M3.5 earthquake 93 km WSW of Ferndale, California

Magnitude

3.5 (md), minor

Local time

Fri, Oct 16, 1981, 8:26 PM PDT

UTC

1981-10-17 03:26:36 UTC

Depth

4.5 km (2.8 mi), shallow

Epicenter

40.405° N, 125.338° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 3.6 km horizontally, 15.2 km in depth

Magnitude uncertainty

±0.06

Depth from

From location

Station coverage gap

286°, poorly surrounded by stations

Stations used

39

• Ferndale, CaliforniaPopulation 1,369. Forecast93 kmWSW
• Fortuna, CaliforniaPopulation 12,000. Forecast102 kmWSW
• Chico, CaliforniaPopulation 121,345. Forecast307 kmWNW

After

1. 2.3108 km WSW of Ferndale, CaliforniaFri, Oct 16, 10:56 PM PDT · 16411 days ago · 4 km deep · 15 km away
2. 1.615 km WSW of Ferndale, CaliforniaSat, Oct 17, 5:03 AM PDT · 16411 days ago · 24 km deep · 78 km away
3. 1.643 km SW of Ferndale, CaliforniaSat, Oct 17, 8:38 AM PDT · 16411 days ago · 32 km deep · 56 km away
4. 2.550 km WNW of Ferndale, CaliforniaSat, Oct 17, 8:58 AM PDT · 16411 days ago · 3 km deep · 55 km away
5. 1.628 km SW of Ferndale, CaliforniaSat, Oct 17, 11:52 AM PDT · 16411 days ago · 25 km deep · 70 km away
6. 1.814 km WNW of Samoa, CaliforniaSat, Oct 17, 8:26 PM PDT · 16411 days ago · 25 km deep · 97 km away
7. 1.518 km SW of Scotia, CaliforniaSun, Oct 18, 12:58 AM PDT · 16410 days ago · 22 km deep · 92 km away
8. 1.641 km SW of Ferndale, CaliforniaSun, Oct 18, 4:14 AM PDT · 16410 days ago · 20 km deep · 64 km away
9. 2.036 km SSW of Ferndale, CaliforniaSun, Oct 18, 10:46 AM PDT · 16410 days ago · 21 km deep · 72 km away
10. 1.96 km SE of Ferndale, CaliforniaSun, Oct 18, 10:03 PM PDT · 16409 days ago · 11 km deep · 97 km away
11. 1.638 km WSW of Ferndale, CaliforniaMon, Oct 19, 8:48 AM PDT · 16409 days ago · 31 km deep · 57 km away
12. 2.6110 km WSW of Ferndale, CaliforniaTue, Oct 20, 2:55 AM PDT · 16408 days ago · 4 km deep · 18 km away
13. 1.539 km SSW of Ferndale, CaliforniaTue, Oct 20, 10:43 PM PDT · 16407 days ago · 25 km deep · 73 km away
14. 2.134 km SSW of Ferndale, CaliforniaTue, Oct 20, 11:52 PM PDT · 16407 days ago · 25 km deep · 73 km away
15. 3.0101 km W of Ferndale, CaliforniaWed, Oct 21, 12:06 AM PDT · 16407 days ago · 8 km deep · 16 km away
16. 1.850 km WSW of Ferndale, CaliforniaWed, Oct 21, 6:31 AM PDT · 16407 days ago · 30 km deep · 43 km away
17. 1.718 km W of Ferndale, CaliforniaWed, Oct 21, 8:51 AM PDT · 16407 days ago · 22 km deep · 75 km away
18. 1.562 km SW of Ferndale, CaliforniaWed, Oct 21, 11:45 AM PDT · 16407 days ago · 5 km deep · 43 km away
19. 1.640 km SSW of Ferndale, CaliforniaThu, Oct 22, 11:27 AM PDT · 16406 days ago · 25 km deep · 71 km away
20. 1.837 km SW of Ferndale, CaliforniaThu, Oct 22, 2:23 PM PDT · 16406 days ago · 24 km deep · 71 km away
21. 2.936 km SSW of Ferndale, CaliforniaFri, Oct 23, 2:20 AM PDT · 16405 days ago · 12 km deep · 74 km away
22. 2.015 km SSW of Ferndale, CaliforniaFri, Oct 23, 3:26 PM PDT · 16405 days ago · 23 km deep · 85 km away
23. 2.416 km SSW of Ferndale, CaliforniaFri, Oct 23, 3:27 PM PDT · 16405 days ago · 23 km deep · 84 km away
24. 2.966 km W of Indianola, CaliforniaFri, Oct 23, 3:50 PM PDT · 16405 days ago · 5 km deep · 50 km away
25. 2.256 km WSW of Ferndale, CaliforniaFri, Oct 23, 6:50 PM PDT · 16405 days ago · 23 km deep · 41 km away
26. 2.619 km WSW of Scotia, CaliforniaSat, Oct 24, 5:41 AM PDT · 16404 days ago · 26 km deep · 87 km away
27. 3.136 km SW of Ferndale, CaliforniaSat, Oct 24, 9:10 AM PDT · 16404 days ago · 28 km deep · 68 km away
