M2.5 earthquake 105 km W of Ferndale, California

Magnitude

2.5 (md), micro

Local time

Sun, Aug 16, 1981, 8:47 PM PDT

UTC

1981-08-17 03:47:53 UTC

Depth

4.0 km (2.5 mi), shallow

Epicenter

40.402° N, 125.483° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 13.7 km horizontally, 17.9 km in depth

Depth from

From location

Station coverage gap

312°, poorly surrounded by stations

Stations used

4

• Ferndale, CaliforniaPopulation 1,369. Forecast105 kmW
• Fortuna, CaliforniaPopulation 12,000. Forecast114 kmW
• Chico, CaliforniaPopulation 121,345. Forecast319 kmWNW

After

1. 2.639 km SW of Ferndale, CaliforniaMon, Aug 17, 7:57 AM PDT · 16479 days ago · 21 km deep · 77 km away
2. 2.276 km WSW of Ferndale, CaliforniaMon, Aug 17, 5:24 PM PDT · 16479 days ago · 5 km deep · 33 km away
3. 3.037 km SW of Ferndale, CaliforniaTue, Aug 18, 6:27 PM PDT · 16478 days ago · 28 km deep · 78 km away
4. 2.037 km SW of Ferndale, CaliforniaTue, Aug 18, 11:49 PM PDT · 16478 days ago · 20 km deep · 82 km away
5. 2.837 km SW of Ferndale, CaliforniaWed, Aug 19, 6:12 AM PDT · 16477 days ago · 17 km deep · 79 km away
6. 1.7near the coast of Northern CaliforniaWed, Aug 19, 4:12 PM PDT · 16477 days ago · 10 km deep · 98 km away
7. 2.238 km SW of Ferndale, CaliforniaThu, Aug 20, 9:28 PM PDT · 16476 days ago · 25 km deep · 75 km away
8. 2.398 km WSW of Ferndale, CaliforniaSat, Aug 22, 5:12 AM PDT · 16474 days ago · 7 km deep · 9 km away
9. 3.233 km SW of Scotia, CaliforniaSat, Aug 22, 12:31 PM PDT · 16474 days ago · 27 km deep · 93 km away
10. 2.425 km SW of Ferndale, CaliforniaSun, Aug 23, 2:58 AM PDT · 16474 days ago · 28 km deep · 85 km away
11. 2.139 km SW of Ferndale, CASun, Aug 23, 10:50 PM PDT · 16473 days ago · 30 km deep · 78 km away
12. 1.633 km SSW of Ferndale, CaliforniaMon, Aug 24, 12:01 PM PDT · 16472 days ago · 34 km deep · 86 km away
13. 1.630 km WSW of Ferndale, CaliforniaTue, Aug 25, 3:04 AM PDT · 16472 days ago · 27 km deep · 78 km away
14. 2.035 km SW of Ferndale, CaliforniaTue, Aug 25, 5:18 PM PDT · 16471 days ago · 17 km deep · 75 km away
15. 2.044 km SW of Ferndale, CaliforniaTue, Aug 25, 5:43 PM PDT · 16471 days ago · 17 km deep · 69 km away
16. 3.261 km WNW of Indianola, CaliforniaThu, Aug 27, 4:37 AM PDT · 16470 days ago · 9 km deep · 66 km away
17. 2.013 km SSW of Ferndale, CaliforniaThu, Aug 27, 9:54 AM PDT · 16469 days ago · 19 km deep · 99 km away
18. 2.130 km SW of Ferndale, CaliforniaFri, Aug 28, 9:32 PM PDT · 16468 days ago · 29 km deep · 78 km away
19. 1.843 km SW of Ferndale, CaliforniaSat, Aug 29, 12:37 AM PDT · 16468 days ago · 23 km deep · 71 km away
20. 1.738 km SW of Ferndale, CaliforniaSat, Aug 29, 7:18 PM PDT · 16467 days ago · 35 km deep · 75 km away
21. 1.648 km WNW of Indianola, CaliforniaTue, Sep 1, 5:18 PM PDT · 16464 days ago · 2 km deep · 72 km away
22. 2.234 km SW of Ferndale, CaliforniaWed, Sep 2, 6:56 AM PDT · 16463 days ago · 33 km deep · 82 km away
23. 2.743 km SW of Ferndale, CaliforniaThu, Sep 3, 5:15 AM PDT · 16462 days ago · 30 km deep · 72 km away
24. 1.836 km SW of Ferndale, CaliforniaFri, Sep 4, 1:54 AM PDT · 16462 days ago · 21 km deep · 78 km away
25. 2.637 km SSW of Ferndale, CaliforniaFri, Sep 4, 6:54 PM PDT · 16461 days ago · 28 km deep · 88 km away
26. 1.637 km SW of Ferndale, CaliforniaSat, Sep 5, 2:08 AM PDT · 16461 days ago · 22 km deep · 80 km away
27. 1.947 km SW of Ferndale, CaliforniaSat, Sep 5, 11:56 AM PDT · 16460 days ago · 19 km deep · 65 km away
