M2.6 earthquake 8 km W of Cobb, California

Magnitude

2.6 (md), micro

Local time

Wed, Sep 24, 1986, 3:58 AM PDT

UTC

1986-09-24 10:58:13 UTC

Depth

-0.8 km (-0.5 mi), shallow

Epicenter

38.812° N, 122.821° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.7 km in depth

Magnitude uncertainty

±0.14

Depth from

From location

Station coverage gap

46°

Stations used

23

• Cobb, CaliforniaPopulation 1,778. Forecast9 kmW
• Healdsburg, CaliforniaPopulation 11,742. Forecast23 kmN
• Santa Rosa, CaliforniaPopulation 178,127. Forecast42 kmNNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast669 kmNW

After

1. 1.97 km W of Cobb, CaliforniaWed, Sep 24, 9:41 AM PDT · 14608 days ago · 0 km deep · 1 km away
2. 1.514 km E of Angwin, CaliforniaWed, Sep 24, 10:17 PM PDT · 14608 days ago · 4 km deep · 54 km away
3. 1.615 km WSW of Cloverdale, CaliforniaThu, Sep 25, 10:25 AM PDT · 14607 days ago · 1 km deep · 32 km away
4. 2.120 km ENE of Potter Valley, CaliforniaThu, Sep 25, 3:08 PM PDT · 14607 days ago · 4 km deep · 64 km away
5. 1.76 km W of Cobb, CaliforniaThu, Sep 25, 6:18 PM PDT · 14607 days ago · 3 km deep · 3 km away
6. 1.66 km W of Cobb, CaliforniaThu, Sep 25, 10:47 PM PDT · 14607 days ago · 3 km deep · 2 km away
7. 1.69 km W of Cobb, CaliforniaFri, Sep 26, 2:19 AM PDT · 14607 days ago · 2 km deep · 2 km away
8. 2.14 km W of Cobb, CaliforniaFri, Sep 26, 8:56 AM PDT · 14606 days ago · 0 km deep · 4 km away
9. 2.56 km NE of Talmage, CaliforniaFri, Sep 26, 7:28 PM PDT · 14606 days ago · 0 km deep · 48 km away
10. 1.67 km W of Cobb, CaliforniaSat, Sep 27, 10:22 AM PDT · 14605 days ago · 3 km deep · 1 km away
11. 2.97 km W of Cobb, CASun, Sep 28, 8:05 AM PDT · 14605 days ago · 1 km deep · 2 km away
12. 1.9Northern CaliforniaSun, Sep 28, 8:10 AM PDT · 14604 days ago · 1 km deep · 2 km away
13. 2.86 km WSW of Cobb, CaliforniaSun, Sep 28, 6:47 PM PDT · 14604 days ago · 1 km deep · 2 km away
14. 1.95 km E of Penngrove, CaliforniaSun, Sep 28, 9:48 PM PDT · 14604 days ago · 4 km deep · 59 km away
15. 2.66 km W of Cobb, CaliforniaMon, Sep 29, 3:44 AM PDT · 14604 days ago · 3 km deep · 2 km away
16. 1.97 km W of Cobb, CaliforniaMon, Sep 29, 11:19 PM PDT · 14603 days ago · 3 km deep · 2 km away
17. 2.26 km WSW of Cobb, CaliforniaTue, Sep 30, 9:18 AM PDT · 14602 days ago · 0 km deep · 2 km away
18. 2.44 km WSW of Lakeport, CaliforniaTue, Sep 30, 10:03 AM PDT · 14602 days ago · 14 km deep · 26 km away
19. 2.26 km SSW of Kelseyville, CaliforniaTue, Sep 30, 2:07 PM PDT · 14602 days ago · 39 km deep · 12 km away
20. 1.84 km WSW of Cobb, CaliforniaTue, Sep 30, 9:11 PM PDT · 14602 days ago · -1 km deep · 4 km away
21. 2.47 km W of Cobb, CaliforniaWed, Oct 1, 10:07 AM PDT · 14601 days ago · 1 km deep · 1 km away
22. 1.97 km W of Cobb, CaliforniaWed, Oct 1, 10:08 AM PDT · 14601 days ago · 1 km deep · 2 km away
23. 1.95 km WSW of Cobb, CaliforniaWed, Oct 1, 6:48 PM PDT · 14601 days ago · 2 km deep · 4 km away
24. 2.15 km WSW of Cobb, CaliforniaWed, Oct 1, 6:49 PM PDT · 14601 days ago · -1 km deep · 4 km away
25. 2.024 km NNE of Potter Valley, CaliforniaWed, Oct 1, 7:25 PM PDT · 14601 days ago · 8 km deep · 80 km away
26. 2.25 km E of Redwood Valley, CaliforniaWed, Oct 1, 7:37 PM PDT · 14601 days ago · 1 km deep · 57 km away
27. 1.514 km ESE of Hidden Valley Lake, CaliforniaThu, Oct 2, 2:21 AM PDT · 14601 days ago · 3 km deep · 36 km away
