M3.5 earthquake 50 km WSW of Ferndale, California

Magnitude

3.5 (Md, duration), minor

Magnitude from

Northern California Seismic System

Local time

Thu, Sep 27, 1979, 12:54 AM PDT

UTC

1979-09-27 07:54:44 UTC

Depth

16.3 km (10.1 mi), shallow

Epicenter

40.340° N, 124.767° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 3.9 km horizontally, 1.9 km in depth

Depth from

From location

Station coverage gap

282°, poorly surrounded by stations

Stations used

14

• Ferndale, CaliforniaPopulation 1,369. Forecast50 kmWSW
• Fortuna, CaliforniaPopulation 12,000. Forecast59 kmWSW
• Chico, CaliforniaPopulation 121,345. Forecast259 kmWNW

After

1. 1.520 km WSW of Weott, CaliforniaThu, Sep 27, 2:20 AM PDT · 17171 days ago · -1 km deep · 54 km away
2. 1.937 km WSW of Ferndale, CaliforniaThu, Sep 27, 8:09 AM PDT · 17171 days ago · 24 km deep · 15 km away
3. 1.68 km SE of Blue Lake, CaliforniaThu, Sep 27, 11:26 AM PDT · 17170 days ago · 1 km deep · 91 km away
4. 3.435 km SW of Ferndale, CaliforniaThu, Sep 27, 3:32 PM PDT · 17170 days ago · 24 km deep · 23 km away
5. 2.172 km WSW of Ferndale, CaliforniaThu, Sep 27, 8:16 PM PDT · 17170 days ago · 4 km deep · 26 km away
6. 2.316 km SSW of Ferndale, CaliforniaFri, Sep 28, 2:04 PM PDT · 17169 days ago · 26 km deep · 37 km away
7. 3.775 km W of Ferndale, CaliforniaFri, Sep 28, 7:22 PM PDT · 17169 days ago · 6 km deep · 36 km away
8. 2.4133 km W of Ferndale, CaliforniaFri, Sep 28, 8:13 PM PDT · 17169 days ago · 4 km deep · 90 km away
9. 1.920 km W of Ferndale, CaliforniaFri, Sep 28, 9:23 PM PDT · 17169 days ago · 21 km deep · 32 km away
10. 2.487 km WSW of Ferndale, CaliforniaSat, Sep 29, 7:59 PM PDT · 17168 days ago · 4 km deep · 38 km away
11. 2.3111 km W of Indianola, CaliforniaMon, Oct 1, 2:52 PM PDT · 17166 days ago · 4 km deep · 87 km away
12. 2.714 km WNW of Fields Landing, CaliforniaMon, Oct 1, 5:58 PM PDT · 17166 days ago · 24 km deep · 57 km away
13. 2.410 km NNW of Alderpoint, CaliforniaMon, Oct 1, 9:31 PM PDT · 17166 days ago · 30 km deep · 93 km away
14. 2.719 km W of Samoa, CaliforniaTue, Oct 2, 9:51 PM PDT · 17165 days ago · 19 km deep · 60 km away
15. 3.136 km SW of Ferndale, CaliforniaTue, Oct 2, 11:40 PM PDT · 17165 days ago · 24 km deep · 22 km away
16. 1.648 km SW of Ferndale, CaliforniaWed, Oct 3, 5:16 AM PDT · 17165 days ago · 24 km deep · 5 km away
17. 2.330 km SW of Scotia, CaliforniaWed, Oct 3, 8:45 AM PDT · 17165 days ago · 14 km deep · 36 km away
18. 2.187 km W of Ferndale, CaliforniaWed, Oct 3, 7:46 PM PDT · 17164 days ago · 5 km deep · 49 km away
19. 2.5136 km W of Ferndale, CaliforniaThu, Oct 4, 10:43 AM PDT · 17163 days ago · 4 km deep · 95 km away
20. 2.526 km SSW of Ferndale, CaliforniaFri, Oct 5, 1:21 AM PDT · 17163 days ago · 19 km deep · 30 km away
21. 2.399 km WSW of Ferndale, CaliforniaSat, Oct 6, 9:58 PM PDT · 17161 days ago · 4 km deep · 55 km away
22. 1.722 km WNW of Ferndale, CaliforniaSun, Oct 7, 6:21 AM PDT · 17161 days ago · 16 km deep · 40 km away
23. 2.2near the coast of Northern CaliforniaSun, Oct 7, 1:52 PM PDT · 17160 days ago · 5 km deep · 81 km away
24. 1.732 km W of Ferndale, CaliforniaSun, Oct 7, 5:41 PM PDT · 17160 days ago · 25 km deep · 26 km away
25. 2.0near the coast of Northern CaliforniaMon, Oct 8, 4:17 PM PDT · 17159 days ago · 19 km deep · 52 km away
26. 2.72 km NE of Rio Dell, CaliforniaThu, Oct 11, 6:20 AM PDT · 17157 days ago · 25 km deep · 60 km away
27. 1.964 km W of Trinidad, CaliforniaThu, Oct 11, 11:04 PM PDT · 17156 days ago · 2 km deep · 81 km away
