M1.6 earthquake 17 km SW of Ferndale, California

Magnitude

1.6 (md), micro

Local time

Tue, Apr 4, 1978, 4:09 PM PST

UTC

1978-04-05 00:09:10 UTC

Depth

23.3 km (14.5 mi), shallow

Epicenter

40.488° N, 124.430° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.8 km horizontally, 0.8 km in depth

Depth from

From location

Station coverage gap

259°, poorly surrounded by stations

Stations used

8

• Ferndale, CaliforniaPopulation 1,369. Forecast17 kmSW
• Fortuna, CaliforniaPopulation 12,000. Forecast26 kmWSW
• Chico, CaliforniaPopulation 121,345. Forecast236 kmWNW

After

1. 2.518 km WSW of Ferndale, CaliforniaTue, Apr 4, 5:36 PM PST · 17709 days ago · 22 km deep · 2 km away
2. 2.863 km W of Ferndale, CaliforniaTue, Apr 4, 5:49 PM PST · 17709 days ago · 11 km deep · 53 km away
3. 1.920 km WSW of Ferndale, CaliforniaTue, Apr 4, 6:59 PM PST · 17709 days ago · 25 km deep · 3 km away
4. 2.710 km S of Ferndale, CaliforniaWed, Apr 5, 1:30 AM PST · 17708 days ago · 12 km deep · 15 km away
5. 1.97 km SSW of Scotia, CaliforniaWed, Apr 5, 6:13 AM PST · 17708 days ago · 23 km deep · 26 km away
6. 2.18 km WSW of Scotia, CaliforniaWed, Apr 5, 4:14 PM PST · 17708 days ago · 2 km deep · 20 km away
7. 2.356 km W of Trinidad, CaliforniaThu, Apr 6, 1:59 PM PST · 17707 days ago · -1 km deep · 77 km away
8. 1.916 km SW of Ferndale, CaliforniaSat, Apr 8, 10:18 PM PST · 17705 days ago · 22 km deep · 1 km away
9. 1.527 km WSW of Ferndale, CaliforniaMon, Apr 10, 1:13 AM PST · 17703 days ago · 23 km deep · 11 km away
10. 1.610 km W of Scotia, CaliforniaMon, Apr 10, 10:31 AM PST · 17703 days ago · 4 km deep · 18 km away
11. 2.030 km WSW of Ferndale, CaliforniaMon, Apr 10, 11:48 PM PST · 17703 days ago · 24 km deep · 14 km away
12. 1.621 km SSW of Ferndale, CaliforniaTue, Apr 11, 12:10 AM PST · 17703 days ago · 22 km deep · 10 km away
13. 1.811 km W of Hyampom, CaliforniaTue, Apr 11, 4:59 PM PST · 17702 days ago · 33 km deep · 73 km away
14. 2.113 km NE of Phillipsville, CaliforniaWed, Apr 12, 12:08 AM PST · 17702 days ago · 22 km deep · 66 km away
15. 2.168 km W of Ferndale, CaliforniaWed, Apr 12, 12:58 AM PST · 17702 days ago · 7 km deep · 54 km away
16. 3.418 km SSW of Scotia, CaliforniaWed, Apr 12, 9:22 AM PST · 17701 days ago · 22 km deep · 25 km away
17. 2.571 km W of Samoa, CaliforniaWed, Apr 12, 9:07 PM PST · 17701 days ago · 6 km deep · 71 km away
18. 2.266 km WNW of Indianola, CaliforniaThu, Apr 13, 12:02 PM PST · 17700 days ago · 8 km deep · 64 km away
19. 1.929 km SW of Scotia, CaliforniaSat, Apr 15, 5:21 AM PST · 17698 days ago · 21 km deep · 22 km away
20. 1.827 km WSW of Ferndale, CaliforniaSat, Apr 15, 11:29 AM PST · 17698 days ago · 25 km deep · 11 km away
21. 1.61 km N of Rio Dell, CaliforniaSat, Apr 15, 2:56 PM PST · 17698 days ago · 3 km deep · 27 km away
22. 1.710 km WSW of Rio Dell, CaliforniaSat, Apr 15, 5:25 PM PST · 17698 days ago · 5 km deep · 17 km away
23. 1.910 km WSW of Rio Dell, CaliforniaSat, Apr 15, 5:45 PM PST · 17698 days ago · 4 km deep · 18 km away
24. 1.626 km WNW of Manila, CaliforniaSat, Apr 15, 9:55 PM PST · 17698 days ago · 19 km deep · 53 km away
25. 1.523 km SSW of Ferndale, CaliforniaSun, Apr 16, 1:44 AM PST · 17697 days ago · 20 km deep · 12 km away
26. 2.929 km WSW of Ferndale, CaliforniaSun, Apr 16, 10:17 AM PST · 17697 days ago · 21 km deep · 15 km away
27. 1.711 km W of Scotia, CaliforniaSun, Apr 16, 5:56 PM PST · 17697 days ago · 7 km deep · 17 km away