28. 3.020 km ENE of Potter Valley, CaliforniaThu, Oct 2, 10:07 PM PDT · 14600 days ago · 14 km deep · 62 km away
29. 1.919 km ENE of Potter Valley, CaliforniaThu, Oct 2, 10:12 PM PDT · 14600 days ago · 4 km deep · 63 km away
30. 2.615 km ENE of Potter Valley, CaliforniaFri, Oct 3, 8:58 PM PDT · 14599 days ago · 6 km deep · 61 km away
31. 2.36 km W of Cobb, CaliforniaSat, Oct 4, 8:18 PM PDT · 14598 days ago · 2 km deep · 2 km away
32. 2.19 km WNW of Bolinas, CaliforniaSun, Oct 5, 3:10 AM PDT · 14598 days ago · 7 km deep · 96 km away
33. 1.94 km E of Santa Rosa, CaliforniaSun, Oct 5, 1:08 PM PDT · 14597 days ago · 8 km deep · 44 km away
34. 2.04 km NE of Windsor, CaliforniaSun, Oct 5, 4:18 PM PDT · 14597 days ago · 0 km deep · 26 km away
35. 2.01 km WSW of Angwin, CaliforniaSun, Oct 5, 10:26 PM PDT · 14597 days ago · 4 km deep · 41 km away
36. 2.16 km W of Cobb, CaliforniaMon, Oct 6, 4:14 AM PDT · 14597 days ago · 2 km deep · 2 km away
37. 2.86 km W of Cobb, CaliforniaMon, Oct 6, 4:17 AM PDT · 14597 days ago · 2 km deep · 2 km away
38. 2.06 km W of Cobb, CaliforniaMon, Oct 6, 4:53 AM PDT · 14597 days ago · 2 km deep · 2 km away
39. 1.77 km WSW of Cobb, CaliforniaMon, Oct 6, 6:55 AM PDT · 14597 days ago · 3 km deep · 3 km away
40. 2.110 km N of Cloverdale, CaliforniaMon, Oct 6, 11:35 AM PDT · 14596 days ago · 4 km deep · 20 km away
41. 1.813 km S of Comptche, CaliforniaTue, Oct 7, 6:45 AM PDT · 14596 days ago · 2 km deep · 76 km away
42. 1.6Northern CaliforniaTue, Oct 7, 5:57 PM PDT · 14595 days ago · 0 km deep · 5 km away
43. 1.86 km W of Cobb, CaliforniaTue, Oct 7, 9:00 PM PDT · 14595 days ago · 3 km deep · 3 km away
44. 1.67 km W of Cobb, CaliforniaTue, Oct 7, 9:35 PM PDT · 14595 days ago · 3 km deep · 1 km away
45. 2.05 km SW of Cobb, CaliforniaWed, Oct 8, 1:07 AM PDT · 14595 days ago · 1 km deep · 5 km away
46. 1.714 km NE of Willits, CaliforniaFri, Oct 10, 1:31 AM PDT · 14593 days ago · 4 km deep · 82 km away
47. 1.64 km W of Angwin, CaliforniaFri, Oct 10, 10:45 AM PDT · 14592 days ago · 4 km deep · 38 km away
48. 2.617 km SSE of Covelo, CaliforniaFri, Oct 10, 7:44 PM PDT · 14592 days ago · 4 km deep · 97 km away
49. 1.99 km SSW of Lodoga, CaliforniaFri, Oct 10, 7:58 PM PDT · 14592 days ago · 20 km deep · 52 km away
50. 1.65 km SW of Cobb, CaliforniaSat, Oct 11, 5:21 AM PDT · 14592 days ago · 3 km deep · 5 km away
51. 4.04 km SW of Sea Ranch, CaliforniaSat, Oct 11, 11:43 PM PDT · 14591 days ago · 6 km deep · 60 km away
52. 2.01 km W of Sea Ranch, CaliforniaSun, Oct 12, 2:40 AM PDT · 14591 days ago · 4 km deep · 58 km away
53. 1.57 km SSW of Clear Lake Riviera, CaliforniaSun, Oct 12, 3:38 AM PDT · 14591 days ago · 4 km deep · 11 km away
54. 1.77 km WSW of Cobb, CaliforniaSun, Oct 12, 9:15 AM PDT · 14590 days ago · 4 km deep · 2 km away
55. 1.57 km W of Cobb, CaliforniaSun, Oct 12, 4:56 PM PDT · 14590 days ago · 2 km deep · 1 km away
56. 1.77 km W of Cobb, CaliforniaTue, Oct 14, 12:47 AM PDT · 14589 days ago · 3 km deep · 1 km away
57. 2.05 km WSW of Cobb, CaliforniaWed, Oct 15, 4:02 PM PDT · 14587 days ago · -1 km deep · 4 km away
58. 1.63 km W of Geyserville, CaliforniaSat, Oct 18, 10:04 AM PDT · 14584 days ago · 2 km deep · 15 km away
59. 1.810 km ENE of Hidden Valley Lake, CaliforniaSat, Oct 18, 11:23 AM PDT · 14584 days ago · 5 km deep · 32 km away
60. 1.98 km NNE of Geyserville, CaliforniaSat, Oct 18, 2:39 PM PDT · 14584 days ago · 13 km deep · 5 km away

