M3.1 earthquake 128 km W of Ferndale, California

Magnitude

3.1 (md), minor

Local time

Mon, Oct 5, 1981, 7:09 PM PDT

UTC

1981-10-06 02:09:24 UTC

Depth

4.6 km (2.9 mi), shallow

Epicenter

40.501° N, 125.773° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 8.1 km horizontally, 19.7 km in depth

Magnitude uncertainty

±0.12

Depth from

From location

Station coverage gap

296°, poorly surrounded by stations

Stations used

37

• Ferndale, CaliforniaPopulation 1,369. Forecast128 kmW
• Fortuna, CaliforniaPopulation 12,000. Forecast137 kmW
• Chico, CaliforniaPopulation 121,345. Forecast345 kmWNW

After

1. 2.376 km WSW of Ferndale, CaliforniaMon, Oct 5, 7:11 PM PDT · 16422 days ago · 4 km deep · 54 km away
2. 2.565 km W of Indianola, CaliforniaTue, Oct 6, 2:55 AM PDT · 16422 days ago · 5 km deep · 72 km away
3. 1.643 km SW of Ferndale, CaliforniaTue, Oct 6, 1:04 PM PDT · 16422 days ago · 21 km deep · 99 km away
4. 2.541 km SW of Ferndale, CaliforniaWed, Oct 7, 11:46 PM PDT · 16420 days ago · 25 km deep · 100 km away
5. 2.282 km WSW of Ferndale, CaliforniaThu, Oct 8, 1:21 AM PDT · 16420 days ago · 5 km deep · 48 km away
6. 2.170 km WSW of Ferndale, CaliforniaFri, Oct 9, 12:02 PM PDT · 16419 days ago · 5 km deep · 62 km away
7. 2.7116 km W of Big Lagoon, CaliforniaSat, Oct 10, 3:23 PM PDT · 16418 days ago · 0 km deep · 83 km away
8. 1.779 km W of Ferndale, CaliforniaSun, Oct 11, 1:59 AM PDT · 16417 days ago · 5 km deep · 49 km away
9. 4.1128 km W of Trinidad, CaliforniaSun, Oct 11, 5:45 PM PDT · 16416 days ago · 5 km deep · 68 km away
10. 2.243 km SW of Ferndale, CaliforniaMon, Oct 12, 8:20 PM PDT · 16415 days ago · 17 km deep · 99 km away
11. 2.461 km WSW of Ferndale, CaliforniaWed, Oct 14, 6:01 AM PDT · 16414 days ago · 5 km deep · 70 km away
12. 1.754 km WSW of Ferndale, CaliforniaWed, Oct 14, 6:37 AM PDT · 16414 days ago · 30 km deep · 84 km away
13. 3.593 km WSW of Ferndale, CaliforniaFri, Oct 16, 8:26 PM PDT · 16411 days ago · 5 km deep · 38 km away
14. 2.3108 km WSW of Ferndale, CaliforniaFri, Oct 16, 10:56 PM PDT · 16411 days ago · 4 km deep · 26 km away
15. 1.643 km SW of Ferndale, CaliforniaSat, Oct 17, 8:38 AM PDT · 16411 days ago · 32 km deep · 94 km away
16. 2.550 km WNW of Ferndale, CaliforniaSat, Oct 17, 8:58 AM PDT · 16411 days ago · 3 km deep · 83 km away
17. 1.638 km WSW of Ferndale, CaliforniaMon, Oct 19, 8:48 AM PDT · 16409 days ago · 31 km deep · 94 km away
18. 2.6110 km WSW of Ferndale, CaliforniaTue, Oct 20, 2:55 AM PDT · 16408 days ago · 4 km deep · 27 km away
19. 3.0101 km W of Ferndale, CaliforniaWed, Oct 21, 12:06 AM PDT · 16407 days ago · 8 km deep · 26 km away
20. 1.850 km WSW of Ferndale, CaliforniaWed, Oct 21, 6:31 AM PDT · 16407 days ago · 30 km deep · 80 km away
21. 1.562 km SW of Ferndale, CaliforniaWed, Oct 21, 11:45 AM PDT · 16407 days ago · 5 km deep · 81 km away
22. 2.966 km W of Indianola, CaliforniaFri, Oct 23, 3:50 PM PDT · 16405 days ago · 5 km deep · 71 km away
23. 2.256 km WSW of Ferndale, CaliforniaFri, Oct 23, 6:50 PM PDT · 16404 days ago · 23 km deep · 79 km away
24. 1.945 km SW of Ferndale, CaliforniaTue, Oct 27, 3:18 PM PST · 16401 days ago · 20 km deep · 97 km away
25. 1.659 km SW of Ferndale, CaliforniaThu, Oct 29, 3:01 PM PST · 16399 days ago · 6 km deep · 83 km away
26. 2.059 km W of Ferndale, CaliforniaThu, Oct 29, 4:23 PM PST · 16398 days ago · 10 km deep · 68 km away
27. 2.647 km SW of Ferndale, CaliforniaFri, Oct 30, 10:01 AM PST · 16398 days ago · 21 km deep · 92 km away
28. 3.294 km W of Ferndale, CaliforniaSat, Oct 31, 7:20 PM PST · 16396 days ago · 18 km deep · 38 km away
29. 1.836 km WSW of Ferndale, CaliforniaSun, Nov 1, 12:23 AM PST · 16396 days ago · 25 km deep · 93 km away
30. 3.257 km WSW of Ferndale, CaliforniaMon, Nov 2, 1:33 PM PST · 16395 days ago · 20 km deep · 77 km away
31. 2.231 km WSW of Ferndale, CaliforniaFri, Nov 6, 10:14 PM PST · 16390 days ago · 16 km deep · 99 km away
32. 2.8125 km W of Ferndale, CaliforniaTue, Nov 10, 8:22 AM PST · 16387 days ago · 5 km deep · 3 km away
33. 2.9near the coast of Northern CaliforniaWed, Nov 11, 5:06 AM PST · 16386 days ago · 23 km deep · 100 km away
34. 2.639 km SW of Ferndale, CaliforniaWed, Nov 11, 5:23 AM PST · 16386 days ago · 35 km deep · 99 km away
35. 2.652 km W of Ferndale, CaliforniaSun, Nov 15, 5:18 PM PST · 16381 days ago · 14 km deep · 76 km away
36. 2.051 km SW of Ferndale, CaliforniaWed, Nov 18, 6:56 PM PST · 16378 days ago · 17 km deep · 92 km away
37. 2.4101 km W of Ferndale, CaliforniaThu, Nov 19, 10:46 PM PST · 16377 days ago · 5 km deep · 29 km away
38. 3.833 km W of Ferndale, CaliforniaFri, Nov 20, 3:59 PM PST · 16376 days ago · 25 km deep · 95 km away
39. 3.1101 km W of Indianola, CaliforniaMon, Nov 23, 4:54 AM PST · 16374 days ago · 5 km deep · 47 km away
40. 2.350 km SW of Ferndale, CaliforniaWed, Nov 25, 3:44 AM PST · 16372 days ago · 19 km deep · 90 km away
41. 2.8161 km W of Ferndale, CaliforniaSun, Nov 29, 9:33 AM PST · 16368 days ago · 5 km deep · 34 km away
42. 3.036 km WSW of Ferndale, CaliforniaSun, Nov 29, 3:41 PM PST · 16368 days ago · 38 km deep · 98 km away
43. 1.6174 km W of Ferndale, CaliforniaMon, Nov 30, 3:01 PM PST · 16367 days ago · 5 km deep · 48 km away
44. 2.449 km SW of Ferndale, CaliforniaWed, Dec 2, 2:53 AM PST · 16365 days ago · 23 km deep · 90 km away
45. 3.872 km W of Ferndale, CaliforniaWed, Dec 2, 10:46 AM PST · 16365 days ago · 43 km deep · 57 km away
46. 3.7109 km W of Ferndale, CaliforniaWed, Dec 2, 10:48 AM PST · 16365 days ago · 5 km deep · 29 km away

