M1.7 earthquake 3 km NNE of Alderpoint, California

Magnitude

1.7 (md), micro

Local time

Tue, Apr 14, 1981, 1:19 PM PST

UTC

1981-04-14 21:19:29 UTC

Depth

33.4 km (20.8 mi), shallow

Epicenter

40.212° N, 123.602° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.7 km horizontally, 2.1 km in depth

Magnitude uncertainty

±0.23

Depth from

From location

Station coverage gap

127°

Stations used

6

• Miranda, CaliforniaPopulation 520. Forecast19 kmE
• Fortuna, CaliforniaPopulation 12,000. Forecast64 kmSE
• Chico, CaliforniaPopulation 121,345. Forecast160 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast833 kmNNW

After

1. 1.527 km SSW of Ferndale, CaliforniaTue, Apr 14, 2:01 PM PST · 16597 days ago · 16 km deep · 73 km away
2. 2.038 km SW of Ferndale, CaliforniaTue, Apr 14, 4:26 PM PST · 16597 days ago · 21 km deep · 83 km away
3. 1.837 km SW of Ferndale, CaliforniaTue, Apr 14, 5:34 PM PST · 16597 days ago · 21 km deep · 84 km away
4. 1.511 km W of Mad River, CaliforniaTue, Apr 14, 5:34 PM PST · 16597 days ago · 0 km deep · 26 km away
5. 2.120 km ENE of Brooktrails, CaliforniaTue, Apr 14, 6:47 PM PST · 16597 days ago · 8 km deep · 84 km away
6. 1.821 km NNE of Potter Valley, CaliforniaWed, Apr 15, 6:23 AM PST · 16596 days ago · 8 km deep · 95 km away
7. 2.341 km SW of Ferndale, CaliforniaWed, Apr 15, 7:31 AM PST · 16596 days ago · 24 km deep · 88 km away
8. 2.66 km NW of Laytonville, CaliforniaWed, Apr 15, 8:32 AM PST · 16596 days ago · 7 km deep · 54 km away
9. 2.821 km NNE of Potter Valley, CaliforniaWed, Apr 15, 9:07 AM PST · 16596 days ago · 8 km deep · 96 km away
10. 1.937 km SW of Ferndale, CaliforniaWed, Apr 15, 10:04 AM PST · 16596 days ago · 25 km deep · 81 km away
11. 2.836 km SW of Ferndale, CaliforniaThu, Apr 16, 5:40 PM PST · 16595 days ago · 26 km deep · 80 km away
12. 1.534 km SW of Scotia, CaliforniaFri, Apr 17, 1:32 PM PST · 16594 days ago · 12 km deep · 67 km away
13. 2.028 km NNE of Potter Valley, CaliforniaFri, Apr 17, 3:37 PM PST · 16594 days ago · 14 km deep · 91 km away
14. 2.938 km SW of Ferndale, CaliforniaFri, Apr 17, 5:26 PM PST · 16594 days ago · 20 km deep · 85 km away
15. 2.639 km SW of Ferndale, CaliforniaFri, Apr 17, 8:24 PM PST · 16594 days ago · 23 km deep · 85 km away
16. 1.647 km SW of Ferndale, CaliforniaSat, Apr 18, 7:52 AM PST · 16593 days ago · 13 km deep · 92 km away
17. 1.939 km SW of Ferndale, CaliforniaSat, Apr 18, 10:37 AM PST · 16593 days ago · 20 km deep · 84 km away
18. 2.24 km SSW of Westhaven-Moonstone, CaliforniaSat, Apr 18, 12:18 PM PST · 16593 days ago · 15 km deep · 99 km away
19. 2.13 km SW of Loleta, CaliforniaSun, Apr 19, 3:56 AM PST · 16592 days ago · 21 km deep · 71 km away
20. 1.540 km SW of Ferndale, CaliforniaSun, Apr 19, 8:50 AM PST · 16592 days ago · 23 km deep · 84 km away
21. 1.811 km WSW of Mad River, CaliforniaSun, Apr 19, 4:04 PM PST · 16592 days ago · -1 km deep · 21 km away
22. 1.634 km SW of Ferndale, CaliforniaSun, Apr 19, 8:53 PM PST · 16592 days ago · 21 km deep · 79 km away
23. 2.99 km WNW of McKinleyville, CaliforniaSun, Apr 19, 10:22 PM PST · 16592 days ago · 46 km deep · 99 km away
24. 3.2near the coast of Northern CaliforniaSun, Apr 19, 11:23 PM PST · 16592 days ago · 25 km deep · 88 km away
25. 1.622 km SE of Indianola, CaliforniaMon, Apr 20, 12:53 AM PST · 16592 days ago · 22 km deep · 58 km away
26. 2.33 km E of Laytonville, CaliforniaMon, Apr 20, 6:36 AM PST · 16591 days ago · 5 km deep · 59 km away
27. 2.437 km SW of Ferndale, CaliforniaMon, Apr 20, 8:52 AM PST · 16591 days ago · 29 km deep · 83 km away
