M2.4 earthquake 46 km SW of Ferndale, California

Magnitude

2.4 (md), micro

Local time

Sat, Apr 11, 1981, 12:56 AM PST

UTC

1981-04-11 08:56:42 UTC

Depth

16.0 km (10.0 mi), shallow

Epicenter

40.330° N, 124.704° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 3.1 km horizontally, 1.9 km in depth

Magnitude uncertainty

±0.09

Depth from

From location

Station coverage gap

267°, poorly surrounded by stations

Stations used

16

• Ferndale, CaliforniaPopulation 1,369. Forecast46 kmSW
• Fortuna, CaliforniaPopulation 12,000. Forecast55 kmWSW
• Chico, CaliforniaPopulation 121,345. Forecast253 kmWNW

After

1. 1.712 km NE of Myers Flat, CaliforniaSat, Apr 11, 1:02 AM PST · 16601 days ago · 0 km deep · 79 km away
2. 1.951 km SW of Ferndale, CaliforniaSat, Apr 11, 10:24 PM PST · 16600 days ago · 15 km deep · 6 km away
3. 1.626 km NW of Shelter Cove, CaliforniaSun, Apr 12, 12:36 AM PST · 16600 days ago · 4 km deep · 40 km away
4. 1.738 km SW of Ferndale, CaliforniaSun, Apr 12, 2:43 AM PST · 16599 days ago · 16 km deep · 13 km away
5. 1.74 km NNE of Redway, CaliforniaSun, Apr 12, 7:12 AM PST · 16599 days ago · 4 km deep · 79 km away
6. 1.821 km WSW of Burnt Ranch, CaliforniaSun, Apr 12, 7:34 AM PST · 16599 days ago · 23 km deep · 95 km away
7. 1.827 km W of Trinidad, CaliforniaSun, Apr 12, 4:11 PM PST · 16599 days ago · 25 km deep · 80 km away
8. 1.738 km SW of Ferndale, CaliforniaMon, Apr 13, 6:45 AM PST · 16598 days ago · 24 km deep · 11 km away
9. 2.140 km SW of Ferndale, CaliforniaMon, Apr 13, 9:44 AM PST · 16598 days ago · 24 km deep · 10 km away
10. 4.336 km SW of Ferndale, CaliforniaMon, Apr 13, 2:16 PM PST · 16598 days ago · 23 km deep · 13 km away
11. 1.7near the coast of Northern CaliforniaMon, Apr 13, 3:51 PM PST · 16598 days ago · 24 km deep · 13 km away
12. 3.137 km SW of Ferndale, CaliforniaMon, Apr 13, 8:41 PM PST · 16598 days ago · 27 km deep · 13 km away
13. 2.365 km W of Indianola, CaliforniaTue, Apr 14, 12:55 AM PST · 16598 days ago · 20 km deep · 55 km away
14. 2.236 km SW of Ferndale, CaliforniaTue, Apr 14, 1:00 AM PST · 16598 days ago · 27 km deep · 14 km away
15. 1.73 km NNE of Alderpoint, CaliforniaTue, Apr 14, 1:19 PM PST · 16597 days ago · 33 km deep · 94 km away
16. 1.527 km SSW of Ferndale, CaliforniaTue, Apr 14, 2:01 PM PST · 16597 days ago · 16 km deep · 22 km away
17. 2.038 km SW of Ferndale, CaliforniaTue, Apr 14, 4:26 PM PST · 16597 days ago · 21 km deep · 11 km away
18. 1.837 km SW of Ferndale, CaliforniaTue, Apr 14, 5:34 PM PST · 16597 days ago · 21 km deep · 11 km away
19. 1.511 km W of Mad River, CaliforniaTue, Apr 14, 5:34 PM PST · 16597 days ago · 0 km deep · 90 km away
20. 2.341 km SW of Ferndale, CaliforniaWed, Apr 15, 7:31 AM PST · 16596 days ago · 24 km deep · 6 km away
21. 1.937 km SW of Ferndale, CaliforniaWed, Apr 15, 10:04 AM PST · 16596 days ago · 25 km deep · 13 km away
22. 2.942 km W of Trinidad, CaliforniaThu, Apr 16, 11:04 AM PST · 16595 days ago · 16 km deep · 77 km away
23. 4.2126 km W of Ferndale, CaliforniaThu, Apr 16, 5:31 PM PST · 16595 days ago · 5 km deep · 88 km away
24. 2.836 km SW of Ferndale, CaliforniaThu, Apr 16, 5:40 PM PST · 16595 days ago · 26 km deep · 14 km away
25. 1.534 km SW of Scotia, CaliforniaFri, Apr 17, 1:32 PM PST · 16594 days ago · 12 km deep · 28 km away
26. 2.938 km SW of Ferndale, CaliforniaFri, Apr 17, 5:26 PM PST · 16594 days ago · 20 km deep · 10 km away
27. 2.639 km SW of Ferndale, CaliforniaFri, Apr 17, 8:24 PM PST · 16594 days ago · 23 km deep · 10 km away