28. 2.8100 km W of Trinidad, CaliforniaSat, Sep 5, 12:55 PM PDT · 16460 days ago · 13 km deep · 82 km away
29. 2.325 km WSW of Ferndale, CaliforniaSun, Sep 6, 1:47 AM PDT · 16460 days ago · 27 km deep · 81 km away
30. 2.049 km W of Ferndale, CaliforniaWed, Sep 9, 11:43 AM PDT · 16456 days ago · 20 km deep · 55 km away
31. 2.983 km WSW of Ferndale, CaliforniaThu, Sep 10, 9:41 PM PDT · 16455 days ago · 11 km deep · 24 km away
32. 1.928 km SSW of Ferndale, CaliforniaSat, Sep 12, 2:40 AM PDT · 16454 days ago · 18 km deep · 88 km away
33. 1.828 km WSW of Ferndale, CaliforniaSat, Sep 12, 5:07 PM PDT · 16453 days ago · 24 km deep · 77 km away
34. 1.631 km SW of Ferndale, CaliforniaSat, Sep 12, 11:12 PM PDT · 16453 days ago · 32 km deep · 85 km away
35. 1.638 km SW of Ferndale, CaliforniaMon, Sep 14, 1:54 AM PDT · 16452 days ago · 23 km deep · 81 km away
36. 1.839 km WSW of Ferndale, CaliforniaMon, Sep 14, 9:24 AM PDT · 16451 days ago · 48 km deep · 68 km away
37. 1.628 km SW of Ferndale, CaliforniaMon, Sep 14, 4:07 PM PDT · 16451 days ago · 18 km deep · 85 km away
38. 1.627 km SW of Ferndale, CaliforniaMon, Sep 14, 4:53 PM PDT · 16451 days ago · 17 km deep · 85 km away
39. 1.750 km WNW of Indianola, CaliforniaMon, Sep 14, 10:35 PM PDT · 16451 days ago · -1 km deep · 71 km away
40. 2.370 km W of Indianola, CaliforniaTue, Sep 15, 4:25 AM PDT · 16451 days ago · 4 km deep · 55 km away
41. 1.921 km SSW of Ferndale, CaliforniaTue, Sep 15, 10:24 PM PDT · 16450 days ago · 21 km deep · 92 km away
42. 4.736 km SW of Ferndale, CaliforniaWed, Sep 16, 5:41 AM PDT · 16449 days ago · 28 km deep · 79 km away
43. 3.234 km SW of Ferndale, CaliforniaWed, Sep 16, 5:45 AM PDT · 16449 days ago · 30 km deep · 84 km away
44. 3.636 km SW of Ferndale, CaliforniaWed, Sep 16, 5:45 AM PDT · 16449 days ago · 29 km deep · 79 km away
45. 3.035 km SW of Ferndale, CaliforniaWed, Sep 16, 5:59 AM PDT · 16449 days ago · 28 km deep · 82 km away
46. 1.837 km SW of Ferndale, CaliforniaWed, Sep 16, 6:18 AM PDT · 16449 days ago · 26 km deep · 81 km away
47. 1.837 km SW of Ferndale, CaliforniaWed, Sep 16, 7:16 AM PDT · 16449 days ago · 26 km deep · 79 km away
48. 2.140 km SW of Ferndale, CaliforniaWed, Sep 16, 7:29 AM PDT · 16449 days ago · 27 km deep · 75 km away
49. 3.031 km SW of Ferndale, CaliforniaWed, Sep 16, 8:15 AM PDT · 16449 days ago · 25 km deep · 86 km away
50. 1.943 km SW of Ferndale, CaliforniaWed, Sep 16, 8:25 AM PDT · 16449 days ago · 31 km deep · 74 km away
51. 1.838 km SW of Ferndale, CaliforniaWed, Sep 16, 11:46 AM PDT · 16449 days ago · 29 km deep · 76 km away
52. 2.837 km SW of Ferndale, CaliforniaWed, Sep 16, 11:49 AM PDT · 16449 days ago · 27 km deep · 79 km away
53. 2.433 km SW of Ferndale, CaliforniaWed, Sep 16, 7:39 PM PDT · 16449 days ago · 26 km deep · 84 km away
54. 1.935 km SSW of Ferndale, CaliforniaWed, Sep 16, 8:05 PM PDT · 16449 days ago · 25 km deep · 89 km away
55. 2.160 km W of Ferndale, CaliforniaThu, Sep 17, 5:05 AM PDT · 16448 days ago · 15 km deep · 45 km away
56. 1.837 km SW of Ferndale, CaliforniaThu, Sep 17, 8:07 AM PDT · 16448 days ago · 27 km deep · 79 km away
57. 1.937 km SW of Ferndale, CaliforniaThu, Sep 17, 2:52 PM PDT · 16448 days ago · 28 km deep · 78 km away
58. 3.337 km SW of Ferndale, CaliforniaFri, Sep 18, 4:34 PM PDT · 16447 days ago · 28 km deep · 78 km away
59. 2.117 km WNW of Indianola, CaliforniaFri, Sep 18, 8:59 PM PDT · 16447 days ago · 24 km deep · 98 km away
60. 1.749 km WSW of Ferndale, CaliforniaSat, Sep 19, 5:19 AM PDT · 16446 days ago · 5 km deep · 62 km away

