M1.5 earthquake 13 km N of Brooktrails, California

Magnitude

1.5 (md), micro

Local time

Wed, Nov 13, 1985, 4:27 AM PST

UTC

1985-11-13 12:27:57 UTC

Depth

8.9 km (5.5 mi), shallow

Epicenter

39.566° N, 123.388° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.3 km horizontally, 1.0 km in depth

Magnitude uncertainty

±0.26

Depth from

From location

Station coverage gap

107°

Stations used

9

• Brooktrails, CaliforniaPopulation 3,235. Forecast14 kmN
• Ukiah, CaliforniaPopulation 15,917. Forecast49 kmNNW
• Chico, CaliforniaPopulation 121,345. Forecast134 kmW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast765 kmNW

After

1. 1.78 km N of Laytonville, CaliforniaWed, Nov 13, 6:29 AM PST · 14928 days ago · 3 km deep · 23 km away
2. 1.89 km E of Hopland, CaliforniaWed, Nov 13, 6:41 AM PST · 14928 days ago · 2 km deep · 74 km away
3. 1.66 km W of Cobb, CaliforniaWed, Nov 13, 9:09 PM PST · 14928 days ago · 2 km deep · 98 km away
4. 2.17 km W of Cobb, CaliforniaThu, Nov 14, 7:44 AM PST · 14927 days ago · 1 km deep · 96 km away
5. 1.97 km W of Cobb, CaliforniaThu, Nov 14, 7:44 AM PST · 14927 days ago · 1 km deep · 96 km away
6. 1.66 km ENE of Brooktrails, CaliforniaFri, Nov 15, 5:43 AM PST · 14926 days ago · 7 km deep · 12 km away
7. 1.66 km W of Cobb, CaliforniaSat, Nov 16, 8:30 PM PST · 14925 days ago · 2 km deep · 98 km away
8. 1.514 km SSE of Laytonville, CaliforniaSun, Nov 17, 4:03 AM PST · 14925 days ago · 10 km deep · 2 km away
9. 1.98 km W of Cobb, CaliforniaSun, Nov 17, 4:30 AM PST · 14925 days ago · 1 km deep · 96 km away
10. 1.84 km W of Cobb, CaliforniaSun, Nov 17, 7:27 AM PST · 14924 days ago · 0 km deep · 98 km away
11. 2.68 km W of Cobb, CaliforniaSun, Nov 17, 10:43 AM PST · 14924 days ago · 1 km deep · 97 km away
12. 1.98 km W of Lodoga, CaliforniaSun, Nov 17, 6:48 PM PST · 14924 days ago · 4 km deep · 76 km away
13. 2.36 km W of Cobb, CaliforniaTue, Nov 19, 5:41 AM PST · 14922 days ago · 3 km deep · 97 km away
14. 1.76 km W of Cobb, CaliforniaTue, Nov 19, 7:03 AM PST · 14922 days ago · 3 km deep · 97 km away
15. 1.726 km WNW of Paskenta, CaliforniaTue, Nov 19, 11:46 AM PST · 14922 days ago · -1 km deep · 63 km away
16. 1.79 km WSW of Cobb, CaliforniaWed, Nov 20, 5:14 AM PST · 14922 days ago · 2 km deep · 98 km away
17. 1.65 km WSW of Cobb, CaliforniaWed, Nov 20, 6:43 PM PST · 14921 days ago · 2 km deep · 99 km away
18. 1.85 km WSW of Cobb, CaliforniaWed, Nov 20, 6:43 PM PST · 14921 days ago · 1 km deep · 99 km away
19. 1.86 km W of Cobb, CaliforniaWed, Nov 20, 9:58 PM PST · 14921 days ago · 1 km deep · 98 km away
20. 2.13 km ESE of Cloverdale, CaliforniaWed, Nov 20, 11:42 PM PST · 14921 days ago · 2 km deep · 93 km away
21. 2.29 km WSW of Cobb, CaliforniaFri, Nov 22, 7:08 AM PST · 14919 days ago · 1 km deep · 98 km away
22. 1.57 km WSW of Cobb, CaliforniaFri, Nov 22, 2:45 PM PST · 14919 days ago · 2 km deep · 98 km away
23. 1.59 km SSE of Willits, CaliforniaFri, Nov 22, 3:21 PM PST · 14919 days ago · 7 km deep · 27 km away
24. 1.77 km WSW of Cobb, CaliforniaFri, Nov 22, 8:26 PM PST · 14919 days ago · 1 km deep · 98 km away
25. 2.27 km W of Cobb, CaliforniaFri, Nov 22, 9:41 PM PST · 14919 days ago · 0 km deep · 97 km away
26. 3.78 km NNW of Alderpoint, CaliforniaFri, Nov 22, 11:27 PM PST · 14919 days ago · 28 km deep · 79 km away
27. 1.613 km SW of Mad River, CaliforniaFri, Nov 22, 11:44 PM PST · 14919 days ago · 4 km deep · 93 km away
