M3.9 earthquake 85 km WNW of Samoa, California

Magnitude

3.9 (ml), minor

Local time

Sun, May 27, 1979, 9:12 PM PDT

UTC

1979-05-28 04:12:12 UTC

Depth

3.0 km (1.9 mi), shallow

Epicenter

41.008° N, 125.165° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 4.3 km horizontally, 10.1 km in depth

Depth from

From location

Station coverage gap

301°, poorly surrounded by stations

Stations used

23

• Manila, CaliforniaPopulation 784. Forecast86 kmWNW
• Eureka, CaliforniaPopulation 27,017. Forecast87 kmWNW
• Chico, CaliforniaPopulation 121,345. Forecast316 kmWNW

After

1. 2.292 km WSW of Ferndale, CaliforniaMon, May 28, 4:52 PM PDT · 17292 days ago · 5 km deep · 68 km away
2. 1.741 km WNW of Samoa, CaliforniaTue, May 29, 5:54 AM PDT · 17291 days ago · 14 km deep · 44 km away
3. 2.224 km WNW of Indianola, CaliforniaTue, May 29, 10:36 AM PDT · 17291 days ago · 23 km deep · 61 km away
4. 1.941 km SW of Ferndale, CaliforniaThu, May 31, 1:14 AM PDT · 17290 days ago · 0 km deep · 96 km away
5. 1.843 km WNW of Samoa, CaliforniaSat, Jun 2, 1:22 PM PDT · 17287 days ago · 23 km deep · 42 km away
6. 3.227 km SSW of Ferndale, CaliforniaSat, Jun 2, 9:07 PM PDT · 17287 days ago · 18 km deep · 96 km away
7. 2.178 km WNW of Samoa, CaliforniaSat, Jun 2, 10:16 PM PDT · 17287 days ago · 3 km deep · 8 km away
8. 1.626 km W of Indianola, CaliforniaSun, Jun 3, 1:01 AM PDT · 17287 days ago · 22 km deep · 63 km away
9. 2.764 km WNW of Indianola, CaliforniaMon, Jun 4, 8:55 PM PDT · 17285 days ago · 13 km deep · 23 km away
10. 1.63 km NW of Fortuna, CaliforniaTue, Jun 5, 9:21 PM PDT · 17284 days ago · 22 km deep · 93 km away
11. 1.647 km SW of Ferndale, CaliforniaWed, Jun 6, 7:04 AM PDT · 17283 days ago · 12 km deep · 86 km away
12. 2.67 km E of Pine Hills, CaliforniaThu, Jun 7, 10:45 AM PDT · 17282 days ago · 24 km deep · 98 km away
13. 1.913 km SW of Ferndale, CaliforniaFri, Jun 8, 3:18 AM PDT · 17281 days ago · 23 km deep · 86 km away
14. 1.733 km SSW of Ferndale, CaliforniaFri, Jun 8, 5:45 AM PDT · 17281 days ago · 18 km deep · 96 km away
15. 1.735 km SSW of Ferndale, CaliforniaFri, Jun 8, 5:21 PM PDT · 17281 days ago · 21 km deep · 99 km away
16. 2.070 km WSW of Ferndale, CaliforniaSat, Jun 9, 12:00 AM PDT · 17281 days ago · 5 km deep · 68 km away
17. 2.237 km SW of Ferndale, CaliforniaSat, Jun 9, 12:43 AM PDT · 17281 days ago · 31 km deep · 95 km away
18. 1.930 km SW of Ferndale, CaliforniaSat, Jun 9, 10:37 AM PDT · 17280 days ago · 27 km deep · 86 km away
19. 1.837 km W of Ferndale, CaliforniaSat, Jun 9, 6:01 PM PDT · 17280 days ago · 21 km deep · 68 km away
20. 1.635 km SW of Ferndale, CaliforniaSat, Jun 9, 6:12 PM PDT · 17280 days ago · 20 km deep · 94 km away
21. 1.729 km SW of Ferndale, CaliforniaSun, Jun 10, 12:05 PM PDT · 17279 days ago · 18 km deep · 88 km away
22. 1.732 km WSW of Ferndale, CaliforniaSun, Jun 10, 10:19 PM PDT · 17279 days ago · 27 km deep · 82 km away
23. 1.65 km WNW of Loleta, CaliforniaSun, Jun 10, 11:35 PM PDT · 17279 days ago · 22 km deep · 84 km away
24. 1.836 km WSW of Ferndale, CaliforniaTue, Jun 12, 11:14 AM PDT · 17277 days ago · 25 km deep · 77 km away
25. 2.864 km WSW of Ferndale, CaliforniaTue, Jun 12, 5:10 PM PDT · 17277 days ago · 21 km deep · 62 km away
26. 1.927 km SW of Ferndale, CaliforniaTue, Jun 12, 7:43 PM PDT · 17277 days ago · 24 km deep · 92 km away
27. 3.136 km SW of Ferndale, CaliforniaWed, Jun 13, 5:25 PM PDT · 17276 days ago · 23 km deep · 92 km away
