willow Creek, CaliforniaMon, Jun 23, 3:52 AM PDT · 16903 days ago · 23 km deep · 57 km away
57. 2.119 km WNW of Hyampom, CaliforniaMon, Jun 23, 4:00 PM PDT · 16902 days ago · 25 km deep · 75 km away
58. 2.026 km SSW of Ferndale, CaliforniaTue, Jun 24, 9:28 AM PDT · 16901 days ago · 20 km deep · 63 km away
59. 1.870 km WNW of Samoa, CaliforniaTue, Jun 24, 7:12 PM PDT · 16901 days ago · 5 km deep · 41 km away
60. 1.626 km SW of Ferndale, CaliforniaThu, Jun 26, 8:41 PM PDT · 16899 days ago · 19 km deep · 59 km away

The first 60 of 85.

Before

1. 2.339 km WSW of Ferndale, CaliforniaTue, May 20, 1:01 PM PDT · 16936 days ago · 26 km deep · 60 km away
2. 2.079 km WNW of Samoa, CaliforniaMon, May 19, 7:59 PM PDT · 16937 days ago · 4 km deep · 51 km away
3. 1.81 km SE of Myrtletown, CaliforniaMon, May 19, 6:17 PM PDT · 16937 days ago · 10 km deep · 37 km away
4. 1.61 km SSE of Myrtletown, CaliforniaMon, May 19, 5:05 AM PDT · 16938 days ago · 9 km deep · 36 km away
5. 1.522 km SW of Ferndale, CaliforniaMon, May 19, 4:52 AM PDT · 16938 days ago · 23 km deep · 55 km away
6. 1.533 km SW of Ferndale, CaliforniaMon, May 19, 4:47 AM PDT · 16938 days ago · 31 km deep · 62 km away
7. 1.710 km NW of Manila, CaliforniaSat, May 17, 7:01 AM PDT · 16940 days ago · 30 km deep · 20 km away
8. 2.732 km SW of Scotia, CaliforniaFri, May 16, 10:55 PM PDT · 16940 days ago · 22 km deep · 73 km away
9. 2.010 km E of Hydesville, CaliforniaFri, May 16, 4:15 PM PDT · 16940 days ago · 22 km deep · 61 km away
10. 1.99 km E of Hydesville, CaliforniaFri, May 16, 4:14 PM PDT · 16940 days ago · 20 km deep · 60 km away
11. 1.829 km SW of Ferndale, CaliforniaFri, May 16, 2:23 PM PDT · 16940 days ago · 27 km deep · 60 km away
12. 1.623 km SW of Ferndale, CaliforniaFri, May 16, 11:30 AM PDT · 16940 days ago · 23 km deep · 56 km away
13. 1.72 km SSW of Bayview, CaliforniaThu, May 15, 11:16 AM PDT · 16941 days ago · 18 km deep · 32 km away
14. 1.85 km NE of Myers Flat, CaliforniaWed, May 14, 5:23 AM PDT · 16943 days ago · 5 km deep · 89 km away
15. 2.029 km SSW of Ferndale, CaliforniaTue, May 13, 1:08 PM PDT · 16943 days ago · 19 km deep · 68 km away
16. 1.925 km SW of Ferndale, CaliforniaMon, May 12, 6:43 AM PDT · 16945 days ago · 18 km deep · 60 km away
17. 1.87 km N of Mad River, CaliforniaFri, May 9, 10:16 PM PDT · 16947 days ago · 22 km deep · 94 km away
18. 1.631 km WNW of Samoa, CaliforniaWed, May 7, 7:00 PM PDT · 16949 days ago · 18 km deep · 3 km away
19. 3.028 km W of Samoa, CaliforniaWed, May 7, 5:55 AM PDT · 16950 days ago · 22 km deep · 10 km away
20. 1.57 km N of Mad River, CaliforniaTue, May 6, 7:20 PM PDT · 16950 days ago · 23 km deep · 95 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1052956. Read Sat, Oct 3, 2026, 3:42 AM UTC.