M2.1 earthquake 41 km SW of Ferndale, California

Magnitude

2.1 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Wed, Aug 31, 1983, 1:47 PM PDT

UTC

1983-08-31 20:47:46 UTC

Depth

9.6 km (6.0 mi), shallow

Epicenter

40.273° N, 124.548° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.6 km horizontally, 1.0 km in depth

Magnitude uncertainty

±0.27

Depth from

From location

Station coverage gap

280°, poorly surrounded by stations

Stations used

10

• Ferndale, CaliforniaPopulation 1,369. Forecast41 kmSW
• Fortuna, CaliforniaPopulation 12,000. Forecast49 kmSW
• Chico, CaliforniaPopulation 121,345. Forecast239 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast889 kmNW

After

1. 1.833 km SW of Ferndale, CaliforniaWed, Aug 31, 7:40 PM PDT · 15741 days ago · 17 km deep · 12 km away
2. 2.742 km SW of Ferndale, CaliforniaWed, Aug 31, 10:01 PM PDT · 15740 days ago · 23 km deep · 10 km away
3. 1.732 km SW of Ferndale, CaliforniaThu, Sep 1, 6:58 PM PDT · 15740 days ago · 21 km deep · 9 km away
4. 2.365 km WSW of Ferndale, CaliforniaThu, Sep 1, 10:05 PM PDT · 15739 days ago · 37 km deep · 37 km away
5. 2.873 km WSW of Ferndale, CaliforniaFri, Sep 2, 12:20 PM PDT · 15739 days ago · 42 km deep · 49 km away
6. 1.932 km SW of Scotia, CaliforniaFri, Sep 2, 8:34 PM PDT · 15738 days ago · 22 km deep · 13 km away
7. 1.816 km SW of Mad River, CaliforniaSat, Sep 3, 12:24 AM PDT · 15738 days ago · 21 km deep · 76 km away
8. 1.84 km WSW of Scotia, CaliforniaSat, Sep 3, 6:54 AM PDT · 15738 days ago · 9 km deep · 40 km away
9. 2.339 km SW of Ferndale, CaliforniaSun, Sep 4, 12:26 AM PDT · 15737 days ago · 21 km deep · 4 km away
10. 1.56 km S of Ferndale, CaliforniaSun, Sep 4, 1:07 AM PDT · 15737 days ago · 9 km deep · 35 km away
11. 2.145 km SW of Ferndale, CaliforniaSun, Sep 4, 3:56 AM PDT · 15737 days ago · 24 km deep · 11 km away
12. 2.364 km WSW of Ferndale, CaliforniaMon, Sep 5, 2:24 PM PDT · 15736 days ago · 59 km deep · 40 km away
13. 2.733 km SW of Scotia, CaliforniaTue, Sep 6, 12:29 AM PDT · 15735 days ago · 23 km deep · 13 km away
14. 2.39 km SW of Ferndale, CaliforniaThu, Sep 8, 10:03 AM PDT · 15733 days ago · 14 km deep · 32 km away
15. 2.934 km SW of Scotia, CaliforniaFri, Sep 9, 11:40 AM PDT · 15732 days ago · 22 km deep · 11 km away
16. 2.016 km SSW of Ferndale, CaliforniaFri, Sep 9, 3:10 PM PDT · 15732 days ago · 18 km deep · 25 km away
17. 2.17 km WNW of Hyampom, CaliforniaSat, Sep 10, 2:52 AM PDT · 15731 days ago · 26 km deep · 95 km away
18. 1.936 km SSW of Ferndale, CaliforniaSat, Sep 10, 9:39 AM PDT · 15731 days ago · 22 km deep · 6 km away
19. 3.14 km NE of Miranda, CaliforniaSat, Sep 10, 8:57 PM PDT · 15730 days ago · 27 km deep · 64 km away
20. 2.531 km WSW of Ferndale, CaliforniaSat, Sep 10, 11:23 PM PDT · 15730 days ago · 33 km deep · 22 km away
21. 3.334 km SSW of Ferndale, CaliforniaSun, Sep 11, 7:33 AM PDT · 15730 days ago · 23 km deep · 11 km away
22. 3.1114 km W of Ferndale, CaliforniaSun, Sep 11, 8:31 AM PDT · 15730 days ago · 5 km deep · 97 km away
23. 1.620 km SW of Ferndale, CaliforniaSun, Sep 11, 10:30 AM PDT · 15730 days ago · 25 km deep · 22 km away
24. 1.75 km NNE of Mad River, CaliforniaSun, Sep 11, 11:03 AM PDT · 15730 days ago · 4 km deep · 93 km away
25. 2.618 km SSW of Ferndale, CaliforniaSun, Sep 11, 1:07 PM PDT · 15730 days ago · 21 km deep · 24 km away
26. 3.466 km W of Ferndale, CaliforniaMon, Sep 12, 7:28 AM PDT · 15729 days ago · 27 km deep · 53 km away
27. 2.215 km NE of Redcrest, CaliforniaMon, Sep 12, 7:18 PM PDT · 15729 days ago · 24 km deep · 66 km away