28. 1.67 km SSE of Ferndale, CaliforniaSun, Apr 16, 7:26 PM PST · 17697 days ago · 24 km deep · 16 km away
29. 1.927 km SW of Ferndale, CaliforniaMon, Apr 17, 1:10 PM PST · 17696 days ago · 26 km deep · 11 km away
30. 1.623 km SW of Scotia, CaliforniaTue, Apr 18, 4:15 AM PST · 17695 days ago · 15 km deep · 17 km away
31. 1.728 km SSW of Ferndale, CaliforniaTue, Apr 18, 4:45 AM PST · 17695 days ago · 17 km deep · 17 km away
32. 1.521 km SW of Ferndale, CaliforniaTue, Apr 18, 10:45 AM PST · 17695 days ago · 22 km deep · 6 km away
33. 1.544 km WSW of Ferndale, CaliforniaWed, Apr 19, 1:50 AM PST · 17694 days ago · 6 km deep · 27 km away
34. 2.53 km SSW of Westhaven-Moonstone, CaliforniaWed, Apr 19, 9:13 PM PST · 17694 days ago · 13 km deep · 65 km away
35. 2.334 km SW of Ferndale, CaliforniaThu, Apr 20, 12:22 PM PST · 17693 days ago · 21 km deep · 19 km away
36. 3.223 km SW of Ferndale, CaliforniaFri, Apr 21, 7:06 PM PST · 17692 days ago · 21 km deep · 6 km away
37. 2.817 km SW of Ferndale, CaliforniaSat, Apr 22, 4:00 AM PST · 17691 days ago · 22 km deep · 1 km away
38. 2.732 km SW of Ferndale, CaliforniaSat, Apr 22, 10:57 PM PST · 17691 days ago · 21 km deep · 16 km away
39. 1.943 km W of Ferndale, CaliforniaSun, Apr 23, 9:43 PM PST · 17690 days ago · 23 km deep · 34 km away
40. 1.713 km ENE of Hydesville, CaliforniaMon, Apr 24, 12:01 AM PST · 17690 days ago · 20 km deep · 42 km away
41. 1.517 km SSW of Ferndale, CaliforniaMon, Apr 24, 8:20 PM PST · 17689 days ago · 26 km deep · 8 km away
42. 1.515 km SSW of Ferndale, CaliforniaWed, Apr 26, 2:22 AM PST · 17687 days ago · 22 km deep · 12 km away
43. 3.110 km SSW of Ferndale, CaliforniaWed, Apr 26, 11:01 AM PST · 17687 days ago · 19 km deep · 12 km away
44. 1.710 km S of Ferndale, CaliforniaWed, Apr 26, 11:08 AM PST · 17687 days ago · 19 km deep · 12 km away
45. 2.065 km W of Ferndale, CaliforniaWed, Apr 26, 7:47 PM PST · 17687 days ago · 6 km deep · 52 km away
46. 1.710 km S of Ferndale, CaliforniaWed, Apr 26, 8:40 PM PST · 17687 days ago · 18 km deep · 12 km away
47. 2.357 km W of Trinidad, CaliforniaWed, Apr 26, 10:36 PM PST · 17687 days ago · 7 km deep · 74 km away
48. 1.531 km WSW of Ferndale, CaliforniaThu, Apr 27, 4:20 AM PST · 17686 days ago · 25 km deep · 15 km away
49. 2.710 km S of Ferndale, CaliforniaThu, Apr 27, 5:27 AM PST · 17686 days ago · 19 km deep · 12 km away
50. 2.574 km W of Ferndale, CaliforniaThu, Apr 27, 2:59 PM PST · 17686 days ago · 1 km deep · 59 km away
51. 2.558 km W of Ferndale, CaliforniaThu, Apr 27, 5:11 PM PST · 17686 days ago · 30 km deep · 46 km away
52. 2.159 km WSW of Ferndale, CaliforniaThu, Apr 27, 9:03 PM PST · 17686 days ago · 11 km deep · 44 km away
53. 1.929 km SW of Ferndale, CaliforniaThu, Apr 27, 10:17 PM PST · 17686 days ago · 27 km deep · 13 km away
54. 2.228 km SW of Ferndale, CaliforniaThu, Apr 27, 10:19 PM PST · 17686 days ago · 27 km deep · 12 km away
55. 2.333 km SW of Ferndale, CaliforniaFri, Apr 28, 12:40 AM PST · 17686 days ago · 23 km deep · 17 km away
56. 2.233 km SSW of Ferndale, CaliforniaFri, Apr 28, 2:32 PM PST · 17685 days ago · 21 km deep · 19 km away
57. 1.827 km WSW of Ferndale, CaliforniaSat, Apr 29, 9:38 AM PST · 17684 days ago · 24 km deep · 10 km away
58. 1.535 km SSW of Ferndale, CaliforniaSat, Apr 29, 11:39 PM PST · 17684 days ago · 25 km deep · 21 km away
59. 1.619 km SSW of Ferndale, CaliforniaTue, May 2, 9:46 PM PDT · 17681 days ago · 23 km deep · 9 km away
60. 4.260 km W of Big Lagoon, CaliforniaFri, May 5, 12:49 AM PDT · 17679 days ago · 0 km deep · 85 km away