28. 3.849 km WSW of Ferndale, CaliforniaSat, Apr 18, 5:17 AM PST · 16593 days ago · 18 km deep · 9 km away
29. 1.647 km SW of Ferndale, CaliforniaSat, Apr 18, 7:52 AM PST · 16593 days ago · 13 km deep · 4 km away
30. 1.939 km SW of Ferndale, CaliforniaSat, Apr 18, 10:37 AM PST · 16593 days ago · 20 km deep · 11 km away
31. 2.24 km SSW of Westhaven-Moonstone, CaliforniaSat, Apr 18, 12:18 PM PST · 16593 days ago · 15 km deep · 89 km away
32. 2.020 km W of Big Lagoon, CaliforniaSat, Apr 18, 7:43 PM PST · 16593 days ago · 8 km deep · 93 km away
33. 1.725 km W of Big Lagoon, CaliforniaSat, Apr 18, 9:16 PM PST · 16593 days ago · 3 km deep · 93 km away
34. 2.13 km SW of Loleta, CaliforniaSun, Apr 19, 3:56 AM PST · 16592 days ago · 21 km deep · 49 km away
35. 1.540 km SW of Ferndale, CaliforniaSun, Apr 19, 8:50 AM PST · 16592 days ago · 23 km deep · 11 km away
36. 1.811 km WSW of Mad River, CaliforniaSun, Apr 19, 4:04 PM PST · 16592 days ago · -1 km deep · 92 km away
37. 2.1near the coast of Northern CaliforniaSun, Apr 19, 5:16 PM PST · 16592 days ago · 21 km deep · 25 km away
38. 1.634 km SW of Ferndale, CaliforniaSun, Apr 19, 8:53 PM PST · 16592 days ago · 21 km deep · 16 km away
39. 2.99 km WNW of McKinleyville, CaliforniaSun, Apr 19, 10:22 PM PST · 16592 days ago · 46 km deep · 83 km away
40. 3.2near the coast of Northern CaliforniaSun, Apr 19, 11:23 PM PST · 16592 days ago · 25 km deep · 6 km away
41. 1.622 km SE of Indianola, CaliforniaMon, Apr 20, 12:53 AM PST · 16592 days ago · 22 km deep · 82 km away
42. 1.624 km WNW of Samoa, CaliforniaMon, Apr 20, 2:59 AM PST · 16591 days ago · 14 km deep · 71 km away
43. 2.437 km SW of Ferndale, CaliforniaMon, Apr 20, 8:52 AM PST · 16591 days ago · 29 km deep · 12 km away
44. 1.921 km WNW of Manila, CaliforniaMon, Apr 20, 1:15 PM PST · 16591 days ago · 17 km deep · 73 km away
45. 2.422 km SE of Indianola, CaliforniaMon, Apr 20, 3:02 PM PST · 16591 days ago · 21 km deep · 81 km away
46. 3.540 km SW of Ferndale, CaliforniaMon, Apr 20, 3:44 PM PST · 16591 days ago · 27 km deep · 7 km away
47. 2.340 km SW of Ferndale, CaliforniaMon, Apr 20, 5:00 PM PST · 16591 days ago · 27 km deep · 7 km away
48. 1.717 km NE of Redcrest, CaliforniaMon, Apr 20, 6:13 PM PST · 16591 days ago · 26 km deep · 77 km away
49. 1.830 km SW of Scotia, CaliforniaMon, Apr 20, 6:26 PM PST · 16591 days ago · 13 km deep · 30 km away
50. 2.220 km SSW of Scotia, CaliforniaTue, Apr 21, 2:54 AM PST · 16590 days ago · 4 km deep · 44 km away
51. 2.24 km SW of Loleta, CaliforniaTue, Apr 21, 10:38 AM PST · 16590 days ago · 19 km deep · 49 km away
52. 1.844 km SW of Ferndale, CaliforniaWed, Apr 22, 1:08 AM PST · 16590 days ago · 28 km deep · 7 km away
53. 2.344 km SW of Ferndale, CaliforniaWed, Apr 22, 1:21 AM PST · 16589 days ago · 18 km deep · 3 km away
54. 3.487 km WSW of Ferndale, CaliforniaWed, Apr 22, 3:43 AM PST · 16589 days ago · 5 km deep · 49 km away
55. 1.69 km WNW of Mad River, CaliforniaWed, Apr 22, 4:31 AM PST · 16589 days ago · 5 km deep · 93 km away
56. 3.138 km SW of Ferndale, CaliforniaWed, Apr 22, 8:37 AM PST · 16589 days ago · 27 km deep · 9 km away
57. 1.642 km SW of Ferndale, CaliforniaWed, Apr 22, 11:40 AM PST · 16589 days ago · 27 km deep · 5 km away
58. 2.536 km SSW of Ferndale, CaliforniaWed, Apr 22, 4:47 PM PST · 16589 days ago · 25 km deep · 21 km away
59. 2.794 km W of Ferndale, CaliforniaWed, Apr 22, 11:22 PM PST · 16589 days ago · 4 km deep · 62 km away
60. 2.144 km SW of Ferndale, CaliforniaThu, Apr 23, 12:50 AM PST · 16589 days ago · 18 km deep · 2 km away

