M2.5 earthquake 3 km SW of Cobb, California

Magnitude

2.5 (md), micro

Local time

Sun, May 4, 1986, 1:24 AM PDT

UTC

1986-05-04 08:24:16 UTC

Depth

1.3 km (0.8 mi), shallow

Epicenter

38.796° N, 122.748° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.1 km horizontally, 0.4 km in depth

Magnitude uncertainty

±0.12

Depth from

From location

Station coverage gap

48°

Stations used

28

• Cobb, CaliforniaPopulation 1,778. Forecast4 kmSW
• Clearlake, CaliforniaPopulation 15,182. Forecast21 kmSSW
• Santa Rosa, CaliforniaPopulation 178,127. Forecast40 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast664 kmNW

After

1. 1.54 km S of Cobb, CaliforniaSun, May 4, 7:16 AM PDT · 14757 days ago · 2 km deep · 3 km away
2. 1.55 km WSW of Cobb, CaliforniaSun, May 4, 3:42 PM PDT · 14756 days ago · 1 km deep · 3 km away
3. 2.00 km W of Clear Lake Riviera, CaliforniaMon, May 5, 1:24 AM PDT · 14756 days ago · 0 km deep · 18 km away
4. 1.74 km WSW of Cobb, CaliforniaMon, May 5, 1:28 AM PDT · 14756 days ago · 1 km deep · 2 km away
5. 1.66 km W of Cobb, CaliforniaMon, May 5, 3:49 AM PDT · 14756 days ago · 3 km deep · 5 km away
6. 1.75 km WNW of Cobb, CaliforniaMon, May 5, 1:14 PM PDT · 14755 days ago · 3 km deep · 6 km away
7. 1.67 km W of Cobb, CaliforniaTue, May 6, 4:16 AM PDT · 14755 days ago · 0 km deep · 5 km away
8. 3.612 km W of Ukiah, CaliforniaTue, May 6, 7:51 PM PDT · 14754 days ago · 26 km deep · 66 km away
9. 1.67 km W of Cobb, CaliforniaTue, May 6, 9:44 PM PDT · 14754 days ago · 3 km deep · 6 km away
10. 1.67 km SSE of Willits, CaliforniaWed, May 7, 7:29 AM PDT · 14754 days ago · 4 km deep · 79 km away
11. 2.25 km SW of Cobb, CaliforniaWed, May 7, 8:16 PM PDT · 14753 days ago · 1 km deep · 2 km away
12. 2.05 km SW of Cobb, CaliforniaWed, May 7, 9:10 PM PDT · 14753 days ago · 0 km deep · 2 km away
13. 1.85 km SW of Cobb, CaliforniaThu, May 8, 6:10 AM PDT · 14753 days ago · 0 km deep · 2 km away
14. 4.17 km W of Lodoga, CaliforniaThu, May 8, 7:14 AM PDT · 14753 days ago · 3 km deep · 59 km away
15. 1.84 km WSW of Cobb, CaliforniaThu, May 8, 10:26 AM PDT · 14752 days ago · 1 km deep · 3 km away
16. 1.65 km WSW of Cobb, CaliforniaThu, May 8, 1:41 PM PDT · 14752 days ago · 1 km deep · 3 km away
17. 2.15 km W of Cobb, CaliforniaThu, May 8, 1:55 PM PDT · 14752 days ago · 0 km deep · 4 km away
18. 2.14 km NNW of Cobb, CaliforniaSat, May 10, 8:26 AM PDT · 14750 days ago · 0 km deep · 7 km away
19. 1.64 km W of Cobb, CaliforniaSat, May 10, 8:46 AM PDT · 14750 days ago · 0 km deep · 3 km away
20. 1.86 km W of Cobb, CaliforniaSat, May 10, 11:47 PM PDT · 14750 days ago · 3 km deep · 6 km away
21. 1.77 km W of Cobb, CaliforniaSun, May 11, 2:46 AM PDT · 14750 days ago · 3 km deep · 6 km away
22. 1.76 km W of Cobb, CaliforniaSun, May 11, 8:38 AM PDT · 14749 days ago · 0 km deep · 6 km away
23. 3.06 km WSW of Cobb, CaliforniaMon, May 12, 4:51 AM PDT · 14749 days ago · -1 km deep · 4 km away
24. 1.723 km ENE of Potter Valley, CaliforniaMon, May 12, 2:09 PM PDT · 14748 days ago · 9 km deep · 69 km away
25. 2.07 km W of Cobb, CaliforniaTue, May 13, 2:34 AM PDT · 14748 days ago · 3 km deep · 6 km away
26. 2.17 km WSW of Cobb, CaliforniaTue, May 13, 8:45 AM PDT · 14747 days ago · 1 km deep · 5 km away
27. 2.16 km W of Cobb, CaliforniaTue, May 13, 11:33 AM PDT · 14747 days ago · 4 km deep · 6 km away
