M1.6 earthquake 42 km SW of Ferndale, California

Magnitude

1.6 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Wed, Apr 29, 1981, 11:16 PM PDT

UTC

1981-04-30 06:16:00 UTC

Depth

25.4 km (15.8 mi), shallow

Epicenter

40.314° N, 124.623° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.3 km horizontally, 7.0 km in depth

Depth from

From location

Station coverage gap

273°, poorly surrounded by stations

Stations used

4

• Ferndale, CaliforniaPopulation 1,369. Forecast42 kmSW
• Fortuna, CaliforniaPopulation 12,000. Forecast51 kmSW
• Chico, CaliforniaPopulation 121,345. Forecast246 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast896 kmNW

After

1. 1.811 km SW of Ferndale, CaliforniaFri, May 1, 11:07 AM PDT · 16589 days ago · 25 km deep · 30 km away
2. 2.226 km WNW of Manila, CaliforniaSat, May 2, 5:04 AM PDT · 16588 days ago · 2 km deep · 74 km away
3. 1.914 km WSW of Ferndale, CaliforniaSat, May 2, 10:50 AM PDT · 16588 days ago · 19 km deep · 28 km away
4. 2.434 km SW of Ferndale, CaliforniaSun, May 3, 5:30 AM PDT · 16587 days ago · 28 km deep · 9 km away
5. 1.522 km SSW of Ferndale, CaliforniaSun, May 3, 8:27 AM PDT · 16587 days ago · 21 km deep · 24 km away
6. 2.230 km WSW of Ferndale, CaliforniaSun, May 3, 10:59 AM PDT · 16587 days ago · 23 km deep · 17 km away
7. 1.69 km W of Mad River, CaliforniaSun, May 3, 1:30 PM PDT · 16587 days ago · 4 km deep · 86 km away
8. 1.816 km E of Hydesville, CaliforniaSun, May 3, 8:30 PM PDT · 16587 days ago · 92 km deep · 67 km away
9. 2.597 km WSW of Ferndale, CaliforniaMon, May 4, 4:40 PM PDT · 16586 days ago · 5 km deep · 66 km away
10. 3.295 km W of Ferndale, CaliforniaMon, May 4, 6:06 PM PDT · 16586 days ago · 8 km deep · 65 km away
11. 3.437 km SW of Ferndale, CaliforniaMon, May 4, 11:03 PM PDT · 16586 days ago · 26 km deep · 6 km away
12. 2.122 km W of Ferndale, CaliforniaThu, May 7, 12:05 PM PDT · 16583 days ago · 21 km deep · 27 km away
13. 1.737 km WSW of Ferndale, CaliforniaSat, May 9, 11:22 AM PDT · 16581 days ago · 29 km deep · 10 km away
14. 2.230 km SW of Scotia, CaliforniaSat, May 9, 5:23 PM PDT · 16581 days ago · 18 km deep · 23 km away
15. 1.928 km SW of Ferndale, CaliforniaMon, May 11, 4:20 AM PDT · 16579 days ago · 26 km deep · 13 km away
16. 2.236 km SW of Ferndale, CaliforniaMon, May 11, 5:14 PM PDT · 16579 days ago · 27 km deep · 7 km away
17. 1.816 km ENE of Redcrest, CaliforniaTue, May 12, 1:51 AM PDT · 16578 days ago · 0 km deep · 74 km away
18. 1.629 km SW of Scotia, CaliforniaWed, May 13, 2:16 AM PDT · 16577 days ago · 27 km deep · 24 km away
19. 2.773 km WSW of Ferndale, CaliforniaWed, May 13, 2:35 AM PDT · 16577 days ago · 64 km deep · 41 km away
20. 2.122 km W of Indianola, CaliforniaWed, May 13, 3:15 AM PDT · 16577 days ago · 20 km deep · 45 km away
21. 2.35 km SW of Phillipsville, CaliforniaWed, May 13, 5:25 PM PDT · 16577 days ago · 19 km deep · 70 km away
22. 1.736 km SW of Ferndale, CaliforniaWed, May 13, 9:53 PM PDT · 16577 days ago · 35 km deep · 7 km away
23. 2.23 km W of Blue Lake, CaliforniaThu, May 14, 12:21 AM PDT · 16577 days ago · 0 km deep · 81 km away
24. 1.729 km SSW of Ferndale, CaliforniaThu, May 14, 10:50 AM PDT · 16576 days ago · 35 km deep · 16 km away
25. 2.425 km SSW of Ferndale, CaliforniaThu, May 14, 3:36 PM PDT · 16576 days ago · 32 km deep · 21 km away
26. 2.378 km WNW of Ferndale, CaliforniaThu, May 14, 3:48 PM PDT · 16576 days ago · 8 km deep · 65 km away
27. 1.625 km SW of Scotia, CaliforniaThu, May 14, 4:11 PM PDT · 16576 days ago · 29 km deep · 24 km away
