M1.8 earthquake 5 km SSW of Cobb, California

Magnitude

1.8 (md), micro

Local time

Sun, Dec 14, 1986, 9:47 AM PST

UTC

1986-12-14 17:47:22 UTC

Depth

0.7 km (0.4 mi), shallow

Epicenter

38.776° N, 122.743° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 7.3 km horizontally, 10.6 km in depth

Magnitude uncertainty

±0.13

Depth from

From location

Station coverage gap

169°

Stations used

7

• Cobb, CaliforniaPopulation 1,778. Forecast5 kmSSW
• Healdsburg, CaliforniaPopulation 11,742. Forecast21 kmNNE
• Santa Rosa, CaliforniaPopulation 178,127. Forecast37 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast662 kmNW

After

1. 1.96 km WNW of Cobb, CaliforniaMon, Dec 22, 9:58 AM PST · 14519 days ago · 0 km deep · 8 km away
2. 2.15 km ENE of Willits, CaliforniaMon, Dec 22, 4:03 PM PST · 14519 days ago · 2 km deep · 87 km away
3. 1.75 km ENE of Willits, CaliforniaMon, Dec 22, 4:05 PM PST · 14519 days ago · 2 km deep · 87 km away
4. 1.65 km SW of Cobb, CaliforniaMon, Dec 22, 7:26 PM PST · 14518 days ago · -1 km deep · 2 km away
5. 2.07 km E of Willits, CaliforniaMon, Dec 22, 11:20 PM PST · 14518 days ago · 7 km deep · 84 km away
6. 2.44 km WNW of Cobb, CaliforniaTue, Dec 23, 6:29 AM PST · 14518 days ago · 0 km deep · 8 km away
7. 2.49 km ESE of Hidden Valley Lake, CaliforniaTue, Dec 23, 12:45 PM PST · 14518 days ago · 8 km deep · 25 km away
8. 2.39 km WSW of Cobb, CaliforniaTue, Dec 23, 4:32 PM PST · 14518 days ago · 2 km deep · 7 km away
9. 1.78 km ESE of Hidden Valley Lake, CaliforniaTue, Dec 23, 8:30 PM PST · 14517 days ago · 4 km deep · 24 km away
10. 1.610 km ESE of Hidden Valley Lake, CaliforniaWed, Dec 24, 3:13 AM PST · 14517 days ago · 7 km deep · 26 km away
11. 1.74 km WSW of Cobb, CaliforniaWed, Dec 24, 6:59 PM PST · 14516 days ago · 1 km deep · 4 km away
12. 1.613 km E of Comptche, CaliforniaWed, Dec 24, 9:26 PM PST · 14516 days ago · 3 km deep · 81 km away
13. 1.79 km W of Cobb, CaliforniaWed, Dec 24, 10:00 PM PST · 14516 days ago · -1 km deep · 9 km away
14. 2.16 km WSW of Cobb, CaliforniaThu, Dec 25, 7:13 AM PST · 14516 days ago · 0 km deep · 6 km away
15. 1.76 km WSW of Cobb, CaliforniaThu, Dec 25, 11:19 AM PST · 14516 days ago · -1 km deep · 6 km away
16. 1.68 km E of Willits, CaliforniaThu, Dec 25, 11:35 AM PST · 14516 days ago · 9 km deep · 83 km away
17. 2.25 km WSW of Cobb, CaliforniaThu, Dec 25, 3:16 PM PST · 14516 days ago · 0 km deep · 4 km away
18. 3.06 km W of Cobb, CaliforniaFri, Dec 26, 2:29 AM PST · 14515 days ago · 2 km deep · 7 km away
19. 2.17 km W of Cobb, CaliforniaFri, Dec 26, 5:46 PM PST · 14514 days ago · 2 km deep · 8 km away
20. 1.821 km ENE of Potter Valley, CaliforniaSat, Dec 27, 6:10 PM PST · 14513 days ago · 0 km deep · 69 km away
21. 1.71 km NE of East Richmond Heights, CaliforniaSat, Dec 27, 8:21 PM PST · 14513 days ago · 8 km deep · 99 km away
22. 1.81 km NE of East Richmond Heights, CaliforniaSat, Dec 27, 8:49 PM PST · 14513 days ago · 8 km deep · 99 km away
23. 1.98 km E of Hidden Valley Lake, CaliforniaSun, Dec 28, 7:44 PM PST · 14512 days ago · 9 km deep · 25 km away
24. 1.79 km W of Cobb, CaliforniaSun, Dec 28, 10:45 PM PST · 14512 days ago · 0 km deep · 10 km away
25. 1.79 km W of Cobb, CaliforniaMon, Dec 29, 12:01 AM PST · 14512 days ago · 0 km deep · 10 km away
26. 1.94 km WNW of Cobb, CaliforniaMon, Dec 29, 1:31 AM PST · 14512 days ago · 2 km deep · 8 km away
27. 2.111 km W of Cobb, CaliforniaMon, Dec 29, 7:09 AM PST · 14512 days ago · 4 km deep · 10 km away