The first 60 of 117.

Before

1. 2.017 km SSW of Ferndale, CaliforniaSat, Aug 15, 9:39 PM PDT · 16481 days ago · 23 km deep · 96 km away
2. 2.353 km W of Ferndale, CaliforniaSat, Aug 15, 4:41 PM PDT · 16481 days ago · 5 km deep · 54 km away
3. 1.616 km WNW of Fields Landing, CaliforniaFri, Aug 14, 3:41 PM PDT · 16482 days ago · 22 km deep · 99 km away
4. 2.8122 km W of Ferndale, CaliforniaFri, Aug 14, 8:17 AM PDT · 16482 days ago · 2 km deep · 25 km away
5. 1.842 km SW of Ferndale, CaliforniaFri, Aug 14, 5:39 AM PDT · 16482 days ago · 20 km deep · 74 km away
6. 1.534 km SSW of Ferndale, CaliforniaFri, Aug 14, 2:50 AM PDT · 16483 days ago · 20 km deep · 88 km away
7. 3.091 km W of Ferndale, CaliforniaFri, Aug 14, 12:09 AM PDT · 16483 days ago · 40 km deep · 13 km away
8. 2.498 km W of Ferndale, CaliforniaThu, Aug 13, 8:22 PM PDT · 16483 days ago · 4 km deep · 30 km away
9. 2.139 km SW of Ferndale, CaliforniaThu, Aug 13, 3:12 AM PDT · 16484 days ago · 23 km deep · 79 km away
10. 2.494 km W of Ferndale, CaliforniaWed, Aug 12, 6:51 PM PDT · 16484 days ago · 8 km deep · 11 km away
11. 2.253 km SW of Ferndale, CaliforniaSun, Aug 9, 7:58 PM PDT · 16487 days ago · 15 km deep · 60 km away
12. 2.838 km SW of Ferndale, CaliforniaSat, Aug 8, 10:07 AM PDT · 16488 days ago · 26 km deep · 77 km away
13. 1.710 km SSW of Ferndale, CaliforniaSat, Aug 8, 9:15 AM PDT · 16488 days ago · 20 km deep · 99 km away
14. 2.238 km SW of Ferndale, CaliforniaSat, Aug 8, 12:33 AM PDT · 16489 days ago · 20 km deep · 73 km away
15. 3.273 km WSW of Ferndale, CaliforniaFri, Aug 7, 10:51 AM PDT · 16489 days ago · 12 km deep · 31 km away
16. 2.037 km SW of Ferndale, CaliforniaThu, Aug 6, 9:20 AM PDT · 16490 days ago · 32 km deep · 78 km away
17. 3.083 km WSW of Ferndale, CaliforniaWed, Aug 5, 11:17 AM PDT · 16491 days ago · 5 km deep · 22 km away
18. 3.2off the coast of Northern CaliforniaWed, Aug 5, 11:17 AM PDT · 16491 days ago · 4 km deep · 12 km away
19. 2.059 km WNW of Indianola, CaliforniaWed, Aug 5, 12:44 AM PDT · 16492 days ago · 7 km deep · 68 km away
20. 1.919 km SSW of Ferndale, CaliforniaWed, Aug 5, 12:15 AM PDT · 16492 days ago · 28 km deep · 99 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1066839. Read Tue, Sep 29, 2026, 11:32 PM UTC.