28. 2.825 km SW of Ferndale, CaliforniaThu, May 14, 7:21 PM PDT · 16576 days ago · 27 km deep · 16 km away
29. 1.71 km NE of Humboldt Hill, CaliforniaFri, May 15, 7:11 AM PDT · 16575 days ago · 1 km deep · 60 km away
30. 1.73 km W of Scotia, CaliforniaFri, May 15, 1:17 PM PDT · 16575 days ago · 20 km deep · 45 km away
31. 1.634 km SW of Ferndale, CaliforniaFri, May 15, 4:25 PM PDT · 16575 days ago · 23 km deep · 11 km away
32. 2.214 km WSW of Trinidad, CaliforniaFri, May 15, 4:46 PM PDT · 16575 days ago · 5 km deep · 82 km away
33. 1.811 km W of Indianola, CaliforniaFri, May 15, 7:17 PM PDT · 16575 days ago · 12 km deep · 48 km away
34. 2.911 km W of Indianola, CaliforniaFri, May 15, 8:58 PM PDT · 16575 days ago · 11 km deep · 47 km away
35. 1.88 km WNW of Indianola, CaliforniaSun, May 17, 11:08 AM PDT · 16573 days ago · 4 km deep · 50 km away
36. 3.339 km SW of Ferndale, CaliforniaSun, May 17, 10:21 PM PDT · 16573 days ago · 24 km deep · 3 km away
37. 2.47 km NNW of Manila, CaliforniaMon, May 18, 11:27 AM PDT · 16572 days ago · 6 km deep · 76 km away
38. 2.23 km NNW of Redway, CaliforniaMon, May 18, 2:35 PM PDT · 16572 days ago · 17 km deep · 69 km away
39. 2.916 km SW of Mad River, CaliforniaThu, May 21, 5:08 AM PDT · 16569 days ago · 21 km deep · 82 km away
40. 2.917 km SW of Mad River, CaliforniaThu, May 21, 5:45 AM PDT · 16569 days ago · 22 km deep · 81 km away
41. 1.816 km NE of Miranda, CaliforniaThu, May 21, 6:34 AM PDT · 16569 days ago · 20 km deep · 79 km away
42. 4.227 km W of Trinidad, CaliforniaThu, May 21, 6:19 PM PDT · 16569 days ago · 23 km deep · 88 km away
43. 2.216 km SW of Mad River, CaliforniaFri, May 22, 2:14 AM PDT · 16568 days ago · 22 km deep · 81 km away
44. 1.57 km SSW of Mad River, CaliforniaFri, May 22, 2:15 AM PDT · 16568 days ago · 27 km deep · 92 km away
45. 2.117 km SW of Mad River, CaliforniaFri, May 22, 3:36 AM PDT · 16568 days ago · 21 km deep · 81 km away
46. 1.617 km ENE of Hydesville, CaliforniaFri, May 22, 7:34 AM PDT · 16568 days ago · 21 km deep · 69 km away
47. 2.417 km SW of Mad River, CaliforniaFri, May 22, 5:07 PM PDT · 16568 days ago · 21 km deep · 81 km away
48. 3.338 km SW of Ferndale, CaliforniaSat, May 23, 11:43 AM PDT · 16567 days ago · 27 km deep · 4 km away
49. 2.83 km SSW of Scotia, CaliforniaSat, May 23, 7:04 PM PDT · 16567 days ago · 9 km deep · 45 km away
50. 2.911 km S of Scotia, CaliforniaSat, May 23, 7:10 PM PDT · 16567 days ago · 12 km deep · 44 km away
51. 3.150 km WSW of Ferndale, CaliforniaMon, May 25, 6:38 AM PDT · 16565 days ago · 34 km deep · 14 km away
52. 1.914 km NE of Hydesville, CaliforniaMon, May 25, 9:54 AM PDT · 16565 days ago · 24 km deep · 66 km away
53. 1.9Northern CaliforniaMon, May 25, 5:41 PM PDT · 16565 days ago · 22 km deep · 69 km away
54. 4.658 km WSW of Ferndale, CaliforniaTue, May 26, 4:41 AM PDT · 16564 days ago · 2 km deep · 25 km away
55. 3.523 km SSW of Ferndale, CaliforniaTue, May 26, 5:12 AM PDT · 16564 days ago · 27 km deep · 20 km away
56. 2.224 km SW of Ferndale, CaliforniaTue, May 26, 5:20 AM PDT · 16564 days ago · 27 km deep · 18 km away
57. 2.1near the coast of Northern CaliforniaTue, May 26, 7:52 PM PDT · 16564 days ago · 31 km deep · 19 km away
58. 2.873 km WNW of Ferndale, CaliforniaWed, May 27, 2:49 AM PDT · 16563 days ago · 14 km deep · 63 km away
59. 2.341 km SW of Ferndale, CaliforniaWed, May 27, 3:33 AM PDT · 16563 days ago · 21 km deep · 0 km away
60. 2.015 km SSW of Ferndale, CaliforniaWed, May 27, 9:26 AM PDT · 16563 days ago · 28 km deep · 30 km away