28. 1.69 km SW of Trinidad, CaliforniaThu, Jun 14, 4:50 AM PDT · 17275 days ago · 21 km deep · 80 km away
29. 2.050 km SW of Ferndale, CaliforniaThu, Jun 14, 11:19 AM PDT · 17275 days ago · 15 km deep · 87 km away
30. 1.935 km SW of Ferndale, CaliforniaThu, Jun 14, 5:07 PM PDT · 17275 days ago · 27 km deep · 94 km away
31. 2.829 km SW of Ferndale, CaliforniaThu, Jun 14, 10:56 PM PDT · 17275 days ago · 27 km deep · 89 km away
32. 1.820 km WNW of Indianola, CaliforniaFri, Jun 15, 2:26 AM PDT · 17274 days ago · 23 km deep · 66 km away
33. 2.119 km SSW of Ferndale, CaliforniaFri, Jun 15, 3:36 PM PDT · 17274 days ago · 29 km deep · 97 km away
34. 2.689 km WSW of Ferndale, CaliforniaSun, Jun 17, 11:43 AM PDT · 17272 days ago · 6 km deep · 71 km away
35. 2.4100 km W of Ferndale, CaliforniaSun, Jun 17, 1:11 PM PDT · 17272 days ago · 27 km deep · 63 km away
36. 1.721 km SW of Ferndale, CaliforniaMon, Jun 18, 2:21 PM PDT · 17271 days ago · 20 km deep · 84 km away
37. 1.742 km SW of Ferndale, CaliforniaMon, Jun 18, 3:07 PM PDT · 17271 days ago · 22 km deep · 87 km away
38. 2.216 km S of Ferndale, CaliforniaTue, Jun 19, 12:45 AM PDT · 17271 days ago · 28 km deep · 98 km away
39. 1.616 km S of Ferndale, CaliforniaTue, Jun 19, 12:54 AM PDT · 17271 days ago · 28 km deep · 98 km away
40. 1.831 km SW of Ferndale, CaliforniaTue, Jun 19, 5:27 AM PDT · 17270 days ago · 17 km deep · 83 km away
41. 2.436 km WSW of Ferndale, CaliforniaTue, Jun 19, 6:15 PM PDT · 17270 days ago · 21 km deep · 69 km away
42. 2.137 km SW of Ferndale, CaliforniaWed, Jun 20, 4:35 PM PDT · 17269 days ago · 23 km deep · 93 km away
43. 2.939 km SW of Ferndale, CaliforniaWed, Jun 20, 7:30 PM PDT · 17269 days ago · 23 km deep · 88 km away
44. 1.967 km WNW of Indianola, CaliforniaWed, Jun 20, 9:37 PM PDT · 17269 days ago · 2 km deep · 25 km away
45. 2.294 km WSW of Ferndale, CaliforniaThu, Jun 21, 6:39 AM PDT · 17268 days ago · 3 km deep · 73 km away
46. 1.921 km SW of Ferndale, CaliforniaThu, Jun 21, 5:54 PM PDT · 17268 days ago · 20 km deep · 84 km away
47. 1.934 km SSW of Ferndale, CaliforniaFri, Jun 22, 7:11 AM PDT · 17267 days ago · 22 km deep · 99 km away
48. 1.633 km SSW of Ferndale, CaliforniaSat, Jun 23, 12:33 AM PDT · 17267 days ago · 26 km deep · 96 km away
49. 1.657 km WSW of Ferndale, CaliforniaSat, Jun 23, 1:29 AM PDT · 17266 days ago · 5 km deep · 73 km away
50. 1.82 km WSW of Loleta, CaliforniaSun, Jun 24, 5:53 AM PDT · 17265 days ago · 18 km deep · 87 km away
51. 1.7near the coast of Northern CaliforniaTue, Jun 26, 2:49 AM PDT · 17263 days ago · 22 km deep · 76 km away
52. 1.754 km W of Ferndale, CaliforniaTue, Jun 26, 6:57 PM PDT · 17263 days ago · 0 km deep · 49 km away
53. 1.623 km WSW of Ferndale, CaliforniaFri, Jun 29, 6:56 AM PDT · 17260 days ago · 20 km deep · 79 km away
54. 2.32 km NNE of Indianola, CaliforniaFri, Jun 29, 8:53 PM PDT · 17260 days ago · 21 km deep · 86 km away
55. 2.3141 km W of Ferndale, CaliforniaSat, Jun 30, 7:02 AM PDT · 17259 days ago · 4 km deep · 87 km away
56. 1.633 km SSW of Ferndale, CaliforniaSat, Jun 30, 12:33 PM PDT · 17259 days ago · 9 km deep · 100 km away
57. 1.816 km SW of Ferndale, CaliforniaSun, Jul 1, 5:25 AM PDT · 17258 days ago · 28 km deep · 90 km away
58. 1.824 km SW of Ferndale, CaliforniaMon, Jul 2, 7:52 PM PDT · 17257 days ago · 27 km deep · 88 km away
59. 1.724 km SW of Ferndale, CaliforniaMon, Jul 2, 8:58 PM PDT · 17257 days ago · 27 km deep · 88 km away
60. 1.649 km WSW of Ferndale, CaliforniaThu, Jul 5, 12:09 PM PDT · 17254 days ago · 15 km deep · 83 km away