28. 1.710 km NE of Phillipsville, CaliforniaFri, Nov 22, 11:47 PM PST · 14919 days ago · 24 km deep · 83 km away
29. 2.210 km NE of Phillipsville, CaliforniaSat, Nov 23, 12:47 AM PST · 14919 days ago · 29 km deep · 83 km away
30. 1.78 km WSW of Cobb, CaliforniaSat, Nov 23, 10:36 AM PST · 14918 days ago · 3 km deep · 99 km away
31. 2.49 km NNW of Alderpoint, CaliforniaSat, Nov 23, 9:30 PM PST · 14918 days ago · 26 km deep · 80 km away
32. 1.810 km NE of Phillipsville, CaliforniaSat, Nov 23, 11:17 PM PST · 14918 days ago · 26 km deep · 82 km away
33. 2.15 km WSW of Cobb, CaliforniaSun, Nov 24, 1:20 PM PST · 14917 days ago · 1 km deep · 100 km away
34. 1.817 km NE of Myers Flat, CaliforniaSun, Nov 24, 6:25 PM PST · 14917 days ago · 22 km deep · 95 km away
35. 2.118 km ENE of Weott, CaliforniaSun, Nov 24, 6:26 PM PST · 14917 days ago · 19 km deep · 96 km away
36. 1.87 km W of Cobb, CaliforniaSun, Nov 24, 9:13 PM PST · 14917 days ago · 1 km deep · 96 km away
37. 2.026 km NE of Potter Valley, CaliforniaSun, Nov 24, 10:08 PM PST · 14917 days ago · 7 km deep · 45 km away
38. 1.98 km W of Cobb, CaliforniaMon, Nov 25, 6:26 PM PST · 14916 days ago · 0 km deep · 96 km away
39. 1.712 km WSW of Willits, CaliforniaTue, Nov 26, 10:18 AM PST · 14915 days ago · 0 km deep · 25 km away
40. 1.75 km W of Cobb, CaliforniaTue, Nov 26, 12:24 PM PST · 14915 days ago · 1 km deep · 97 km away
41. 1.96 km E of Calpella, CaliforniaTue, Nov 26, 2:53 PM PST · 14915 days ago · 3 km deep · 43 km away
42. 2.03 km ESE of Clear Lake Riviera, CaliforniaTue, Nov 26, 8:43 PM PST · 14915 days ago · 4 km deep · 92 km away
43. 1.67 km WSW of Cobb, CaliforniaTue, Nov 26, 9:23 PM PST · 14915 days ago · 0 km deep · 99 km away
44. 1.57 km WSW of Cobb, CaliforniaTue, Nov 26, 9:23 PM PST · 14915 days ago · -1 km deep · 98 km away
45. 2.07 km WSW of Cobb, CaliforniaTue, Nov 26, 9:27 PM PST · 14915 days ago · 0 km deep · 99 km away
46. 1.96 km W of Cobb, CaliforniaTue, Nov 26, 10:19 PM PST · 14915 days ago · 3 km deep · 97 km away
47. 2.334 km NW of Paskenta, CaliforniaWed, Nov 27, 1:35 AM PST · 14915 days ago · 8 km deep · 74 km away
48. 2.68 km WSW of Cobb, CaliforniaWed, Nov 27, 3:46 AM PST · 14915 days ago · 1 km deep · 98 km away
49. 1.612 km NE of Clearlake, CaliforniaWed, Nov 27, 4:37 AM PST · 14915 days ago · 6 km deep · 97 km away
50. 1.55 km W of Cobb, CaliforniaWed, Nov 27, 8:18 AM PST · 14914 days ago · 0 km deep · 98 km away
51. 1.87 km WSW of Cobb, CaliforniaWed, Nov 27, 5:36 PM PST · 14914 days ago · 0 km deep · 100 km away
52. 1.97 km W of Cobb, CaliforniaThu, Nov 28, 4:31 AM PST · 14914 days ago · 0 km deep · 96 km away
53. 1.77 km W of Cobb, CaliforniaThu, Nov 28, 10:45 AM PST · 14913 days ago · 4 km deep · 97 km away
54. 1.99 km WSW of Cobb, CaliforniaThu, Nov 28, 10:20 PM PST · 14913 days ago · 2 km deep · 98 km away
55. 1.58 km W of Cobb, CaliforniaFri, Nov 29, 3:14 AM PST · 14913 days ago · 1 km deep · 97 km away
56. 1.65 km WSW of Cobb, CaliforniaFri, Nov 29, 7:22 AM PST · 14912 days ago · 1 km deep · 99 km away
57. 2.45 km WSW of Cobb, CaliforniaFri, Nov 29, 11:51 AM PST · 14912 days ago · 1 km deep · 100 km away
58. 1.930 km WNW of Paskenta, CaliforniaFri, Nov 29, 9:13 PM PST · 14912 days ago · 1 km deep · 63 km away
59. 1.96 km WNW of Cobb, CaliforniaSat, Nov 30, 11:08 AM PST · 14911 days ago · 1 km deep · 96 km away
60. 2.18 km WSW of Cobb, CaliforniaSat, Nov 30, 3:31 PM PST · 14911 days ago · 3 km deep · 99 km away