28. 2.424 km WNW of Samoa, CaliforniaFri, Oct 12, 7:39 AM PDT · 17156 days ago · 18 km deep · 64 km away
29. 3.033 km SSW of Ferndale, CaliforniaFri, Oct 12, 9:18 AM PDT · 17156 days ago · 23 km deep · 28 km away
30. 1.653 km W of Ferndale, CaliforniaFri, Oct 12, 8:55 PM PDT · 17155 days ago · 9 km deep · 29 km away
31. 1.769 km WNW of Samoa, CaliforniaSat, Oct 13, 1:25 AM PDT · 17155 days ago · 4 km deep · 76 km away
32. 1.730 km SW of Scotia, CaliforniaSat, Oct 13, 5:54 PM PDT · 17154 days ago · 23 km deep · 36 km away
33. 2.339 km WSW of Ferndale, CaliforniaSun, Oct 14, 4:32 PM PDT · 17153 days ago · 27 km deep · 11 km away
34. 2.9110 km WSW of Ferndale, CaliforniaSun, Oct 14, 7:50 PM PDT · 17153 days ago · 4 km deep · 65 km away
35. 1.626 km WSW of Ferndale, CaliforniaMon, Oct 15, 1:42 AM PDT · 17153 days ago · 24 km deep · 24 km away
36. 1.7near the coast of Northern CaliforniaMon, Oct 15, 11:49 AM PDT · 17152 days ago · 20 km deep · 65 km away
37. 1.627 km SE of Blue Lake, CaliforniaMon, Oct 15, 2:15 PM PDT · 17152 days ago · 22 km deep · 92 km away
38. 2.528 km SW of Ferndale, CaliforniaMon, Oct 15, 11:37 PM PDT · 17152 days ago · 28 km deep · 24 km away
39. 1.5Northern CaliforniaTue, Oct 16, 7:14 AM PDT · 17152 days ago · 1 km deep · 84 km away
40. 3.1101 km W of Ferndale, CaliforniaTue, Oct 16, 9:03 AM PDT · 17152 days ago · 4 km deep · 59 km away
41. 2.089 km W of Big Lagoon, CaliforniaTue, Oct 16, 11:20 AM PDT · 17151 days ago · 5 km deep · 99 km away
42. 2.835 km SSW of Ferndale, CaliforniaTue, Oct 16, 6:55 PM PDT · 17151 days ago · 22 km deep · 24 km away
43. 2.198 km WSW of Ferndale, CaliforniaTue, Oct 16, 8:17 PM PDT · 17151 days ago · 4 km deep · 55 km away
44. 1.815 km SW of Mad River, CaliforniaWed, Oct 17, 1:04 AM PDT · 17151 days ago · 20 km deep · 98 km away
45. 2.116 km ESE of Pine Hills, CaliforniaWed, Oct 17, 10:04 AM PDT · 17150 days ago · 22 km deep · 77 km away
46. 3.05 km N of Fortuna, CaliforniaWed, Oct 17, 4:38 PM PDT · 17150 days ago · 23 km deep · 62 km away
47. 1.812 km WSW of Redcrest, CaliforniaSat, Oct 20, 12:04 PM PDT · 17147 days ago · 29 km deep · 58 km away
48. 3.664 km WSW of Ferndale, CaliforniaSun, Oct 21, 4:34 AM PDT · 17147 days ago · 28 km deep · 21 km away
49. 1.925 km SSW of Ferndale, CaliforniaSun, Oct 21, 7:10 PM PDT · 17146 days ago · 16 km deep · 35 km away
50. 4.030 km S of Shelter Cove, CaliforniaTue, Oct 23, 3:55 AM PDT · 17145 days ago · 6 km deep · 88 km away
51. 1.928 km WSW of Ferndale, CaliforniaTue, Oct 23, 9:05 PM PDT · 17144 days ago · 22 km deep · 22 km away
52. 2.238 km WSW of Ferndale, CaliforniaTue, Oct 23, 11:07 PM PDT · 17144 days ago · 23 km deep · 17 km away
53. 1.918 km W of Samoa, CaliforniaWed, Oct 24, 5:54 AM PDT · 17144 days ago · 24 km deep · 62 km away
54. 2.36 km SW of Scotia, CaliforniaWed, Oct 24, 6:23 AM PDT · 17144 days ago · 22 km deep · 53 km away
55. 2.630 km WSW of Ferndale, CaliforniaWed, Oct 24, 8:19 AM PDT · 17144 days ago · 22 km deep · 21 km away
56. 4.534 km WSW of Ferndale, CaliforniaWed, Oct 24, 8:23 AM PDT · 17144 days ago · 26 km deep · 17 km away
57. 2.534 km WSW of Ferndale, CaliforniaWed, Oct 24, 8:39 AM PDT · 17144 days ago · 26 km deep · 21 km away
58. 2.830 km WNW of Ferndale, CaliforniaWed, Oct 24, 8:43 AM PDT · 17144 days ago · 23 km deep · 37 km away
59. 1.934 km WSW of Ferndale, CaliforniaWed, Oct 24, 8:55 AM PDT · 17144 days ago · 28 km deep · 21 km away
60. 1.732 km SW of Ferndale, CaliforniaWed, Oct 24, 9:02 AM PDT · 17144 days ago · 27 km deep · 18 km away