28. 1.64 km WSW of Cobb, CaliforniaWed, May 14, 4:03 AM PDT · 14747 days ago · 2 km deep · 2 km away
29. 2.25 km WSW of Cobb, CaliforniaWed, May 14, 12:18 PM PDT · 14746 days ago · 4 km deep · 3 km away
30. 2.45 km WSW of Cobb, CaliforniaWed, May 14, 12:20 PM PDT · 14746 days ago · 3 km deep · 3 km away
31. 2.02 km S of Clearlake, CaliforniaWed, May 14, 7:09 PM PDT · 14746 days ago · 5 km deep · 19 km away
32. 2.86 km W of Cobb, CaliforniaWed, May 14, 8:48 PM PDT · 14746 days ago · 2 km deep · 5 km away
33. 2.413 km NNW of Moskowite Corner, CaliforniaThu, May 15, 5:19 AM PDT · 14746 days ago · 11 km deep · 50 km away
34. 2.513 km NNW of Moskowite Corner, CaliforniaThu, May 15, 3:51 PM PDT · 14745 days ago · 6 km deep · 50 km away
35. 2.213 km NNW of Moskowite Corner, CaliforniaThu, May 15, 6:31 PM PDT · 14745 days ago · 3 km deep · 50 km away
36. 1.65 km W of Willows, CaliforniaSat, May 17, 12:40 AM PDT · 14744 days ago · 5 km deep · 91 km away
37. 1.66 km ESE of Geyserville, CaliforniaSat, May 17, 2:43 AM PDT · 14744 days ago · 6 km deep · 15 km away
38. 1.66 km W of Cobb, CaliforniaSat, May 17, 8:04 PM PDT · 14743 days ago · 0 km deep · 5 km away
39. 2.55 km SW of Cobb, CaliforniaSat, May 17, 8:18 PM PDT · 14743 days ago · 1 km deep · 2 km away
40. 1.88 km W of Cobb, CaliforniaSun, May 18, 2:02 AM PDT · 14743 days ago · 3 km deep · 6 km away
41. 2.811 km ESE of Hopland, CaliforniaSun, May 18, 9:47 AM PDT · 14742 days ago · 0 km deep · 26 km away
42. 2.55 km SW of Cobb, CaliforniaSun, May 18, 12:32 PM PDT · 14742 days ago · 0 km deep · 2 km away
43. 2.57 km WSW of Cobb, CaliforniaSun, May 18, 3:52 PM PDT · 14742 days ago · -1 km deep · 4 km away
44. 1.97 km W of Cobb, CaliforniaSun, May 18, 3:57 PM PDT · 14742 days ago · 3 km deep · 6 km away
45. 2.57 km ENE of Brooktrails, CaliforniaSun, May 18, 6:17 PM PDT · 14742 days ago · 4 km deep · 88 km away
46. 2.86 km W of Cobb, CaliforniaMon, May 19, 3:07 AM PDT · 14742 days ago · 3 km deep · 5 km away
47. 1.57 km WSW of Cobb, CaliforniaMon, May 19, 2:10 PM PDT · 14741 days ago · 3 km deep · 6 km away
48. 2.412 km ESE of Hidden Valley Lake, CaliforniaMon, May 19, 2:53 PM PDT · 14741 days ago · -1 km deep · 29 km away
49. 2.16 km W of Cobb, CaliforniaMon, May 19, 7:08 PM PDT · 14741 days ago · 2 km deep · 5 km away
50. 1.67 km W of Cobb, CaliforniaMon, May 19, 7:11 PM PDT · 14741 days ago · -1 km deep · 5 km away
51. 2.26 km WNW of Cobb, CaliforniaTue, May 20, 1:24 PM PDT · 14740 days ago · -1 km deep · 6 km away
52. 1.57 km W of Cobb, CaliforniaTue, May 20, 4:13 PM PDT · 14740 days ago · 3 km deep · 6 km away
53. 1.86 km SW of Cobb, CaliforniaTue, May 20, 6:38 PM PDT · 14740 days ago · 1 km deep · 3 km away
54. 2.59 km W of Cobb, CaliforniaWed, May 21, 1:36 AM PDT · 14740 days ago · 0 km deep · 7 km away
55. 1.55 km WSW of Cobb, CaliforniaWed, May 21, 6:00 AM PDT · 14740 days ago · 3 km deep · 4 km away
56. 1.69 km W of Cobb, CaliforniaWed, May 21, 7:39 AM PDT · 14740 days ago · 2 km deep · 9 km away
57. 1.911 km NNE of Geyserville, CaliforniaWed, May 21, 2:12 PM PDT · 14739 days ago · 3 km deep · 10 km away
58. 1.66 km W of Cobb, CaliforniaWed, May 21, 5:28 PM PDT · 14739 days ago · 3 km deep · 5 km away
59. 1.68 km W of Cobb, CaliforniaWed, May 21, 8:44 PM PDT · 14739 days ago · 2 km deep · 7 km away
60. 1.65 km WNW of Cobb, CaliforniaThu, May 22, 12:29 AM PDT · 14739 days ago · 1 km deep · 5 km away