The first 60 of 151.

Before

1. 2.69 km SW of Cobb, CaliforniaTue, Sep 23, 10:14 AM PDT · 14609 days ago · 5 km deep · 7 km away
2. 2.914 km SSW of Cloverdale, CaliforniaMon, Sep 22, 1:00 PM PDT · 14610 days ago · 17 km deep · 27 km away
3. 1.97 km W of Cobb, CaliforniaSat, Sep 20, 12:21 PM PDT · 14612 days ago · 3 km deep · 1 km away
4. 1.80 km SSW of Geyserville, CaliforniaSat, Sep 20, 6:45 AM PDT · 14613 days ago · 8 km deep · 14 km away
5. 2.66 km WSW of Cobb, CaliforniaSat, Sep 20, 4:05 AM PDT · 14613 days ago · 1 km deep · 3 km away
6. 1.80 km WSW of Geyserville, CaliforniaSat, Sep 20, 3:04 AM PDT · 14613 days ago · 7 km deep · 14 km away
7. 2.55 km S of Boonville, CaliforniaFri, Sep 19, 5:51 PM PDT · 14613 days ago · 1 km deep · 51 km away
8. 2.26 km W of Cobb, CaliforniaFri, Sep 19, 8:50 AM PDT · 14613 days ago · 2 km deep · 3 km away
9. 1.87 km WSW of Cobb, CaliforniaFri, Sep 19, 12:42 AM PDT · 14614 days ago · 3 km deep · 2 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc83713. Read Wed, Sep 23, 2026, 2:37 AM UTC.