M2.6 earthquake 16 km ESE of Pine Hills, California

Magnitude

2.6 (md), micro

Local time

Sat, Oct 31, 1981, 9:58 AM PST

UTC

1981-10-31 17:58:19 UTC

Depth

24.3 km (15.1 mi), shallow

Epicenter

40.689° N, 123.969° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.4 km horizontally, 0.7 km in depth

Magnitude uncertainty

±0.08

Depth from

From location

Station coverage gap

68°

Stations used

19

• Pine Hills, CaliforniaPopulation 3,131. Forecast16 kmESE
• Fortuna, CaliforniaPopulation 12,000. Forecast19 kmENE
• Chico, CaliforniaPopulation 121,345. Forecast210 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast894 kmNNW

After

1. 1.836 km WSW of Ferndale, CaliforniaSun, Nov 1, 12:23 AM PST · 16396 days ago · 25 km deep · 65 km away
2. 1.711 km E of Pine Hills, CaliforniaSun, Nov 1, 6:52 AM PST · 16396 days ago · 25 km deep · 5 km away
3. 2.311 km W of Indianola, CaliforniaSun, Nov 1, 7:01 AM PST · 16396 days ago · 26 km deep · 34 km away
4. 1.79 km WSW of Rio Dell, CaliforniaSun, Nov 1, 9:50 AM PST · 16396 days ago · 23 km deep · 31 km away
5. 2.641 km SW of Ferndale, CASun, Nov 1, 11:00 AM PST · 16396 days ago · 26 km deep · 67 km away
6. 1.835 km SW of Ferndale, CaliforniaSun, Nov 1, 7:51 PM PST · 16395 days ago · 36 km deep · 62 km away
7. 3.257 km WSW of Ferndale, CaliforniaMon, Nov 2, 1:33 PM PST · 16395 days ago · 20 km deep · 85 km away
8. 2.137 km SW of Ferndale, CaliforniaTue, Nov 3, 9:43 AM PST · 16394 days ago · 26 km deep · 65 km away
9. 1.628 km SW of Ferndale, CaliforniaTue, Nov 3, 9:19 PM PST · 16393 days ago · 20 km deep · 55 km away
10. 2.138 km SW of Ferndale, CaliforniaWed, Nov 4, 3:37 AM PST · 16393 days ago · 27 km deep · 65 km away
11. 2.038 km SW of Ferndale, CaliforniaWed, Nov 4, 3:37 AM PST · 16393 days ago · 29 km deep · 66 km away
12. 1.536 km SW of Ferndale, CaliforniaWed, Nov 4, 9:10 AM PST · 16393 days ago · 21 km deep · 63 km away
13. 1.836 km SW of Ferndale, CaliforniaThu, Nov 5, 8:20 AM PST · 16392 days ago · 27 km deep · 63 km away
14. 3.422 km WNW of Trinidad, CaliforniaThu, Nov 5, 12:21 PM PST · 16392 days ago · 25 km deep · 59 km away
15. 2.137 km SW of Ferndale, CaliforniaFri, Nov 6, 1:51 AM PST · 16391 days ago · 22 km deep · 64 km away
16. 2.623 km WSW of Trinidad, CaliforniaFri, Nov 6, 11:35 AM PST · 16391 days ago · 13 km deep · 53 km away
17. 1.55 km E of Willow Creek, CaliforniaFri, Nov 6, 11:42 AM PST · 16391 days ago · 20 km deep · 43 km away
18. 1.829 km WSW of Ferndale, CaliforniaFri, Nov 6, 12:23 PM PST · 16391 days ago · 25 km deep · 57 km away
19. 1.731 km SW of Scotia, CaliforniaFri, Nov 6, 3:45 PM PST · 16390 days ago · 4 km deep · 57 km away
20. 2.231 km WSW of Ferndale, CaliforniaFri, Nov 6, 10:14 PM PST · 16390 days ago · 16 km deep · 59 km away
21. 1.616 km WSW of Scotia, CaliforniaSat, Nov 7, 7:24 PM PST · 16389 days ago · 30 km deep · 40 km away
22. 1.8near the coast of Northern CaliforniaSun, Nov 8, 2:13 AM PST · 16389 days ago · 30 km deep · 65 km away
23. 1.831 km SW of Ferndale, CaliforniaSun, Nov 8, 5:55 PM PST · 16388 days ago · 29 km deep · 60 km away
24. 1.86 km S of Blue Lake, CaliforniaMon, Nov 9, 11:53 AM PST · 16388 days ago · 4 km deep · 15 km away
25. 3.037 km SW of Ferndale, CaliforniaMon, Nov 9, 9:41 PM PST · 16387 days ago · 28 km deep · 64 km away
26. 3.336 km SW of Ferndale, CaliforniaTue, Nov 10, 12:58 AM PST · 16387 days ago · 29 km deep · 63 km away
27. 1.734 km SW of Ferndale, CaliforniaTue, Nov 10, 5:43 AM PST · 16387 days ago · 35 km deep · 60 km away