The first 60 of 168.

Before

1. 2.1125 km W of Ferndale, CaliforniaWed, Apr 29, 10:43 PM PDT · 16591 days ago · 5 km deep · 94 km away
2. 1.737 km SW of Ferndale, CaliforniaTue, Apr 28, 11:20 PM PDT · 16592 days ago · 31 km deep · 7 km away
3. 2.56 km NW of Redcrest, CaliforniaTue, Apr 28, 11:33 AM PDT · 16592 days ago · -1 km deep · 53 km away
4. 1.745 km WNW of Shelter Cove, CaliforniaMon, Apr 27, 2:44 AM PDT · 16593 days ago · 5 km deep · 13 km away
5. 1.67 km S of Ferndale, CaliforniaMon, Apr 27, 12:18 AM PDT · 16594 days ago · 17 km deep · 37 km away
6. 1.8near the coast of Northern CaliforniaSun, Apr 26, 7:55 PM PDT · 16594 days ago · 8 km deep · 14 km away
7. 2.226 km WSW of Ferndale, CaliforniaSun, Apr 26, 7:52 PM PDT · 16594 days ago · 26 km deep · 18 km away
8. 1.610 km S of Scotia, CaliforniaSun, Apr 26, 1:39 AM PST · 16594 days ago · 36 km deep · 44 km away
9. 1.939 km WSW of Ferndale, CaliforniaSat, Apr 25, 4:57 PM PST · 16595 days ago · 15 km deep · 21 km away
10. 2.84 km NW of Redway, CaliforniaSat, Apr 25, 1:54 PM PST · 16595 days ago · 19 km deep · 68 km away
11. 2.220 km WSW of Weott, CaliforniaSat, Apr 25, 1:04 PM PST · 16595 days ago · 11 km deep · 43 km away
12. 1.9115 km W of Ferndale, CaliforniaFri, Apr 24, 4:58 PM PST · 16596 days ago · 4 km deep · 83 km away
13. 2.022 km WSW of Ferndale, CaliforniaFri, Apr 24, 11:10 AM PST · 16596 days ago · 24 km deep · 20 km away
14. 1.938 km SW of Ferndale, CaliforniaFri, Apr 24, 9:59 AM PST · 16596 days ago · 25 km deep · 3 km away
15. 2.428 km SW of Ferndale, CaliforniaThu, Apr 23, 8:22 AM PST · 16597 days ago · 18 km deep · 15 km away
16. 2.038 km SW of Ferndale, CaliforniaThu, Apr 23, 5:40 AM PST · 16597 days ago · 21 km deep · 4 km away
17. 2.144 km SW of Ferndale, CaliforniaThu, Apr 23, 12:50 AM PST · 16597 days ago · 18 km deep · 5 km away
18. 2.794 km W of Ferndale, CaliforniaWed, Apr 22, 11:22 PM PST · 16598 days ago · 4 km deep · 69 km away
19. 2.536 km SSW of Ferndale, CaliforniaWed, Apr 22, 4:47 PM PST · 16598 days ago · 25 km deep · 14 km away
20. 1.642 km SW of Ferndale, CaliforniaWed, Apr 22, 11:40 AM PST · 16598 days ago · 27 km deep · 2 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1063167. Read Thu, Oct 1, 2026, 7:30 PM UTC.