M2.1 earthquake 125 km W of Ferndale, California

Magnitude

2.1 (md), micro

Local time

Wed, Apr 29, 1981, 10:43 PM PDT

UTC

1981-04-30 05:43:31 UTC

Depth

4.6 km (2.9 mi), shallow

Epicenter

40.410° N, 125.728° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 10.3 km horizontally, 13.7 km in depth

Magnitude uncertainty

±0.25

Depth from

From location

Station coverage gap

317°, poorly surrounded by stations

Stations used

12

• Ferndale, CaliforniaPopulation 1,369. Forecast125 kmW
• Fortuna, CaliforniaPopulation 12,000. Forecast135 kmW
• Santa Rosa, CaliforniaPopulation 178,127. Forecast339 kmNW

After

1. 1.642 km SW of Ferndale, CaliforniaWed, Apr 29, 11:16 PM PDT · 16589 days ago · 25 km deep · 94 km away
2. 2.230 km WSW of Ferndale, CaliforniaSun, May 3, 10:59 AM PDT · 16585 days ago · 23 km deep · 97 km away
3. 2.597 km WSW of Ferndale, CaliforniaMon, May 4, 4:40 PM PDT · 16584 days ago · 5 km deep · 29 km away
4. 3.295 km W of Ferndale, CaliforniaMon, May 4, 6:06 PM PDT · 16584 days ago · 8 km deep · 30 km away
5. 3.8131 km W of Ferndale, CaliforniaSat, May 9, 11:11 AM PDT · 16579 days ago · 5 km deep · 16 km away
6. 1.737 km WSW of Ferndale, CaliforniaSat, May 9, 11:22 AM PDT · 16579 days ago · 29 km deep · 92 km away
7. 2.773 km WSW of Ferndale, CaliforniaWed, May 13, 2:35 AM PDT · 16575 days ago · 64 km deep · 53 km away
8. 2.378 km WNW of Ferndale, CaliforniaThu, May 14, 3:48 PM PDT · 16574 days ago · 8 km deep · 59 km away
9. 3.7217 km WSW of Ferndale, CaliforniaSat, May 16, 6:12 PM PDT · 16572 days ago · 5 km deep · 92 km away
10. 3.339 km SW of Ferndale, CaliforniaSun, May 17, 10:21 PM PDT · 16571 days ago · 24 km deep · 96 km away
11. 3.338 km SW of Ferndale, CaliforniaSat, May 23, 11:43 AM PDT · 16565 days ago · 27 km deep · 97 km away
12. 3.150 km WSW of Ferndale, CaliforniaMon, May 25, 6:38 AM PDT · 16563 days ago · 34 km deep · 81 km away
13. 4.658 km WSW of Ferndale, CaliforniaTue, May 26, 4:41 AM PDT · 16562 days ago · 2 km deep · 70 km away
14. 2.873 km WNW of Ferndale, CaliforniaWed, May 27, 2:49 AM PDT · 16561 days ago · 14 km deep · 64 km away
15. 2.341 km SW of Ferndale, CaliforniaWed, May 27, 3:33 AM PDT · 16561 days ago · 21 km deep · 94 km away
16. 2.239 km SW of Ferndale, CaliforniaFri, May 29, 2:01 AM PDT · 16559 days ago · 24 km deep · 97 km away
17. 2.843 km SW of Ferndale, CaliforniaFri, May 29, 8:47 AM PDT · 16559 days ago · 21 km deep · 90 km away
18. 1.645 km SW of Ferndale, CaliforniaFri, May 29, 11:53 PM PDT · 16558 days ago · 18 km deep · 90 km away
19. 2.464 km SW of Ferndale, CaliforniaMon, Jun 1, 5:52 PM PDT · 16556 days ago · 4 km deep · 74 km away
20. 2.342 km SW of Ferndale, CaliforniaWed, Jun 3, 2:45 AM PDT · 16554 days ago · 23 km deep · 93 km away
21. 2.137 km WNW of Ferndale, CaliforniaWed, Jun 3, 4:37 PM PDT · 16554 days ago · 20 km deep · 92 km away
22. 2.240 km WNW of Ferndale, CaliforniaWed, Jun 3, 4:47 PM PDT · 16554 days ago · 19 km deep · 90 km away
23. 2.338 km WNW of Indianola, CaliforniaThu, Jun 4, 3:48 AM PDT · 16553 days ago · 9 km deep · 99 km away
24. 2.637 km SW of Ferndale, CaliforniaFri, Jun 5, 2:20 PM PDT · 16552 days ago · 28 km deep · 98 km away
25. 2.384 km WNW of Samoa, CaliforniaSat, Jun 6, 2:46 PM PDT · 16551 days ago · 4 km deep · 84 km away
26. 2.554 km WNW of Samoa, CaliforniaTue, Jun 9, 1:50 PM PDT · 16548 days ago · 14 km deep · 100 km away
27. 3.398 km WSW of Ferndale, CaliforniaTue, Jun 9, 2:34 PM PDT · 16548 days ago · 65 km deep · 32 km away
