M3.1 earthquake 65 km WSW of Ferndale, California

Magnitude

3.1 (Md, duration), minor

Magnitude from

Northern California Seismic System

Local time

Sun, Aug 26, 1984, 11:37 PM PDT

UTC

1984-08-27 06:37:40 UTC

Depth

46.9 km (29.1 mi), shallow

Epicenter

40.412° N, 125.012° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 3.2 km horizontally, 3.2 km in depth

Magnitude uncertainty

±0.06

Depth from

From location

Station coverage gap

251°, poorly surrounded by stations

Stations used

18

• Ferndale, CaliforniaPopulation 1,369. Forecast66 kmWSW
• Fortuna, CaliforniaPopulation 12,000. Forecast75 kmWSW
• Chico, CaliforniaPopulation 121,345. Forecast281 kmWNW

After

1. 1.645 km W of Ferndale, CaliforniaMon, Aug 27, 2:44 AM PDT · 15375 days ago · 15 km deep · 25 km away
2. 1.643 km W of Ferndale, CaliforniaMon, Aug 27, 3:52 AM PDT · 15375 days ago · 18 km deep · 25 km away
3. 2.7121 km W of Ferndale, CaliforniaWed, Aug 29, 10:41 AM PDT · 15373 days ago · 4 km deep · 58 km away
4. 2.7134 km W of Ferndale, CaliforniaWed, Aug 29, 7:19 PM PDT · 15372 days ago · 4 km deep · 71 km away
5. 2.3126 km W of Ferndale, CaliforniaThu, Aug 30, 12:40 AM PDT · 15372 days ago · 4 km deep · 63 km away
6. 2.185 km W of Ferndale, CaliforniaThu, Aug 30, 4:00 AM PDT · 15372 days ago · 14 km deep · 21 km away
7. 1.640 km WSW of Ferndale, CaliforniaFri, Aug 31, 11:35 PM PDT · 15370 days ago · 18 km deep · 26 km away
8. 1.648 km W of Ferndale, CaliforniaSun, Sep 2, 4:12 AM PDT · 15369 days ago · 14 km deep · 27 km away
9. 3.160 km W of Big Lagoon, CaliforniaSun, Sep 2, 11:52 PM PDT · 15368 days ago · 1 km deep · 90 km away
10. 2.045 km SW of Ferndale, CaliforniaWed, Sep 5, 8:30 AM PDT · 15366 days ago · 22 km deep · 29 km away
11. 1.93 km WSW of Loleta, CaliforniaWed, Sep 5, 3:31 PM PDT · 15366 days ago · 19 km deep · 68 km away
12. 2.437 km W of Ferndale, CaliforniaWed, Sep 5, 4:03 PM PDT · 15366 days ago · 20 km deep · 29 km away
13. 2.512 km SW of Ferndale, CaliforniaWed, Sep 5, 11:19 PM PDT · 15365 days ago · 26 km deep · 54 km away
14. 1.745 km WSW of Ferndale, CaliforniaSat, Sep 8, 4:52 AM PDT · 15363 days ago · 24 km deep · 26 km away
15. 2.638 km WSW of Ferndale, CaliforniaSat, Sep 8, 5:21 PM PDT · 15363 days ago · 24 km deep · 31 km away
16. 2.129 km WNW of Ferndale, CaliforniaSun, Sep 9, 6:47 PM PDT · 15361 days ago · 21 km deep · 42 km away
17. 3.230 km W of Indianola, CaliforniaSun, Sep 9, 6:53 PM PDT · 15361 days ago · 7 km deep · 48 km away
18. 3.5162 km WSW of Ferndale, CaliforniaSun, Sep 9, 8:30 PM PDT · 15361 days ago · 4 km deep · 97 km away
19. 3.589 km WSW of Ferndale, CaliforniaSun, Sep 9, 8:44 PM PDT · 15361 days ago · 5 km deep · 25 km away
20. 4.146 km WSW of Ferndale, CaliforniaSun, Sep 9, 11:43 PM PDT · 15361 days ago · 4 km deep · 25 km away
21. 3.673 km W of Ferndale, CaliforniaMon, Sep 10, 12:19 AM PDT · 15361 days ago · 4 km deep · 12 km away
22. 4.5116 km W of Ferndale, CaliforniaMon, Sep 10, 12:47 AM PDT · 15361 days ago · 5 km deep · 55 km away
23. 3.23 km E of Cutten, CaliforniaMon, Sep 10, 2:32 AM PDT · 15361 days ago · 21 km deep · 86 km away
24. 4.771 km W of Ferndale, CaliforniaMon, Sep 10, 4:52 PM PDT · 15361 days ago · 5 km deep · 12 km away
25. 3.11 km NNW of Myrtletown, CaliforniaMon, Sep 10, 5:24 PM PDT · 15361 days ago · 5 km deep · 85 km away
26. 4.280 km W of Ferndale, CaliforniaMon, Sep 10, 6:32 PM PDT · 15360 days ago · 5 km deep · 16 km away
27. 3.484 km WSW of Ferndale, CaliforniaTue, Sep 11, 3:16 AM PDT · 15360 days ago · 4 km deep · 24 km away