The first 60 of 94.

Before

1. 1.973 km WNW of Samoa, CaliforniaSun, May 27, 8:52 PM PDT · 17293 days ago · 5 km deep · 12 km away
2. 2.865 km W of Ferndale, CaliforniaSun, May 27, 11:17 AM PDT · 17293 days ago · 31 km deep · 44 km away
3. 1.839 km SW of Ferndale, CaliforniaSat, May 26, 3:30 AM PDT · 17294 days ago · 21 km deep · 94 km away
4. 1.635 km SSW of Ferndale, CaliforniaSat, May 26, 12:17 AM PDT · 17295 days ago · 23 km deep · 98 km away
5. 1.836 km SSW of Ferndale, CaliforniaFri, May 25, 9:25 PM PDT · 17295 days ago · 22 km deep · 97 km away
6. 1.88 km WSW of Trinidad, CaliforniaFri, May 25, 9:07 PM PDT · 17295 days ago · 20 km deep · 78 km away
7. 1.850 km WNW of Samoa, CaliforniaFri, May 25, 12:31 PM PDT · 17295 days ago · 13 km deep · 34 km away
8. 1.970 km W of Indianola, CaliforniaFri, May 25, 8:42 AM PDT · 17295 days ago · 6 km deep · 27 km away
9. 1.64 km NW of Ferndale, CaliforniaWed, May 23, 9:56 PM PDT · 17297 days ago · 18 km deep · 86 km away
10. 1.67 km W of Rio Dell, CaliforniaWed, May 23, 6:11 PM PDT · 17297 days ago · 17 km deep · 100 km away
11. 2.135 km SSW of Ferndale, CaliforniaTue, May 22, 12:44 AM PDT · 17299 days ago · 25 km deep · 97 km away
12. 2.233 km WSW of Ferndale, CaliforniaMon, May 21, 1:42 PM PDT · 17299 days ago · 21 km deep · 71 km away
13. 1.836 km SW of Ferndale, CaliforniaSun, May 20, 7:22 PM PDT · 17300 days ago · 27 km deep · 95 km away
14. 1.938 km SW of Ferndale, CaliforniaSun, May 20, 1:25 PM PDT · 17300 days ago · 20 km deep · 95 km away
15. 1.77 km W of Rio Dell, CaliforniaSat, May 19, 12:59 PM PDT · 17301 days ago · 18 km deep · 100 km away
16. 1.67 km W of Rio Dell, CaliforniaSat, May 19, 10:03 AM PDT · 17301 days ago · 17 km deep · 99 km away
17. 1.68 km W of Rio Dell, CaliforniaFri, May 18, 3:44 PM PDT · 17302 days ago · 18 km deep · 99 km away
18. 1.740 km WSW of Ferndale, CaliforniaFri, May 18, 10:25 AM PDT · 17302 days ago · 14 km deep · 76 km away
19. 3.239 km SW of Ferndale, CaliforniaFri, May 18, 12:31 AM PDT · 17303 days ago · 23 km deep · 91 km away
20. 2.938 km SW of Ferndale, CaliforniaThu, May 17, 8:18 PM PDT · 17303 days ago · 23 km deep · 91 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1045953 (also filed as usp00010ym). Read Wed, Sep 30, 2026, 7:58 PM UTC.