28. 2.197 km WSW of Ferndale, CaliforniaWed, Jun 10, 1:57 AM PDT · 16547 days ago · 7 km deep · 29 km away
29. 3.3106 km W of Trinidad, CaliforniaWed, Jun 10, 2:48 PM PDT · 16547 days ago · 11 km deep · 79 km away
30. 2.3111 km W of Ferndale, CaliforniaThu, Jun 11, 12:54 AM PDT · 16546 days ago · 4 km deep · 14 km away
31. 2.139 km SW of Ferndale, CaliforniaThu, Jun 11, 9:07 AM PDT · 16546 days ago · 28 km deep · 96 km away
32. 1.951 km SW of Ferndale, CaliforniaSat, Jun 13, 4:47 AM PDT · 16544 days ago · 45 km deep · 82 km away
33. 4.3near the coast of Northern CaliforniaSun, Jun 14, 4:53 PM PDT · 16543 days ago · 27 km deep · 96 km away
34. 1.639 km SW of Ferndale, CaliforniaSun, Jun 14, 5:23 PM PDT · 16543 days ago · 24 km deep · 96 km away
35. 2.338 km SW of Ferndale, CaliforniaSun, Jun 14, 5:44 PM PDT · 16543 days ago · 22 km deep · 97 km away
36. 2.141 km SW of Ferndale, CaliforniaSun, Jun 14, 7:50 PM PDT · 16543 days ago · 21 km deep · 95 km away
37. 2.638 km SW of Ferndale, CaliforniaSun, Jun 14, 9:04 PM PDT · 16543 days ago · 23 km deep · 97 km away
38. 2.537 km SW of Ferndale, CaliforniaSun, Jun 14, 9:36 PM PDT · 16543 days ago · 29 km deep · 99 km away
39. 3.431 km WSW of Ferndale, CaliforniaMon, Jun 15, 7:53 AM PDT · 16542 days ago · 27 km deep · 97 km away
40. 3.039 km SW of Ferndale, CaliforniaMon, Jun 15, 8:27 PM PDT · 16542 days ago · 26 km deep · 96 km away
41. 2.739 km SW of Ferndale, CaliforniaMon, Jun 15, 11:08 PM PDT · 16542 days ago · 24 km deep · 96 km away
42. 2.537 km SW of Ferndale, CaliforniaTue, Jun 16, 1:39 AM PDT · 16541 days ago · 22 km deep · 99 km away
43. 2.237 km SW of Ferndale, CaliforniaWed, Jun 17, 12:03 PM PDT · 16540 days ago · 35 km deep · 99 km away
44. 2.437 km SW of Ferndale, CaliforniaThu, Jun 18, 5:56 AM PDT · 16539 days ago · 25 km deep · 98 km away
45. 3.586 km WSW of Ferndale, CaliforniaFri, Jun 19, 1:39 AM PDT · 16538 days ago · 68 km deep · 41 km away
46. 2.067 km WSW of Ferndale, CaliforniaFri, Jun 19, 8:31 AM PDT · 16538 days ago · 5 km deep · 58 km away
47. 2.052 km W of Ferndale, CaliforniaFri, Jun 19, 9:03 AM PDT · 16538 days ago · 12 km deep · 74 km away
48. 3.871 km WSW of Ferndale, CaliforniaSat, Jun 20, 6:32 AM PDT · 16537 days ago · 0 km deep · 55 km away
49. 3.038 km SW of Ferndale, CaliforniaSat, Jun 20, 11:25 AM PDT · 16537 days ago · 23 km deep · 98 km away
50. 3.159 km WSW of Ferndale, CaliforniaSat, Jun 20, 9:24 PM PDT · 16537 days ago · 14 km deep · 68 km away
51. 4.087 km W of Ferndale, CaliforniaTue, Jun 23, 2:50 PM PDT · 16534 days ago · 5 km deep · 38 km away
52. 2.140 km SW of Ferndale, CaliforniaTue, Jun 23, 5:15 PM PDT · 16534 days ago · 27 km deep · 94 km away
53. 3.263 km WSW of Ferndale, CaliforniaWed, Jun 24, 12:36 AM PDT · 16533 days ago · 24 km deep · 65 km away
54. 2.041 km SW of Ferndale, CaliforniaWed, Jun 24, 4:40 AM PDT · 16533 days ago · 29 km deep · 95 km away
55. 1.938 km WNW of Indianola, CaliforniaWed, Jun 24, 6:51 AM PDT · 16533 days ago · 18 km deep · 99 km away
56. 3.542 km SW of Ferndale, CaliforniaWed, Jun 24, 7:15 AM PDT · 16533 days ago · 27 km deep · 91 km away
57. 2.583 km W of Trinidad, CaliforniaWed, Jun 24, 7:34 AM PDT · 16533 days ago · 5 km deep · 94 km away
58. 2.480 km W of Ferndale, CaliforniaWed, Jun 24, 12:11 PM PDT · 16533 days ago · 4 km deep · 45 km away
59. 3.1122 km W of Ferndale, CaliforniaThu, Jun 25, 11:49 AM PDT · 16532 days ago · 5 km deep · 34 km away
60. 3.3116 km W of Ferndale, CaliforniaThu, Jun 25, 12:00 PM PDT · 16532 days ago · 5 km deep · 37 km away

