M1.7 earthquake 4 km WSW of Cobb, California

Magnitude

1.7 (md), micro

Local time

Tue, Mar 25, 1986, 9:32 PM PST

UTC

1986-03-26 05:32:01 UTC

Depth

1.2 km (0.7 mi), shallow

Epicenter

38.811° N, 122.774° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.5 km in depth

Magnitude uncertainty

±0.13

Depth from

From location

Station coverage gap

72°

Stations used

12

• Cobb, CaliforniaPopulation 1,778. Forecast5 kmWSW
• Clearlake, CaliforniaPopulation 15,182. Forecast21 kmSW
• Santa Rosa, CaliforniaPopulation 178,127. Forecast41 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast666 kmNW

After

1. 2.413 km E of Hidden Valley Lake, CaliforniaWed, Mar 26, 12:19 PM PST · 14798 days ago · 0 km deep · 32 km away
2. 1.95 km SW of Cobb, CaliforniaThu, Mar 27, 8:45 PM PST · 14796 days ago · -1 km deep · 3 km away
3. 2.66 km W of Cobb, CaliforniaThu, Mar 27, 11:42 PM PST · 14796 days ago · 3 km deep · 2 km away
4. 2.5Northern CaliforniaFri, Mar 28, 2:43 AM PST · 14796 days ago · 1 km deep · 3 km away
5. 2.45 km SW of Cobb, CaliforniaFri, Mar 28, 8:27 PM PST · 14795 days ago · 1 km deep · 3 km away
6. 1.65 km WSW of Cobb, CaliforniaFri, Mar 28, 9:33 PM PST · 14795 days ago · 0 km deep · 2 km away
7. 2.34 km WSW of Cobb, CaliforniaFri, Mar 28, 10:21 PM PST · 14795 days ago · 1 km deep · 0 km away
8. 2.59 km ESE of Hidden Valley Lake, CaliforniaFri, Mar 28, 11:20 PM PST · 14795 days ago · 7 km deep · 28 km away
9. 1.76 km W of Cobb, CaliforniaSat, Mar 29, 1:35 AM PST · 14795 days ago · 3 km deep · 3 km away
10. 2.14 km WSW of Cobb, CaliforniaSat, Mar 29, 10:47 PM PST · 14794 days ago · 1 km deep · 1 km away
11. 2.08 km WSW of Cobb, CaliforniaSun, Mar 30, 6:43 AM PST · 14794 days ago · 4 km deep · 4 km away
12. 1.512 km NE of Comptche, CaliforniaSun, Mar 30, 1:00 PM PST · 14794 days ago · 5 km deep · 85 km away
13. 1.57 km W of Cobb, CaliforniaMon, Mar 31, 5:42 AM PST · 14793 days ago · 3 km deep · 3 km away
14. 2.07 km W of Cobb, CaliforniaMon, Mar 31, 5:54 AM PST · 14793 days ago · 3 km deep · 3 km away
15. 1.66 km W of Cobb, CaliforniaMon, Mar 31, 6:09 AM PST · 14793 days ago · 1 km deep · 3 km away
16. 1.52 km E of Clear Lake Riviera, CaliforniaMon, Mar 31, 8:18 AM PST · 14793 days ago · 3 km deep · 18 km away
17. 2.116 km N of Upper Lake, CaliforniaMon, Mar 31, 11:29 AM PST · 14793 days ago · 7 km deep · 57 km away
18. 2.37 km WSW of Cobb, CaliforniaMon, Mar 31, 7:50 PM PST · 14792 days ago · 0 km deep · 2 km away
19. 1.65 km SW of Cobb, CaliforniaMon, Mar 31, 9:39 PM PST · 14792 days ago · 1 km deep · 2 km away
20. 1.55 km WSW of Cobb, CaliforniaTue, Apr 1, 4:42 AM PST · 14792 days ago · 1 km deep · 1 km away
21. 3.08 km W of Cobb, CaliforniaTue, Apr 1, 5:47 PM PST · 14791 days ago · 1 km deep · 4 km away
22. 1.75 km SW of Cobb, CaliforniaTue, Apr 1, 6:22 PM PST · 14791 days ago · 0 km deep · 3 km away
23. 1.69 km W of Cobb, CaliforniaTue, Apr 1, 10:11 PM PST · 14791 days ago · 0 km deep · 5 km away
24. 1.88 km WSW of Cobb, CaliforniaWed, Apr 2, 12:06 AM PST · 14791 days ago · 0 km deep · 4 km away
25. 1.811 km W of Cobb, CaliforniaWed, Apr 2, 8:18 AM PST · 14791 days ago · -1 km deep · 7 km away
26. 2.56 km W of Cobb, CaliforniaWed, Apr 2, 10:02 AM PST · 14791 days ago · 3 km deep · 3 km away
27. 1.55 km SW of Cobb, CaliforniaWed, Apr 2, 10:39 AM PST · 14791 days ago · 1 km deep · 2 km away