28. 1.84 km WSW of Cobb, CaliforniaMon, Dec 29, 10:24 PM PST · 14511 days ago · 0 km deep · 4 km away
29. 1.55 km WSW of Cobb, CaliforniaTue, Dec 30, 7:12 AM PST · 14511 days ago · 3 km deep · 4 km away
30. 2.27 km W of Cobb, CaliforniaTue, Dec 30, 2:58 PM PST · 14511 days ago · 4 km deep · 7 km away
31. 1.77 km W of Cobb, CaliforniaWed, Dec 31, 8:19 AM PST · 14510 days ago · 3 km deep · 8 km away
32. 1.85 km SW of Cobb, CaliforniaWed, Dec 31, 9:36 AM PST · 14510 days ago · -1 km deep · 3 km away
33. 2.27 km W of Cobb, CaliforniaWed, Dec 31, 10:33 AM PST · 14510 days ago · 1 km deep · 8 km away
34. 3.17 km W of Cobb, CaliforniaWed, Dec 31, 10:33 AM PST · 14510 days ago · 1 km deep · 8 km away
35. 2.87 km W of Cobb, CaliforniaWed, Dec 31, 10:34 AM PST · 14510 days ago · -1 km deep · 8 km away
36. 1.77 km W of Cobb, CaliforniaWed, Dec 31, 10:35 AM PST · 14510 days ago · 1 km deep · 8 km away
37. 1.77 km W of Cobb, CaliforniaWed, Dec 31, 10:36 AM PST · 14510 days ago · -1 km deep · 7 km away
38. 2.07 km W of Cobb, CaliforniaWed, Dec 31, 10:38 AM PST · 14510 days ago · 0 km deep · 8 km away
39. 1.88 km ESE of Hidden Valley Lake, CaliforniaWed, Dec 31, 5:35 PM PST · 14509 days ago · 7 km deep · 25 km away
40. 1.92 km E of Rohnert Park, CaliforniaWed, Dec 31, 7:46 PM PST · 14509 days ago · 3 km deep · 49 km away
41. 1.87 km W of Cobb, CaliforniaThu, Jan 1, 5:03 AM PST · 14509 days ago · 2 km deep · 7 km away
42. 2.42 km E of Rohnert Park, CaliforniaFri, Jan 2, 3:42 AM PST · 14508 days ago · 4 km deep · 49 km away
43. 1.82 km E of Rohnert Park, CaliforniaFri, Jan 2, 3:49 AM PST · 14508 days ago · 3 km deep · 49 km away
44. 2.12 km E of Rohnert Park, CaliforniaFri, Jan 2, 3:50 AM PST · 14508 days ago · 4 km deep · 49 km away
45. 1.72 km E of Rohnert Park, CaliforniaFri, Jan 2, 3:50 AM PST · 14508 days ago · 2 km deep · 49 km away
46. 2.22 km E of Rohnert Park, CaliforniaFri, Jan 2, 5:24 AM PST · 14508 days ago · 3 km deep · 49 km away
47. 1.63 km SSE of Roseland, CaliforniaFri, Jan 2, 6:07 AM PST · 14508 days ago · 3 km deep · 43 km away
48. 2.57 km W of Cobb, CaliforniaFri, Jan 2, 12:20 PM PST · 14508 days ago · 4 km deep · 7 km away
49. 2.17 km W of Cobb, CaliforniaFri, Jan 2, 3:34 PM PST · 14508 days ago · 4 km deep · 7 km away
50. 2.25 km SW of Yountville, CaliforniaSat, Jan 3, 1:29 AM PST · 14507 days ago · 6 km deep · 53 km away
51. 2.39 km SE of Knights Landing, CaliforniaSat, Jan 3, 5:54 AM PST · 14507 days ago · 16 km deep · 95 km away
52. 1.66 km W of Cobb, CaliforniaSat, Jan 3, 11:00 AM PST · 14507 days ago · 1 km deep · 7 km away
53. 1.96 km W of Cobb, CaliforniaSun, Jan 4, 3:50 AM PST · 14506 days ago · 3 km deep · 7 km away
54. 2.15 km SW of Cobb, CaliforniaSun, Jan 4, 5:03 AM PST · 14506 days ago · 0 km deep · 2 km away
55. 1.68 km W of Cobb, CaliforniaMon, Jan 5, 2:43 AM PST · 14505 days ago · 1 km deep · 9 km away
56. 2.45 km SW of Cobb, CaliforniaMon, Jan 5, 7:57 AM PST · 14505 days ago · 1 km deep · 3 km away
57. 1.717 km WSW of Elk Creek, CaliforniaMon, Jan 5, 5:14 PM PST · 14504 days ago · 3 km deep · 84 km away
58. 1.66 km W of Cobb, CaliforniaMon, Jan 5, 6:24 PM PST · 14504 days ago · 3 km deep · 7 km away
59. 1.74 km WNW of Cobb, CaliforniaTue, Jan 6, 6:24 AM PST · 14504 days ago · 2 km deep · 7 km away
60. 2.04 km WSW of North Lakeport, CaliforniaTue, Jan 6, 11:10 AM PST · 14504 days ago · 4 km deep · 38 km away

The first 60 of 175.

From the USGS Earthquake Hazards Program and its partner networks, event nc1145856. Read Tue, Sep 22, 2026, 12:17 PM UTC.