28. 2.238 km SW of Ferndale, CaliforniaTue, Nov 10, 11:35 AM PST · 16387 days ago · 27 km deep · 65 km away
29. 1.730 km SSW of Ferndale, CaliforniaTue, Nov 10, 12:25 PM PST · 16387 days ago · 32 km deep · 56 km away
30. 2.738 km SW of Ferndale, CATue, Nov 10, 4:07 PM PST · 16386 days ago · 27 km deep · 65 km away
31. 2.538 km SW of Ferndale, CaliforniaTue, Nov 10, 7:18 PM PST · 16386 days ago · 21 km deep · 66 km away
32. 1.529 km SSW of Ferndale, CaliforniaTue, Nov 10, 11:38 PM PST · 16386 days ago · 31 km deep · 55 km away
33. 2.9near the coast of Northern CaliforniaWed, Nov 11, 5:06 AM PST · 16386 days ago · 23 km deep · 69 km away
34. 2.639 km SW of Ferndale, CaliforniaWed, Nov 11, 5:23 AM PST · 16386 days ago · 35 km deep · 66 km away
35. 2.840 km SW of Ferndale, CaliforniaWed, Nov 11, 7:53 AM PST · 16386 days ago · 24 km deep · 68 km away
36. 4.036 km SW of Ferndale, CaliforniaWed, Nov 11, 9:46 AM PST · 16386 days ago · 27 km deep · 63 km away
37. 3.238 km SW of Ferndale, CaliforniaWed, Nov 11, 9:52 AM PST · 16386 days ago · 26 km deep · 65 km away
38. 1.524 km SW of Ferndale, CaliforniaThu, Nov 12, 4:31 PM PST · 16384 days ago · 17 km deep · 51 km away
39. 2.33 km WSW of McKinleyville, CaliforniaThu, Nov 12, 5:07 PM PST · 16384 days ago · 4 km deep · 30 km away
40. 1.741 km SSW of Ferndale, CaliforniaFri, Nov 13, 2:40 AM PST · 16384 days ago · 15 km deep · 66 km away
41. 2.834 km SSW of Ferndale, CaliforniaSat, Nov 14, 6:49 AM PST · 16383 days ago · 30 km deep · 61 km away
42. 2.919 km WSW of Ferndale, CaliforniaSat, Nov 14, 1:29 PM PST · 16383 days ago · 24 km deep · 47 km away
43. 2.1Northern CaliforniaSun, Nov 15, 12:03 AM PST · 16382 days ago · 23 km deep · 45 km away
44. 2.2near the coast of Northern CaliforniaSun, Nov 15, 10:34 AM PST · 16382 days ago · 18 km deep · 26 km away
45. 2.652 km W of Ferndale, CaliforniaSun, Nov 15, 5:18 PM PST · 16381 days ago · 14 km deep · 77 km away
46. 2.523 km WSW of Weott, CaliforniaWed, Nov 18, 12:04 AM PST · 16379 days ago · 9 km deep · 54 km away
47. 3.06 km W of Big Lagoon, CaliforniaWed, Nov 18, 1:34 AM PST · 16379 days ago · 14 km deep · 56 km away
48. 2.051 km SW of Ferndale, CaliforniaWed, Nov 18, 6:56 PM PST · 16378 days ago · 17 km deep · 79 km away
49. 1.720 km WSW of Weott, CaliforniaThu, Nov 19, 12:24 AM PST · 16378 days ago · 5 km deep · 52 km away
50. 1.623 km NNW of Shelter Cove, CaliforniaThu, Nov 19, 12:29 AM PST · 16378 days ago · 11 km deep · 55 km away
51. 1.710 km W of Indianola, CaliforniaThu, Nov 19, 11:58 AM PST · 16378 days ago · 19 km deep · 32 km away
52. 2.411 km ENE of Trinity Village, CaliforniaThu, Nov 19, 9:56 PM PST · 16377 days ago · 29 km deep · 54 km away
53. 2.438 km SW of Ferndale, CaliforniaThu, Nov 19, 10:04 PM PST · 16377 days ago · 24 km deep · 65 km away
54. 3.833 km W of Ferndale, CaliforniaFri, Nov 20, 3:59 PM PST · 16376 days ago · 25 km deep · 59 km away
55. 2.037 km SW of Ferndale, CaliforniaFri, Nov 20, 6:59 PM PST · 16376 days ago · 15 km deep · 65 km away
56. 1.716 km NE of Miranda, CaliforniaFri, Nov 20, 11:32 PM PST · 16376 days ago · 16 km deep · 43 km away
57. 3.231 km SW of Ferndale, CaliforniaTue, Nov 24, 10:37 AM PST · 16373 days ago · 28 km deep · 59 km away
58. 2.350 km SW of Ferndale, CaliforniaWed, Nov 25, 3:44 AM PST · 16372 days ago · 19 km deep · 78 km away
59. 1.941 km SW of Ferndale, CaliforniaWed, Nov 25, 4:34 AM PST · 16372 days ago · 22 km deep · 69 km away
60. 3.121 km SW of Ferndale, CaliforniaWed, Nov 25, 6:33 AM PST · 16372 days ago · 23 km deep · 49 km away