28. 2.77 km W of Cobb, CaliforniaWed, Apr 2, 9:43 PM PST · 14790 days ago · 4 km deep · 3 km away
29. 1.86 km W of Cobb, CaliforniaThu, Apr 3, 5:04 AM PST · 14790 days ago · 3 km deep · 2 km away
30. 2.16 km W of Cobb, CaliforniaThu, Apr 3, 9:11 AM PST · 14790 days ago · 3 km deep · 3 km away
31. 2.19 km SE of Willits, CaliforniaThu, Apr 3, 5:19 PM PST · 14789 days ago · 5 km deep · 74 km away
32. 1.76 km W of Cobb, CaliforniaThu, Apr 3, 10:54 PM PST · 14789 days ago · 2 km deep · 2 km away
33. 1.76 km SW of Cobb, CaliforniaFri, Apr 4, 8:33 AM PST · 14789 days ago · 0 km deep · 4 km away
34. 1.77 km W of Cobb, CaliforniaFri, Apr 4, 10:30 AM PST · 14789 days ago · 3 km deep · 3 km away
35. 2.04 km WSW of Cobb, CaliforniaFri, Apr 4, 8:10 PM PST · 14788 days ago · 1 km deep · 1 km away
36. 2.17 km WSW of Cobb, CaliforniaFri, Apr 4, 8:14 PM PST · 14788 days ago · 1 km deep · 3 km away
37. 1.76 km WSW of Cobb, CaliforniaFri, Apr 4, 10:31 PM PST · 14788 days ago · 1 km deep · 2 km away
38. 2.57 km WSW of Cobb, CaliforniaFri, Apr 4, 10:43 PM PST · 14788 days ago · 0 km deep · 3 km away
39. 1.76 km W of Cobb, CaliforniaSat, Apr 5, 12:35 PM PST · 14788 days ago · 2 km deep · 2 km away
40. 1.77 km WSW of Cobb, CaliforniaSat, Apr 5, 9:42 PM PST · 14787 days ago · 0 km deep · 3 km away
41. 1.77 km WSW of Cobb, CaliforniaSun, Apr 6, 6:00 AM PST · 14787 days ago · 4 km deep · 3 km away
42. 1.97 km WSW of Cobb, CaliforniaSun, Apr 6, 7:19 PM PST · 14786 days ago · 1 km deep · 2 km away
43. 1.75 km S of Cobb, CaliforniaMon, Apr 7, 6:33 AM PST · 14786 days ago · 2 km deep · 6 km away
44. 1.56 km W of Cobb, CaliforniaWed, Apr 9, 10:06 PM PST · 14783 days ago · 2 km deep · 2 km away
45. 2.06 km W of Cobb, CaliforniaThu, Apr 10, 5:28 AM PST · 14783 days ago · 2 km deep · 2 km away
46. 2.415 km W of Guinda, CaliforniaThu, Apr 10, 2:58 PM PST · 14783 days ago · 13 km deep · 35 km away
47. 1.55 km W of Cobb, CaliforniaThu, Apr 10, 10:09 PM PST · 14782 days ago · 0 km deep · 1 km away
48. 2.18 km WSW of Cobb, CaliforniaThu, Apr 10, 11:27 PM PST · 14782 days ago · -1 km deep · 4 km away
49. 1.78 km W of Cobb, CaliforniaFri, Apr 11, 4:44 PM PST · 14782 days ago · 2 km deep · 4 km away
50. 1.96 km SW of Cobb, CaliforniaFri, Apr 11, 6:42 PM PST · 14781 days ago · 1 km deep · 3 km away
51. 1.84 km WSW of Cobb, CaliforniaFri, Apr 11, 6:43 PM PST · 14781 days ago · 1 km deep · 0 km away
52. 1.96 km W of Cobb, CaliforniaSat, Apr 12, 3:52 AM PST · 14781 days ago · 2 km deep · 2 km away
53. 2.111 km ESE of Willits, CaliforniaSat, Apr 12, 11:18 PM PST · 14780 days ago · 7 km deep · 74 km away
54. 1.77 km WSW of Cobb, CaliforniaSun, Apr 13, 2:02 AM PST · 14780 days ago · 4 km deep · 3 km away
55. 1.66 km WSW of Cobb, CaliforniaSun, Apr 13, 4:21 AM PST · 14780 days ago · 0 km deep · 2 km away
56. 1.65 km WSW of Cobb, CaliforniaSun, Apr 13, 4:29 AM PST · 14780 days ago · -1 km deep · 2 km away
57. 1.73 km NNW of Clear Lake Riviera, CaliforniaSun, Apr 13, 5:52 PM PST · 14779 days ago · -1 km deep · 19 km away
58. 1.97 km W of Cobb, CaliforniaTue, Apr 15, 5:00 AM PST · 14778 days ago · 3 km deep · 3 km away
59. 2.910 km NW of Philo, CaliforniaWed, Apr 16, 8:37 AM PST · 14777 days ago · 5 km deep · 74 km away
60. 1.57 km W of Cobb, CaliforniaWed, Apr 16, 4:34 PM PST · 14777 days ago · 4 km deep · 3 km away