The first 60 of 61.

Before

1. 1.8near the coast of Northern CaliforniaSun, Apr 26, 7:55 PM PDT · 16592 days ago · 8 km deep · 80 km away
2. 1.939 km WSW of Ferndale, CaliforniaSat, Apr 25, 4:57 PM PST · 16593 days ago · 15 km deep · 86 km away
3. 1.885 km W of Big Lagoon, CaliforniaSat, Apr 25, 12:53 PM PST · 16593 days ago · 5 km deep · 100 km away
4. 1.9115 km W of Ferndale, CaliforniaFri, Apr 24, 4:58 PM PST · 16594 days ago · 4 km deep · 11 km away
5. 1.938 km SW of Ferndale, CaliforniaFri, Apr 24, 9:59 AM PST · 16594 days ago · 25 km deep · 96 km away
6. 2.038 km SW of Ferndale, CaliforniaThu, Apr 23, 5:40 AM PST · 16595 days ago · 21 km deep · 96 km away
7. 2.144 km SW of Ferndale, CaliforniaThu, Apr 23, 12:50 AM PST · 16595 days ago · 18 km deep · 89 km away
8. 2.794 km W of Ferndale, CaliforniaWed, Apr 22, 11:22 PM PST · 16595 days ago · 4 km deep · 33 km away
9. 1.642 km SW of Ferndale, CaliforniaWed, Apr 22, 11:40 AM PST · 16596 days ago · 27 km deep · 92 km away
10. 3.138 km SW of Ferndale, CaliforniaWed, Apr 22, 8:37 AM PST · 16596 days ago · 27 km deep · 96 km away
11. 3.487 km WSW of Ferndale, CaliforniaWed, Apr 22, 3:43 AM PST · 16596 days ago · 5 km deep · 39 km away
12. 2.344 km SW of Ferndale, CaliforniaWed, Apr 22, 1:21 AM PST · 16596 days ago · 18 km deep · 90 km away
13. 1.844 km SW of Ferndale, CaliforniaWed, Apr 22, 1:08 AM PST · 16596 days ago · 28 km deep · 94 km away
14. 2.340 km SW of Ferndale, CaliforniaMon, Apr 20, 5:00 PM PST · 16598 days ago · 27 km deep · 94 km away
15. 3.540 km SW of Ferndale, CaliforniaMon, Apr 20, 3:44 PM PST · 16598 days ago · 27 km deep · 95 km away
16. 2.437 km SW of Ferndale, CaliforniaMon, Apr 20, 8:52 AM PST · 16598 days ago · 29 km deep · 99 km away
17. 3.2near the coast of Northern CaliforniaSun, Apr 19, 11:23 PM PST · 16598 days ago · 25 km deep · 94 km away
18. 2.1near the coast of Northern CaliforniaSun, Apr 19, 5:16 PM PST · 16599 days ago · 21 km deep · 88 km away
19. 1.540 km SW of Ferndale, CaliforniaSun, Apr 19, 8:50 AM PST · 16599 days ago · 23 km deep · 98 km away
20. 1.939 km SW of Ferndale, CaliforniaSat, Apr 18, 10:37 AM PST · 16600 days ago · 20 km deep · 98 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1063166. Read Tue, Sep 29, 2026, 5:49 PM UTC.