The first 60 of 157.

Before

1. 1.713 km SE of Hidden Valley Lake, CaliforniaSat, May 3, 3:44 PM PDT · 14757 days ago · -1 km deep · 28 km away
2. 1.76 km WSW of Cobb, CaliforniaSat, May 3, 12:41 PM PDT · 14757 days ago · 9 km deep · 4 km away
3. 1.58 km WSW of Cobb, CaliforniaFri, May 2, 6:44 PM PDT · 14758 days ago · 4 km deep · 5 km away
4. 1.65 km SW of Cobb, CaliforniaFri, May 2, 4:55 PM PDT · 14758 days ago · 2 km deep · 2 km away
5. 2.06 km SW of Cobb, CaliforniaFri, May 2, 9:36 AM PDT · 14758 days ago · 1 km deep · 3 km away
6. 1.97 km WSW of Cobb, CaliforniaFri, May 2, 5:39 AM PDT · 14759 days ago · 2 km deep · 5 km away
7. 1.87 km W of Cobb, CaliforniaThu, May 1, 6:55 AM PDT · 14760 days ago · 3 km deep · 6 km away
8. 1.97 km WSW of Cobb, CaliforniaThu, May 1, 6:39 AM PDT · 14760 days ago · 0 km deep · 4 km away
9. 1.76 km W of Cobb, CaliforniaWed, Apr 30, 11:44 PM PDT · 14760 days ago · 4 km deep · 5 km away
10. 1.66 km WSW of Cobb, CaliforniaWed, Apr 30, 11:03 PM PDT · 14760 days ago · 3 km deep · 4 km away
11. 2.02 km SSW of Green Valley, CaliforniaWed, Apr 30, 12:33 PM PDT · 14760 days ago · 6 km deep · 80 km away
12. 2.14 km SW of Oakville, CaliforniaWed, Apr 30, 12:08 PM PDT · 14760 days ago · 11 km deep · 51 km away
13. 1.86 km W of Cobb, CaliforniaWed, Apr 30, 11:28 AM PDT · 14760 days ago · 3 km deep · 6 km away
14. 2.37 km W of Cobb, CaliforniaWed, Apr 30, 4:52 AM PDT · 14761 days ago · 3 km deep · 6 km away
15. 2.18 km WSW of Cobb, CaliforniaWed, Apr 30, 3:14 AM PDT · 14761 days ago · 4 km deep · 6 km away
16. 1.97 km W of Cobb, CaliforniaTue, Apr 29, 8:30 PM PDT · 14761 days ago · 3 km deep · 6 km away
17. 2.01 km SE of Larkfield-Wikiup, CaliforniaTue, Apr 29, 3:08 AM PDT · 14762 days ago · 4 km deep · 32 km away
18. 2.23 km W of Cobb, CaliforniaTue, Apr 29, 1:58 AM PDT · 14762 days ago · 1 km deep · 3 km away
19. 1.86 km WSW of Cobb, CaliforniaMon, Apr 28, 2:53 PM PDT · 14762 days ago · 1 km deep · 4 km away
20. 1.829 km NE of Potter Valley, CaliforniaSun, Apr 27, 12:46 PM PDT · 14763 days ago · 4 km deep · 83 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc71913. Read Mon, Sep 28, 2026, 2:30 AM UTC.