The first 60 of 171.

Before

1. 1.6Northern CaliforniaTue, Mar 25, 2:23 PM PST · 14799 days ago · 3 km deep · 2 km away
2. 1.84 km WSW of Cobb, CaliforniaTue, Mar 25, 6:00 AM PST · 14799 days ago · 1 km deep · 1 km away
3. 2.14 km WSW of Cobb, CaliforniaTue, Mar 25, 6:00 AM PST · 14799 days ago · 1 km deep · 1 km away
4. 2.19 km E of Elmira, CaliforniaSun, Mar 23, 2:12 PM PST · 14801 days ago · 17 km deep · 99 km away
5. 2.08 km WSW of Cobb, CaliforniaSat, Mar 22, 11:31 PM PST · 14801 days ago · 3 km deep · 4 km away
6. 2.77 km W of Cobb, CaliforniaSat, Mar 22, 8:59 PM PST · 14801 days ago · 1 km deep · 3 km away
7. 3.67 km W of Cobb, CaliforniaSat, Mar 22, 8:58 PM PST · 14801 days ago · 0 km deep · 3 km away
8. 2.210 km ESE of Willits, CaliforniaSat, Mar 22, 5:55 PM PST · 14801 days ago · 7 km deep · 75 km away
9. 1.77 km W of Cobb, CaliforniaSat, Mar 22, 11:30 AM PST · 14802 days ago · 3 km deep · 3 km away
10. 2.07 km ESE of Cloverdale, CaliforniaSat, Mar 22, 6:40 AM PST · 14802 days ago · 5 km deep · 14 km away
11. 1.76 km W of Cobb, CaliforniaSat, Mar 22, 1:38 AM PST · 14802 days ago · 3 km deep · 3 km away
12. 2.37 km WSW of Cobb, CaliforniaFri, Mar 21, 5:40 AM PST · 14803 days ago · 0 km deep · 3 km away
13. 1.64 km WSW of Cobb, CaliforniaThu, Mar 20, 3:33 AM PST · 14804 days ago · 1 km deep · 1 km away
14. 1.825 km ENE of Potter Valley, CaliforniaThu, Mar 20, 3:19 AM PST · 14804 days ago · 1 km deep · 65 km away
15. 1.65 km W of Cobb, CaliforniaThu, Mar 20, 12:43 AM PST · 14804 days ago · 0 km deep · 2 km away
16. 1.57 km W of Cobb, CaliforniaThu, Mar 20, 12:28 AM PST · 14804 days ago · 3 km deep · 3 km away
17. 1.87 km W of Cobb, CaliforniaWed, Mar 19, 10:21 PM PST · 14804 days ago · 3 km deep · 3 km away
18. 1.77 km WSW of Cobb, CaliforniaWed, Mar 19, 7:39 PM PST · 14804 days ago · 3 km deep · 3 km away
19. 1.52 km SSE of Roseland, CaliforniaWed, Mar 19, 4:43 PM PST · 14805 days ago · 4 km deep · 45 km away
20. 1.64 km W of Cobb, CaliforniaWed, Mar 19, 1:39 PM PST · 14805 days ago · -1 km deep · 0 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1136780. Read Wed, Sep 30, 2026, 12:39 PM UTC.