28. 2.422 km SE of Indianola, CaliforniaMon, Apr 20, 3:02 PM PST · 16591 days ago · 21 km deep · 58 km away
29. 3.540 km SW of Ferndale, CaliforniaMon, Apr 20, 3:44 PM PST · 16591 days ago · 27 km deep · 87 km away
30. 2.340 km SW of Ferndale, CaliforniaMon, Apr 20, 5:00 PM PST · 16591 days ago · 27 km deep · 87 km away
31. 1.717 km NE of Redcrest, CaliforniaMon, Apr 20, 6:13 PM PST · 16591 days ago · 26 km deep · 40 km away
32. 1.830 km SW of Scotia, CaliforniaMon, Apr 20, 6:26 PM PST · 16591 days ago · 13 km deep · 64 km away
33. 2.220 km SSW of Scotia, CaliforniaTue, Apr 21, 2:54 AM PST · 16591 days ago · 4 km deep · 51 km away
34. 2.24 km SW of Loleta, CaliforniaTue, Apr 21, 10:38 AM PST · 16590 days ago · 19 km deep · 72 km away
35. 1.844 km SW of Ferndale, CaliforniaWed, Apr 22, 1:08 AM PST · 16590 days ago · 28 km deep · 88 km away
36. 2.344 km SW of Ferndale, CaliforniaWed, Apr 22, 1:21 AM PST · 16590 days ago · 18 km deep · 91 km away
37. 1.69 km WNW of Mad River, CaliforniaWed, Apr 22, 4:31 AM PST · 16589 days ago · 5 km deep · 29 km away
38. 3.138 km SW of Ferndale, CaliforniaWed, Apr 22, 8:37 AM PST · 16589 days ago · 27 km deep · 86 km away
39. 1.642 km SW of Ferndale, CaliforniaWed, Apr 22, 11:40 AM PST · 16589 days ago · 27 km deep · 89 km away
40. 2.536 km SSW of Ferndale, CaliforniaWed, Apr 22, 4:47 PM PST · 16589 days ago · 25 km deep · 73 km away
41. 2.144 km SW of Ferndale, CaliforniaThu, Apr 23, 12:50 AM PST · 16589 days ago · 18 km deep · 92 km away
42. 2.038 km SW of Ferndale, CaliforniaThu, Apr 23, 5:40 AM PST · 16588 days ago · 21 km deep · 85 km away
43. 2.428 km SW of Ferndale, CaliforniaThu, Apr 23, 8:22 AM PST · 16588 days ago · 18 km deep · 75 km away
44. 1.938 km SW of Ferndale, CaliforniaFri, Apr 24, 9:59 AM PST · 16587 days ago · 25 km deep · 86 km away
45. 2.022 km WSW of Ferndale, CaliforniaFri, Apr 24, 11:10 AM PST · 16587 days ago · 24 km deep · 80 km away
46. 1.77 km NE of Mad River, CaliforniaFri, Apr 24, 7:36 PM PST · 16587 days ago · 30 km deep · 35 km away
47. 2.220 km WSW of Weott, CaliforniaSat, Apr 25, 1:04 PM PST · 16586 days ago · 11 km deep · 45 km away
48. 2.84 km NW of Redway, CaliforniaSat, Apr 25, 1:54 PM PST · 16586 days ago · 19 km deep · 23 km away
49. 1.939 km WSW of Ferndale, CaliforniaSat, Apr 25, 4:57 PM PST · 16586 days ago · 15 km deep · 99 km away
50. 1.610 km S of Scotia, CaliforniaSun, Apr 26, 1:39 AM PST · 16586 days ago · 36 km deep · 48 km away
51. 2.226 km WSW of Ferndale, CaliforniaSun, Apr 26, 7:52 PM PDT · 16585 days ago · 26 km deep · 83 km away
52. 1.67 km S of Ferndale, CaliforniaMon, Apr 27, 12:18 AM PDT · 16585 days ago · 17 km deep · 66 km away
53. 1.745 km WNW of Shelter Cove, CaliforniaMon, Apr 27, 2:44 AM PDT · 16585 days ago · 5 km deep · 80 km away
54. 2.56 km NW of Redcrest, CaliforniaTue, Apr 28, 11:33 AM PDT · 16583 days ago · -1 km deep · 43 km away
55. 1.95 km WNW of Laytonville, CaliforniaTue, Apr 28, 11:14 PM PDT · 16583 days ago · 2 km deep · 56 km away
56. 1.737 km SW of Ferndale, CaliforniaTue, Apr 28, 11:20 PM PDT · 16583 days ago · 31 km deep · 80 km away
57. 1.642 km SW of Ferndale, CaliforniaWed, Apr 29, 11:16 PM PDT · 16582 days ago · 25 km deep · 87 km away
58. 1.910 km ESE of Willits, CaliforniaFri, May 1, 4:48 AM PDT · 16580 days ago · 6 km deep · 98 km away
59. 1.811 km SW of Ferndale, CaliforniaFri, May 1, 11:07 AM PDT · 16580 days ago · 25 km deep · 74 km away
60. 1.5near the coast of Northern CaliforniaFri, May 1, 10:08 PM PDT · 16580 days ago · 7 km deep · 93 km away