28. 3.837 km SW of Ferndale, CaliforniaSun, Oct 25, 9:18 AM PST · 16403 days ago · 28 km deep · 66 km away
29. 2.936 km SW of Ferndale, CaliforniaSun, Oct 25, 9:21 AM PST · 16403 days ago · 27 km deep · 67 km away
30. 1.837 km SW of Ferndale, CaliforniaSun, Oct 25, 10:01 AM PST · 16403 days ago · 28 km deep · 65 km away
31. 1.632 km SW of Ferndale, CaliforniaMon, Oct 26, 11:21 AM PST · 16402 days ago · 39 km deep · 71 km away
32. 2.532 km WSW of Ferndale, CaliforniaMon, Oct 26, 12:47 PM PST · 16402 days ago · 26 km deep · 63 km away
33. 2.136 km SW of Ferndale, CaliforniaMon, Oct 26, 5:18 PM PST · 16402 days ago · 33 km deep · 67 km away
34. 1.945 km SW of Ferndale, CaliforniaTue, Oct 27, 3:18 PM PST · 16401 days ago · 20 km deep · 59 km away
35. 2.834 km SW of Ferndale, CaliforniaTue, Oct 27, 6:45 PM PST · 16401 days ago · 35 km deep · 70 km away
36. 1.739 km SW of Ferndale, CaliforniaWed, Oct 28, 5:39 AM PST · 16400 days ago · 23 km deep · 65 km away
37. 1.617 km WNW of Indianola, CaliforniaWed, Oct 28, 6:31 AM PST · 16400 days ago · 25 km deep · 86 km away
38. 1.643 km SW of Ferndale, CaliforniaWed, Oct 28, 10:16 AM PST · 16400 days ago · 18 km deep · 62 km away
39. 2.415 km W of Samoa, CaliforniaWed, Oct 28, 8:59 PM PST · 16399 days ago · 23 km deep · 94 km away
40. 2.911 km W of Ferndale, CaliforniaThu, Oct 29, 4:11 AM PST · 16399 days ago · 22 km deep · 82 km away
41. 2.635 km SW of Ferndale, CaliforniaThu, Oct 29, 4:14 AM PST · 16399 days ago · 25 km deep · 67 km away
42. 3.236 km SW of Ferndale, CaliforniaThu, Oct 29, 4:30 AM PST · 16399 days ago · 28 km deep · 67 km away
43. 1.638 km SW of Ferndale, CaliforniaThu, Oct 29, 8:26 AM PST · 16399 days ago · 25 km deep · 68 km away
44. 1.659 km SW of Ferndale, CaliforniaThu, Oct 29, 3:01 PM PST · 16399 days ago · 6 km deep · 44 km away
45. 2.059 km W of Ferndale, CaliforniaThu, Oct 29, 4:23 PM PST · 16399 days ago · 10 km deep · 34 km away
46. 1.738 km SW of Ferndale, CaliforniaFri, Oct 30, 3:15 AM PST · 16398 days ago · 22 km deep · 68 km away
47. 2.647 km SW of Ferndale, CaliforniaFri, Oct 30, 10:01 AM PST · 16398 days ago · 21 km deep · 54 km away
48. 1.517 km W of Ferndale, CaliforniaFri, Oct 30, 1:30 PM PST · 16398 days ago · 22 km deep · 76 km away
49. 3.038 km SW of Ferndale, CaliforniaFri, Oct 30, 3:39 PM PST · 16398 days ago · 29 km deep · 65 km away
50. 3.036 km SW of Ferndale, CaliforniaFri, Oct 30, 9:05 PM PST · 16397 days ago · 28 km deep · 67 km away
51. 1.718 km WSW of Ferndale, CaliforniaSat, Oct 31, 2:52 AM PST · 16397 days ago · 22 km deep · 75 km away
52. 1.826 km SW of Ferndale, CaliforniaSat, Oct 31, 8:09 AM PST · 16397 days ago · 18 km deep · 72 km away
53. 3.294 km W of Ferndale, CaliforniaSat, Oct 31, 7:20 PM PST · 16397 days ago · 18 km deep · 28 km away
54. 1.836 km WSW of Ferndale, CaliforniaSun, Nov 1, 12:23 AM PST · 16396 days ago · 25 km deep · 57 km away
55. 2.311 km W of Indianola, CaliforniaSun, Nov 1, 7:01 AM PST · 16396 days ago · 26 km deep · 88 km away
56. 1.79 km WSW of Rio Dell, CaliforniaSun, Nov 1, 9:50 AM PST · 16396 days ago · 23 km deep · 96 km away
57. 2.641 km SW of Ferndale, CASun, Nov 1, 11:00 AM PST · 16396 days ago · 26 km deep · 63 km away
58. 1.835 km SW of Ferndale, CaliforniaSun, Nov 1, 7:51 PM PST · 16396 days ago · 36 km deep · 67 km away
59. 3.257 km WSW of Ferndale, CaliforniaMon, Nov 2, 1:33 PM PST · 16395 days ago · 20 km deep · 39 km away
60. 2.137 km SW of Ferndale, CaliforniaTue, Nov 3, 9:43 AM PST · 16394 days ago · 26 km deep · 66 km away