28. 1.617 km WNW of Hyampom, CaliforniaMon, Sep 12, 7:33 PM PDT · 15729 days ago · 21 km deep · 91 km away
29. 1.726 km SW of Scotia, CaliforniaTue, Sep 13, 2:00 AM PDT · 15728 days ago · 6 km deep · 22 km away
30. 2.211 km SSW of Ferndale, CaliforniaTue, Sep 13, 7:53 PM PDT · 15728 days ago · 26 km deep · 31 km away
31. 1.615 km W of Laytonville, CaliforniaTue, Sep 13, 8:04 PM PDT · 15728 days ago · 2 km deep · 98 km away
32. 1.942 km SW of Ferndale, CaliforniaWed, Sep 14, 2:22 PM PDT · 15727 days ago · 11 km deep · 13 km away
33. 3.298 km W of Ferndale, CaliforniaWed, Sep 14, 10:40 PM PDT · 15726 days ago · 19 km deep · 75 km away
34. 1.722 km WSW of Weott, CaliforniaThu, Sep 15, 1:29 AM PDT · 15726 days ago · 8 km deep · 32 km away
35. 2.14 km E of Indianola, CaliforniaThu, Sep 15, 8:38 PM PDT · 15725 days ago · 22 km deep · 55 km away
36. 2.51 km S of Mad River, CaliforniaThu, Sep 15, 10:44 PM PDT · 15725 days ago · 0 km deep · 90 km away
37. 2.335 km SW of Ferndale, CaliforniaFri, Sep 16, 9:32 AM PDT · 15725 days ago · 23 km deep · 6 km away
38. 2.644 km SW of Ferndale, CaliforniaFri, Sep 16, 6:21 PM PDT · 15725 days ago · 23 km deep · 14 km away
39. 2.659 km WSW of Ferndale, CaliforniaFri, Sep 16, 7:51 PM PDT · 15725 days ago · 7 km deep · 33 km away
40. 2.821 km SW of Scotia, CaliforniaSat, Sep 17, 2:18 AM PDT · 15724 days ago · 33 km deep · 24 km away
41. 3.1115 km W of Ferndale, CaliforniaSat, Sep 17, 8:12 AM PDT · 15724 days ago · 17 km deep · 92 km away
42. 2.539 km SW of Ferndale, CaliforniaTue, Sep 20, 3:53 PM PDT · 15721 days ago · 22 km deep · 6 km away
43. 2.737 km SW of Ferndale, CaliforniaWed, Sep 21, 3:15 AM PDT · 15720 days ago · 19 km deep · 5 km away
44. 2.542 km SW of Ferndale, CaliforniaWed, Sep 21, 10:28 PM PDT · 15719 days ago · 19 km deep · 12 km away
45. 2.922 km SW of Ferndale, CaliforniaThu, Sep 22, 2:01 AM PDT · 15719 days ago · 21 km deep · 18 km away
46. 3.6118 km W of Ferndale, CaliforniaThu, Sep 22, 7:15 PM PDT · 15719 days ago · 5 km deep · 94 km away
47. 2.487 km W of Ferndale, CaliforniaThu, Sep 22, 7:34 PM PDT · 15719 days ago · 1 km deep · 65 km away
48. 2.08 km NE of Phillipsville, CaliforniaFri, Sep 23, 3:34 PM PDT · 15718 days ago · 25 km deep · 69 km away
49. 1.836 km SW of Ferndale, CaliforniaFri, Sep 23, 4:36 PM PDT · 15718 days ago · 26 km deep · 14 km away
50. 2.03 km SW of Loleta, CaliforniaSat, Sep 24, 6:30 PM PDT · 15717 days ago · 18 km deep · 46 km away
51. 1.95 km WSW of Indianola, CaliforniaSun, Sep 25, 2:51 AM PDT · 15716 days ago · 5 km deep · 49 km away
52. 2.833 km WSW of Ferndale, CaliforniaSun, Sep 25, 6:02 PM PDT · 15716 days ago · 29 km deep · 24 km away
53. 1.817 km ENE of Hydesville, CaliforniaSun, Sep 25, 6:11 PM PDT · 15716 days ago · 23 km deep · 66 km away
54. 2.847 km WSW of Ferndale, CaliforniaSun, Sep 25, 6:57 PM PDT · 15716 days ago · 21 km deep · 18 km away
55. 2.050 km WSW of Ferndale, CaliforniaSun, Sep 25, 10:23 PM PDT · 15715 days ago · 18 km deep · 19 km away
56. 2.65 km ENE of Rio Dell, CaliforniaMon, Sep 26, 12:07 AM PDT · 15715 days ago · 20 km deep · 51 km away
57. 2.36 km SE of Hydesville, CaliforniaMon, Sep 26, 12:17 AM PDT · 15715 days ago · 19 km deep · 51 km away
58. 2.06 km ENE of Rio Dell, CaliforniaMon, Sep 26, 2:04 AM PDT · 15715 days ago · 20 km deep · 51 km away
59. 1.96 km ENE of Rio Dell, CaliforniaMon, Sep 26, 2:30 AM PDT · 15715 days ago · 19 km deep · 51 km away
60. 2.85 km ENE of Rio Dell, CaliforniaMon, Sep 26, 4:29 AM PDT · 15715 days ago · 20 km deep · 51 km away