The first 60 of 186.

Before

1. 1.630 km ENE of Covelo, CaliforniaWed, Nov 13, 3:41 AM PST · 14929 days ago · 16 km deep · 56 km away
2. 2.03 km WNW of Cobb, CaliforniaTue, Nov 12, 11:00 PM PST · 14929 days ago · 0 km deep · 98 km away
3. 1.86 km WSW of Cobb, CaliforniaTue, Nov 12, 9:25 PM PST · 14929 days ago · 3 km deep · 99 km away
4. 1.63 km WNW of Cobb, CaliforniaTue, Nov 12, 5:31 PM PST · 14929 days ago · 0 km deep · 98 km away
5. 4.15 km NW of Cobb, CaliforniaTue, Nov 12, 8:06 AM PST · 14929 days ago · -1 km deep · 96 km away
6. 2.613 km N of Brooktrails, CaliforniaMon, Nov 11, 8:57 PM PST · 14930 days ago · 9 km deep · 0 km away
7. 2.88 km E of Leggett, CaliforniaMon, Nov 11, 8:15 PM PST · 14930 days ago · 0 km deep · 37 km away
8. 1.77 km NE of Phillipsville, CaliforniaMon, Nov 11, 4:24 PM PST · 14930 days ago · 8 km deep · 83 km away
9. 1.828 km W of Paskenta, CaliforniaMon, Nov 11, 5:25 AM PST · 14931 days ago · 15 km deep · 59 km away
10. 1.69 km W of Cobb, CaliforniaSun, Nov 10, 11:45 AM PST · 14931 days ago · 0 km deep · 97 km away
11. 1.85 km WNW of Cobb, CaliforniaSun, Nov 10, 5:37 AM PST · 14931 days ago · 2 km deep · 96 km away
12. 1.823 km SE of Covelo, CaliforniaSat, Nov 9, 7:34 AM PST · 14932 days ago · 5 km deep · 27 km away
13. 1.77 km W of Cobb, CaliforniaFri, Nov 8, 8:30 PM PST · 14933 days ago · 3 km deep · 97 km away
14. 1.75 km W of Cobb, CaliforniaFri, Nov 8, 3:00 PM PST · 14933 days ago · 1 km deep · 98 km away
15. 1.85 km WSW of Cobb, CaliforniaFri, Nov 8, 8:15 AM PST · 14933 days ago · 1 km deep · 100 km away
16. 2.48 km W of Cobb, CaliforniaFri, Nov 8, 5:19 AM PST · 14934 days ago · 0 km deep · 97 km away
17. 1.99 km W of Cobb, CaliforniaFri, Nov 8, 5:17 AM PST · 14934 days ago · 0 km deep · 96 km away
18. 2.09 km W of Cobb, CaliforniaFri, Nov 8, 5:16 AM PST · 14934 days ago · 0 km deep · 96 km away
19. 2.29 km W of Cobb, CaliforniaFri, Nov 8, 5:16 AM PST · 14934 days ago · 1 km deep · 96 km away
20. 3.09 km W of Cobb, CaliforniaFri, Nov 8, 5:12 AM PST · 14934 days ago · -1 km deep · 95 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc60520. Read Mon, Sep 28, 2026, 1:05 AM UTC.