28. 4.669 km WSW of Ferndale, CaliforniaTue, Sep 11, 4:23 AM PDT · 15360 days ago · 4 km deep · 7 km away
29. 4.387 km WSW of Ferndale, CaliforniaTue, Sep 11, 11:44 AM PDT · 15360 days ago · 5 km deep · 21 km away
30. 1.641 km SW of Ferndale, CaliforniaThu, Sep 13, 4:22 AM PDT · 15358 days ago · 42 km deep · 31 km away
31. 2.06 km SW of Weott, CaliforniaThu, Sep 13, 10:33 PM PDT · 15357 days ago · 4 km deep · 89 km away
32. 2.792 km WNW of Samoa, CaliforniaFri, Sep 14, 9:26 AM PDT · 15357 days ago · 4 km deep · 68 km away
33. 2.837 km SW of Scotia, CaliforniaSat, Sep 15, 3:35 AM PDT · 15356 days ago · 4 km deep · 53 km away
34. 2.658 km WNW of Ferndale, CaliforniaSat, Sep 15, 3:37 AM PDT · 15356 days ago · 4 km deep · 33 km away
35. 2.19 km W of Indianola, CaliforniaSat, Sep 15, 10:57 AM PDT · 15356 days ago · 4 km deep · 63 km away
36. 4.044 km W of Indianola, CaliforniaSun, Sep 16, 2:36 PM PDT · 15355 days ago · 22 km deep · 40 km away
37. 2.055 km W of Trinidad, CaliforniaMon, Sep 17, 10:30 AM PDT · 15354 days ago · -1 km deep · 77 km away
38. 2.536 km SW of Ferndale, CaliforniaTue, Sep 18, 3:37 AM PDT · 15353 days ago · 27 km deep · 34 km away
39. 3.00 km E of Humboldt Hill, CaliforniaTue, Sep 18, 9:35 PM PDT · 15352 days ago · 7 km deep · 78 km away
40. 1.50 km NNW of Humboldt Hill, CaliforniaTue, Sep 18, 9:38 PM PDT · 15352 days ago · 6 km deep · 78 km away
41. 4.8101 km W of Ferndale, CaliforniaThu, Sep 20, 11:30 AM PDT · 15351 days ago · 3 km deep · 37 km away
42. 3.20 km SW of Humboldt Hill, CaliforniaThu, Sep 20, 8:07 PM PDT · 15350 days ago · 6 km deep · 78 km away
43. 2.10 km WNW of Humboldt Hill, CaliforniaThu, Sep 20, 8:46 PM PDT · 15350 days ago · 6 km deep · 77 km away
44. 2.20 km E of Humboldt Hill, CaliforniaThu, Sep 20, 9:08 PM PDT · 15350 days ago · 6 km deep · 78 km away
45. 2.737 km WNW of Indianola, CaliforniaThu, Sep 20, 10:24 PM PDT · 15350 days ago · 21 km deep · 48 km away
46. 2.40 km ESE of Humboldt Hill, CaliforniaFri, Sep 21, 6:40 AM PDT · 15350 days ago · 7 km deep · 78 km away
47. 3.365 km WSW of Ferndale, CaliforniaSat, Sep 22, 8:10 AM PDT · 15349 days ago · 11 km deep · 2 km away
48. 1.73 km SE of Ferndale, CaliforniaSun, Sep 23, 4:53 AM PDT · 15348 days ago · 7 km deep · 68 km away
49. 2.31 km ESE of Humboldt Hill, CaliforniaMon, Sep 24, 6:32 AM PDT · 15347 days ago · 6 km deep · 79 km away
50. 2.113 km S of Scotia, CaliforniaMon, Sep 24, 7:51 PM PDT · 15346 days ago · 30 km deep · 77 km away
51. 1.639 km W of Ferndale, CaliforniaTue, Sep 25, 3:47 AM PDT · 15346 days ago · 23 km deep · 30 km away
52. 1.64 km ESE of Ferndale, CaliforniaTue, Sep 25, 8:37 AM PDT · 15346 days ago · 20 km deep · 69 km away
53. 4.076 km W of Ferndale, CaliforniaWed, Sep 26, 3:13 AM PDT · 15345 days ago · 4 km deep · 15 km away
54. 2.41 km NE of Fields Landing, CaliforniaWed, Sep 26, 6:32 AM PDT · 15345 days ago · 1 km deep · 77 km away
55. 1.535 km SW of Ferndale, CaliforniaWed, Sep 26, 1:56 PM PDT · 15345 days ago · 17 km deep · 45 km away
56. 1.82 km NE of Weott, CaliforniaFri, Sep 28, 8:56 AM PDT · 15343 days ago · 23 km deep · 94 km away
57. 2.128 km SW of Ferndale, CaliforniaSat, Sep 29, 2:40 PM PDT · 15342 days ago · 17 km deep · 46 km away
58. 2.234 km SSW of Ferndale, CaliforniaSat, Sep 29, 7:47 PM PDT · 15341 days ago · 8 km deep · 51 km away
59. 2.524 km SW of Ferndale, CaliforniaSun, Sep 30, 12:59 AM PDT · 15341 days ago · 19 km deep · 46 km away
60. 2.670 km W of Indianola, CaliforniaMon, Oct 1, 7:02 AM PDT · 15340 days ago · 11 km deep · 42 km away