The first 60 of 116.

Before

1. 1.543 km SW of Ferndale, CaliforniaWed, Aug 31, 11:43 AM PDT · 15741 days ago · 26 km deep · 2 km away
2. 2.435 km SSW of Ferndale, CaliforniaWed, Aug 31, 8:38 AM PDT · 15741 days ago · 18 km deep · 7 km away
3. 3.044 km SW of Ferndale, CaliforniaWed, Aug 31, 3:34 AM PDT · 15741 days ago · 21 km deep · 14 km away
4. 2.736 km SSW of Ferndale, CaliforniaWed, Aug 31, 1:26 AM PDT · 15741 days ago · 20 km deep · 6 km away
5. 2.033 km SW of Scotia, CaliforniaTue, Aug 30, 3:37 PM PDT · 15742 days ago · 17 km deep · 13 km away
6. 3.643 km SW of Ferndale, CaliforniaTue, Aug 30, 3:13 AM PDT · 15742 days ago · 20 km deep · 14 km away
7. 2.833 km SSW of Ferndale, CaliforniaMon, Aug 29, 3:31 PM PDT · 15743 days ago · 24 km deep · 10 km away
8. 2.843 km SW of Ferndale, CaliforniaMon, Aug 29, 11:47 AM PDT · 15743 days ago · 22 km deep · 10 km away
9. 1.614 km SW of Scotia, CaliforniaMon, Aug 29, 12:57 AM PDT · 15743 days ago · 38 km deep · 31 km away
10. 2.035 km SSW of Ferndale, CaliforniaMon, Aug 29, 12:29 AM PDT · 15743 days ago · 20 km deep · 7 km away
11. 3.537 km SSW of Ferndale, CaliforniaSun, Aug 28, 8:38 PM PDT · 15743 days ago · 20 km deep · 6 km away
12. 2.348 km WSW of Ferndale, CaliforniaSun, Aug 28, 12:43 PM PDT · 15744 days ago · 20 km deep · 18 km away
13. 1.53 km SSE of Ferndale, CaliforniaSun, Aug 28, 7:21 AM PDT · 15744 days ago · 26 km deep · 39 km away
14. 1.529 km WSW of Ferndale, CaliforniaSun, Aug 28, 6:16 AM PDT · 15744 days ago · 17 km deep · 23 km away
15. 2.870 km W of Ferndale, CaliforniaSun, Aug 28, 5:58 AM PDT · 15744 days ago · 8 km deep · 66 km away
16. 3.038 km SW of Ferndale, CaliforniaSun, Aug 28, 4:29 AM PDT · 15744 days ago · 20 km deep · 6 km away
17. 2.030 km NW of Shelter Cove, CaliforniaSat, Aug 27, 8:11 PM PDT · 15745 days ago · 30 km deep · 20 km away
18. 1.846 km SW of Ferndale, CaliforniaSat, Aug 27, 1:32 PM PDT · 15745 days ago · 5 km deep · 6 km away
19. 2.021 km SSW of Ferndale, CaliforniaSat, Aug 27, 12:32 PM PDT · 15745 days ago · 26 km deep · 22 km away
20. 2.111 km W of Indianola, CaliforniaSat, Aug 27, 4:38 AM PDT · 15745 days ago · 19 km deep · 49 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1101656. Read Mon, Oct 5, 2026, 2:44 PM UTC.