The first 60 of 123.

Before

1. 1.949 km WNW of Samoa, CaliforniaWed, Sep 26, 11:58 AM PDT · 17171 days ago · -1 km deep · 73 km away
2. 1.633 km W of Ferndale, CaliforniaTue, Sep 25, 12:53 PM PDT · 17172 days ago · 21 km deep · 23 km away
3. 3.8134 km W of Ferndale, CaliforniaMon, Sep 24, 1:07 AM PDT · 17174 days ago · 4 km deep · 97 km away
4. 2.076 km WSW of Ferndale, CaliforniaSun, Sep 23, 9:11 PM PDT · 17174 days ago · 23 km deep · 30 km away
5. 1.61 km SSE of Benbow, CaliforniaSun, Sep 23, 3:34 AM PDT · 17175 days ago · 13 km deep · 90 km away
6. 1.852 km WSW of Ferndale, CaliforniaSat, Sep 22, 7:14 AM PDT · 17176 days ago · 15 km deep · 4 km away
7. 1.929 km SSW of Ferndale, CaliforniaFri, Sep 21, 3:35 AM PDT · 17177 days ago · 19 km deep · 26 km away
8. 3.6118 km W of Ferndale, CaliforniaFri, Sep 21, 1:00 AM PDT · 17177 days ago · 4 km deep · 77 km away
9. 1.59 km ENE of Benbow, CaliforniaWed, Sep 19, 9:52 PM PDT · 17178 days ago · 11 km deep · 97 km away
10. 2.687 km WNW of Samoa, CaliforniaTue, Sep 18, 5:46 PM PDT · 17179 days ago · 5 km deep · 80 km away
11. 2.672 km WNW of Indianola, CaliforniaSun, Sep 16, 1:51 PM PDT · 17181 days ago · 12 km deep · 61 km away
12. 2.110 km WSW of Rio Dell, CaliforniaSat, Sep 15, 7:32 PM PDT · 17182 days ago · 17 km deep · 48 km away
13. 2.46 km ESE of Indianola, CaliforniaSat, Sep 15, 5:18 PM PDT · 17182 days ago · 25 km deep · 82 km away
14. 1.529 km SW of Ferndale, CaliforniaFri, Sep 14, 4:42 PM PDT · 17183 days ago · 27 km deep · 25 km away
15. 2.567 km WNW of Samoa, CaliforniaWed, Sep 12, 12:12 AM PDT · 17186 days ago · 36 km deep · 71 km away
16. 1.937 km SW of Ferndale, CaliforniaMon, Sep 10, 5:50 AM PDT · 17188 days ago · 21 km deep · 20 km away
17. 1.527 km SW of Scotia, CaliforniaMon, Sep 10, 4:55 AM PDT · 17188 days ago · 6 km deep · 35 km away
18. 1.527 km WSW of Leggett, CaliforniaSun, Sep 9, 6:44 PM PDT · 17188 days ago · 8 km deep · 91 km away
19. 1.824 km WSW of Ferndale, CaliforniaSun, Sep 9, 4:50 PM PDT · 17188 days ago · 22 km deep · 25 km away
20. 2.471 km W of Ferndale, CaliforniaSun, Sep 9, 12:01 PM PDT · 17188 days ago · 2 km deep · 33 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1048021. Read Thu, Oct 1, 2026, 4:20 AM UTC.