The first 60 of 112.

Before

1. 1.826 km SW of Ferndale, CaliforniaSat, Oct 31, 8:09 AM PST · 16397 days ago · 18 km deep · 54 km away
2. 1.718 km WSW of Ferndale, CaliforniaSat, Oct 31, 2:52 AM PST · 16397 days ago · 22 km deep · 47 km away
3. 3.036 km SW of Ferndale, CaliforniaFri, Oct 30, 9:05 PM PST · 16397 days ago · 28 km deep · 64 km away
4. 1.810 km NW of Willow Creek, CaliforniaFri, Oct 30, 6:04 PM PST · 16397 days ago · 24 km deep · 42 km away
5. 3.038 km SW of Ferndale, CaliforniaFri, Oct 30, 3:39 PM PST · 16397 days ago · 29 km deep · 66 km away
6. 1.517 km W of Ferndale, CaliforniaFri, Oct 30, 1:30 PM PST · 16398 days ago · 22 km deep · 44 km away
7. 2.647 km SW of Ferndale, CaliforniaFri, Oct 30, 10:01 AM PST · 16398 days ago · 21 km deep · 75 km away
8. 1.738 km SW of Ferndale, CaliforniaFri, Oct 30, 3:15 AM PST · 16398 days ago · 22 km deep · 65 km away
9. 2.63 km SE of Fortuna, CaliforniaFri, Oct 30, 2:27 AM PST · 16398 days ago · 20 km deep · 18 km away
10. 2.059 km W of Ferndale, CaliforniaThu, Oct 29, 4:23 PM PST · 16398 days ago · 10 km deep · 86 km away
11. 1.659 km SW of Ferndale, CaliforniaThu, Oct 29, 3:01 PM PST · 16398 days ago · 6 km deep · 88 km away
12. 1.638 km SW of Ferndale, CaliforniaThu, Oct 29, 8:26 AM PST · 16399 days ago · 25 km deep · 65 km away
13. 3.236 km SW of Ferndale, CaliforniaThu, Oct 29, 4:30 AM PST · 16399 days ago · 28 km deep · 63 km away
14. 2.635 km SW of Ferndale, CaliforniaThu, Oct 29, 4:14 AM PST · 16399 days ago · 25 km deep · 62 km away
15. 2.911 km W of Ferndale, CaliforniaThu, Oct 29, 4:11 AM PST · 16399 days ago · 22 km deep · 38 km away
16. 2.415 km W of Samoa, CaliforniaWed, Oct 28, 8:59 PM PST · 16399 days ago · 23 km deep · 36 km away
17. 1.643 km SW of Ferndale, CaliforniaWed, Oct 28, 10:16 AM PST · 16400 days ago · 18 km deep · 70 km away
18. 1.617 km WNW of Indianola, CaliforniaWed, Oct 28, 6:31 AM PST · 16400 days ago · 25 km deep · 39 km away
19. 1.739 km SW of Ferndale, CaliforniaWed, Oct 28, 5:39 AM PST · 16400 days ago · 23 km deep · 66 km away
20. 2.834 km SW of Ferndale, CaliforniaTue, Oct 27, 6:45 PM PST · 16400 days ago · 35 km deep · 61 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1069103. Read Tue, Sep 22, 2026, 9:30 AM UTC.