The first 60 of 71.

Before

1. 1.530 km W of Ferndale, CaliforniaSat, Aug 25, 10:59 PM PDT · 15376 days ago · 23 km deep · 40 km away
2. 3.784 km W of Ferndale, CaliforniaSat, Aug 25, 8:24 PM PDT · 15376 days ago · 5 km deep · 20 km away
3. 3.0off the coast of Northern CaliforniaSat, Aug 25, 3:51 PM PDT · 15377 days ago · 5 km deep · 30 km away
4. 2.4near the coast of Northern CaliforniaFri, Aug 24, 3:58 AM PDT · 15378 days ago · 25 km deep · 34 km away
5. 2.231 km SW of Ferndale, CaliforniaThu, Aug 23, 6:55 AM PDT · 15379 days ago · 24 km deep · 40 km away
6. 1.951 km SW of Ferndale, CaliforniaThu, Aug 23, 2:44 AM PDT · 15379 days ago · 15 km deep · 26 km away
7. 1.635 km SW of Ferndale, CaliforniaThu, Aug 23, 1:18 AM PDT · 15379 days ago · 25 km deep · 34 km away
8. 1.545 km SW of Ferndale, CaliforniaWed, Aug 22, 10:46 AM PDT · 15380 days ago · 13 km deep · 27 km away
9. 2.474 km WSW of Ferndale, CaliforniaTue, Aug 21, 7:29 AM PDT · 15381 days ago · 4 km deep · 9 km away
10. 1.619 km WNW of Indianola, CaliforniaMon, Aug 20, 8:55 PM PDT · 15381 days ago · 22 km deep · 58 km away
11. 2.646 km SW of Ferndale, CaliforniaMon, Aug 20, 3:19 PM PDT · 15382 days ago · 15 km deep · 29 km away
12. 2.881 km WNW of Ferndale, CaliforniaSun, Aug 19, 7:39 AM PDT · 15383 days ago · 0 km deep · 39 km away
13. 2.886 km W of Indianola, CaliforniaSat, Aug 18, 8:19 PM PDT · 15383 days ago · 4 km deep · 51 km away
14. 2.534 km SW of Ferndale, CaliforniaThu, Aug 16, 1:54 PM PDT · 15386 days ago · 24 km deep · 35 km away
15. 2.440 km SW of Ferndale, CaliforniaThu, Aug 16, 10:00 AM PDT · 15386 days ago · 25 km deep · 31 km away
16. 2.540 km SW of Ferndale, CaliforniaThu, Aug 16, 12:08 AM PDT · 15386 days ago · 16 km deep · 31 km away
17. 2.027 km SSW of Ferndale, CaliforniaWed, Aug 15, 12:58 PM PDT · 15387 days ago · 18 km deep · 53 km away
18. 1.612 km SSW of Scotia, CaliforniaWed, Aug 8, 2:14 PM PDT · 15394 days ago · 28 km deep · 72 km away
19. 2.044 km SW of Ferndale, CaliforniaMon, Aug 6, 7:56 AM PDT · 15396 days ago · 16 km deep · 32 km away
20. 1.537 km WSW of Ferndale, CaliforniaSun, Aug 5, 4:27 PM PDT · 15397 days ago · 35 km deep · 29 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1119721. Read Thu, Oct 1, 2026, 12:27 PM UTC.