The first 60 of 168.

Before

1. 2.236 km SW of Ferndale, CaliforniaTue, Apr 14, 1:00 AM PST · 16598 days ago · 27 km deep · 80 km away
2. 2.031 km WSW of Paskenta, CaliforniaTue, Apr 14, 12:49 AM PST · 16598 days ago · 4 km deep · 82 km away
3. 1.89 km NE of Brooktrails, CaliforniaMon, Apr 13, 9:31 PM PST · 16598 days ago · 8 km deep · 84 km away
4. 3.137 km SW of Ferndale, CaliforniaMon, Apr 13, 8:41 PM PST · 16598 days ago · 27 km deep · 82 km away
5. 2.1near the coast of Northern CaliforniaMon, Apr 13, 8:06 PM PST · 16598 days ago · 5 km deep · 48 km away
6. 1.9near the coast of Northern CaliforniaMon, Apr 13, 4:35 PM PST · 16598 days ago · 10 km deep · 85 km away
7. 1.7near the coast of Northern CaliforniaMon, Apr 13, 3:51 PM PST · 16598 days ago · 24 km deep · 81 km away
8. 4.336 km SW of Ferndale, CaliforniaMon, Apr 13, 2:16 PM PST · 16598 days ago · 23 km deep · 81 km away
9. 2.140 km SW of Ferndale, CaliforniaMon, Apr 13, 9:44 AM PST · 16598 days ago · 24 km deep · 85 km away
10. 1.738 km SW of Ferndale, CaliforniaMon, Apr 13, 6:45 AM PST · 16598 days ago · 24 km deep · 83 km away
11. 1.821 km WSW of Burnt Ranch, CaliforniaSun, Apr 12, 7:34 AM PST · 16599 days ago · 23 km deep · 58 km away
12. 1.74 km NNE of Redway, CaliforniaSun, Apr 12, 7:12 AM PST · 16599 days ago · 4 km deep · 18 km away
13. 1.738 km SW of Ferndale, CaliforniaSun, Apr 12, 2:43 AM PST · 16600 days ago · 16 km deep · 81 km away
14. 1.626 km NW of Shelter Cove, CaliforniaSun, Apr 12, 12:36 AM PST · 16600 days ago · 4 km deep · 56 km away
15. 1.951 km SW of Ferndale, CaliforniaSat, Apr 11, 10:24 PM PST · 16600 days ago · 15 km deep · 97 km away
16. 1.712 km NE of Myers Flat, CaliforniaSat, Apr 11, 1:02 AM PST · 16601 days ago · 0 km deep · 22 km away
17. 2.446 km SW of Ferndale, CaliforniaSat, Apr 11, 12:56 AM PST · 16601 days ago · 16 km deep · 94 km away
18. 1.810 km W of Indianola, CaliforniaFri, Apr 10, 11:59 PM PST · 16601 days ago · 8 km deep · 82 km away
19. 2.424 km SW of Scotia, CaliforniaFri, Apr 10, 8:58 PM PST · 16601 days ago · 30 km deep · 62 km away
20. 2.434 km SW of Ferndale, CaliforniaThu, Apr 9, 10:22 PM PST · 16602 days ago · 37 km deep · 80 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1062546. Read Tue, Sep 22, 2026, 10:24 PM UTC.