Before

1. 1.540 km SW of Ferndale, CaliforniaSun, Oct 4, 6:39 PM PDT · 16423 days ago · 30 km deep · 98 km away
2. 2.475 km W of Indianola, CaliforniaSun, Oct 4, 6:28 PM PDT · 16423 days ago · 7 km deep · 64 km away
3. 2.356 km W of Indianola, CaliforniaSat, Oct 3, 2:36 AM PDT · 16425 days ago · 24 km deep · 80 km away
4. 2.6off the coast of Northern CaliforniaThu, Oct 1, 5:11 AM PDT · 16427 days ago · 4 km deep · 19 km away
5. 1.838 km W of Ferndale, CaliforniaWed, Sep 30, 3:34 AM PDT · 16428 days ago · 20 km deep · 91 km away
6. 3.041 km SW of Ferndale, CaliforniaSat, Sep 26, 9:07 AM PDT · 16432 days ago · 20 km deep · 96 km away
7. 2.340 km SW of Ferndale, CaliforniaTue, Sep 22, 2:31 AM PDT · 16436 days ago · 28 km deep · 100 km away
8. 2.641 km SW of Ferndale, CaliforniaMon, Sep 21, 6:11 PM PDT · 16436 days ago · 26 km deep · 99 km away
9. 2.045 km SW of Ferndale, CaliforniaSat, Sep 19, 10:36 PM PDT · 16438 days ago · 24 km deep · 93 km away
10. 1.749 km WSW of Ferndale, CaliforniaSat, Sep 19, 5:19 AM PDT · 16439 days ago · 5 km deep · 88 km away
11. 2.160 km W of Ferndale, CaliforniaThu, Sep 17, 5:05 AM PDT · 16441 days ago · 15 km deep · 67 km away
12. 2.370 km W of Indianola, CaliforniaTue, Sep 15, 4:25 AM PDT · 16443 days ago · 4 km deep · 68 km away
13. 1.750 km WNW of Indianola, CaliforniaMon, Sep 14, 10:35 PM PDT · 16443 days ago · -1 km deep · 87 km away
14. 1.839 km WSW of Ferndale, CaliforniaMon, Sep 14, 9:24 AM PDT · 16444 days ago · 48 km deep · 93 km away
15. 2.983 km WSW of Ferndale, CaliforniaThu, Sep 10, 9:41 PM PDT · 16447 days ago · 11 km deep · 51 km away
16. 2.049 km W of Ferndale, CaliforniaWed, Sep 9, 11:43 AM PDT · 16449 days ago · 20 km deep · 79 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1068325. Read Tue, Sep 22, 2026, 11:17 AM UTC.