The first 60 of 125.

Before

1. 1.633 km SW of Ferndale, CaliforniaFri, Oct 16, 6:41 PM PDT · 16412 days ago · 23 km deep · 65 km away
2. 2.939 km SW of Ferndale, CAFri, Oct 16, 7:20 AM PDT · 16412 days ago · 25 km deep · 64 km away
3. 2.436 km SW of Ferndale, CaliforniaFri, Oct 16, 5:26 AM PDT · 16412 days ago · 27 km deep · 68 km away
4. 1.754 km WSW of Ferndale, CaliforniaWed, Oct 14, 6:37 AM PDT · 16414 days ago · 30 km deep · 46 km away
5. 2.461 km WSW of Ferndale, CaliforniaWed, Oct 14, 6:01 AM PDT · 16414 days ago · 5 km deep · 32 km away
6. 1.737 km SSW of Ferndale, CaliforniaWed, Oct 14, 3:31 AM PDT · 16414 days ago · 19 km deep · 77 km away
7. 1.620 km SSW of Ferndale, CaliforniaWed, Oct 14, 12:07 AM PDT · 16414 days ago · 4 km deep · 83 km away
8. 1.58 km SW of Scotia, CaliforniaTue, Oct 13, 9:28 PM PDT · 16414 days ago · 31 km deep · 99 km away
9. 3.336 km SW of Ferndale, CaliforniaTue, Oct 13, 9:36 AM PDT · 16415 days ago · 28 km deep · 67 km away
10. 1.59 km W of Ferndale, CaliforniaTue, Oct 13, 2:01 AM PDT · 16415 days ago · 22 km deep · 84 km away
11. 2.243 km SW of Ferndale, CaliforniaMon, Oct 12, 8:20 PM PDT · 16416 days ago · 17 km deep · 60 km away
12. 1.618 km WSW of Scotia, CaliforniaMon, Oct 12, 7:10 AM PDT · 16416 days ago · 28 km deep · 88 km away
13. 2.517 km WSW of Scotia, CaliforniaMon, Oct 12, 6:59 AM PDT · 16416 days ago · 28 km deep · 89 km away
14. 1.738 km SW of Ferndale, CaliforniaSun, Oct 11, 8:46 PM PDT · 16417 days ago · 37 km deep · 63 km away
15. 4.1128 km W of Trinidad, CaliforniaSun, Oct 11, 5:45 PM PDT · 16417 days ago · 5 km deep · 83 km away
16. 1.535 km SSW of Ferndale, CaliforniaSun, Oct 11, 3:13 PM PDT · 16417 days ago · 23 km deep · 74 km away
17. 1.779 km W of Ferndale, CaliforniaSun, Oct 11, 1:59 AM PDT · 16417 days ago · 5 km deep · 16 km away
18. 2.7116 km W of Big Lagoon, CaliforniaSat, Oct 10, 3:23 PM PDT · 16418 days ago · 0 km deep · 92 km away
19. 1.736 km SW of Ferndale, CaliforniaSat, Oct 10, 1:13 PM PDT · 16418 days ago · 26 km deep · 69 km away
20. 1.733 km SW of Ferndale, CaliforniaFri, Oct 9, 4:08 PM PDT · 16419 days ago · 35 km deep · 72 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1068680 (also filed as usp0001ggq). Read Tue, Sep 22, 2026, 3:35 PM UTC.