The first 60 of 167.

Before

1. 1.810 km W of Indianola, CaliforniaFri, Apr 10, 11:59 PM PST · 16601 days ago · 8 km deep · 49 km away
2. 2.424 km SW of Scotia, CaliforniaFri, Apr 10, 8:58 PM PST · 16601 days ago · 30 km deep · 33 km away
3. 2.0108 km W of Ferndale, CaliforniaFri, Apr 10, 5:42 PM PST · 16601 days ago · 5 km deep · 82 km away
4. 2.142 km W of Big Lagoon, CaliforniaFri, Apr 10, 8:18 AM PST · 16601 days ago · 5 km deep · 96 km away
5. 2.434 km SW of Ferndale, CaliforniaThu, Apr 9, 10:22 PM PST · 16602 days ago · 37 km deep · 15 km away
6. 1.826 km SSW of Ferndale, CaliforniaThu, Apr 9, 7:30 PM PST · 16602 days ago · 33 km deep · 24 km away
7. 1.936 km SW of Ferndale, CaliforniaThu, Apr 9, 10:01 AM PST · 16602 days ago · 17 km deep · 11 km away
8. 3.038 km W of Trinidad, CaliforniaThu, Apr 9, 2:38 AM PST · 16602 days ago · 22 km deep · 85 km away
9. 1.928 km SSW of Ferndale, CaliforniaThu, Apr 9, 12:01 AM PST · 16603 days ago · 18 km deep · 22 km away
10. 2.338 km SW of Ferndale, CaliforniaWed, Apr 8, 4:37 PM PST · 16603 days ago · 25 km deep · 10 km away
11. 1.8off the coast of Northern CaliforniaWed, Apr 8, 5:36 AM PST · 16603 days ago · 4 km deep · 37 km away
12. 2.420 km SSW of Scotia, CaliforniaTue, Apr 7, 7:22 AM PST · 16604 days ago · 11 km deep · 40 km away
13. 2.537 km SSW of Ferndale, CaliforniaMon, Apr 6, 2:57 PM PST · 16605 days ago · 14 km deep · 19 km away
14. 2.035 km SW of Ferndale, CaliforniaSun, Apr 5, 4:17 PM PST · 16606 days ago · 35 km deep · 13 km away
15. 1.529 km SW of Scotia, CaliforniaSun, Apr 5, 1:32 AM PST · 16606 days ago · 19 km deep · 33 km away
16. 1.812 km NE of Myers Flat, CaliforniaSat, Apr 4, 8:17 PM PST · 16607 days ago · -1 km deep · 79 km away
17. 1.517 km NE of Redcrest, CaliforniaSat, Apr 4, 7:47 PM PST · 16607 days ago · 26 km deep · 79 km away
18. 1.818 km W of Ferndale, CaliforniaSat, Apr 4, 4:54 AM PST · 16607 days ago · 22 km deep · 32 km away
19. 2.790 km W of Ferndale, CaliforniaFri, Apr 3, 2:38 AM PST · 16608 days ago · 5 km deep · 54 km away
20. 3.267 km W of Trinidad, CaliforniaThu, Apr 2, 4:59 PM PST · 16609 days ago · 5 km deep · 93 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1062403. Read Tue, Sep 22, 2026, 8:47 PM UTC.