The first 60 of 103.

Before

1. 1.918 km SW of Ferndale, CaliforniaTue, Apr 4, 4:05 PM PST · 17709 days ago · 24 km deep · 2 km away
2. 1.715 km WSW of Ferndale, CaliforniaTue, Apr 4, 3:44 PM PST · 17709 days ago · 22 km deep · 1 km away
3. 3.617 km WSW of Ferndale, CaliforniaTue, Apr 4, 3:38 PM PST · 17709 days ago · 22 km deep · 1 km away
4. 2.518 km SSW of Ferndale, CaliforniaTue, Apr 4, 2:44 AM PST · 17709 days ago · 22 km deep · 10 km away
5. 2.529 km SW of Ferndale, CaliforniaMon, Apr 3, 12:22 AM PST · 17711 days ago · 20 km deep · 13 km away
6. 2.639 km SW of Ferndale, CaliforniaSun, Apr 2, 1:47 PM PST · 17711 days ago · 16 km deep · 24 km away
7. 1.91 km WNW of Fields Landing, CaliforniaSun, Apr 2, 8:37 AM PST · 17711 days ago · 8 km deep · 32 km away
8. 2.30 km W of Fields Landing, CaliforniaSun, Apr 2, 3:55 AM PST · 17711 days ago · 9 km deep · 32 km away
9. 2.041 km SW of Ferndale, CaliforniaSun, Apr 2, 1:06 AM PST · 17711 days ago · 16 km deep · 24 km away
10. 1.9near the coast of Northern CaliforniaSat, Apr 1, 2:38 PM PST · 17712 days ago · 26 km deep · 19 km away
11. 2.5near the coast of Northern CaliforniaFri, Mar 31, 4:32 PM PST · 17713 days ago · 16 km deep · 51 km away
12. 1.710 km W of Scotia, CaliforniaThu, Mar 30, 6:25 AM PST · 17714 days ago · 7 km deep · 17 km away
13. 1.912 km SW of Ferndale, CaliforniaThu, Mar 30, 6:17 AM PST · 17714 days ago · 24 km deep · 5 km away
14. 2.710 km WSW of Scotia, CaliforniaThu, Mar 30, 1:48 AM PST · 17714 days ago · 8 km deep · 18 km away
15. 2.032 km WSW of Ferndale, CaliforniaMon, Mar 27, 10:02 PM PST · 17717 days ago · 23 km deep · 16 km away
16. 1.86 km ENE of Blue Lake, CaliforniaMon, Mar 27, 5:07 PM PST · 17717 days ago · 27 km deep · 64 km away
17. 1.615 km WSW of Ferndale, CaliforniaMon, Mar 27, 3:18 PM PST · 17717 days ago · 23 km deep · 5 km away
18. 2.710 km WSW of Rio Dell, CaliforniaMon, Mar 27, 5:06 AM PST · 17717 days ago · 6 km deep · 18 km away
19. 1.89 km WSW of Rio Dell, CaliforniaMon, Mar 27, 1:25 AM PST · 17717 days ago · 4 km deep · 18 km away
20. 1.69 km WSW of Rio Dell, CaliforniaMon, Mar 27, 1:02 AM PST · 17718 days ago · 2 km deep · 18 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1039713. Read Mon, Sep 28, 2026, 8:33 PM UTC.