M2.5 earthquake 7 km W of Cobb, California

Magnitude

2.5 (md), micro

Local time

Tue, Mar 12, 1985, 7:54 AM PST

UTC

1985-03-12 15:54:33 UTC

Depth

2.5 km (1.5 mi), shallow

Epicenter

38.818° N, 122.813° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.4 km in depth

Magnitude uncertainty

±0.13

Depth from

From location

Station coverage gap

41°

Stations used

24

• Cobb, CaliforniaPopulation 1,778. Forecast8 kmW
• Clearlake, CaliforniaPopulation 15,182. Forecast22 kmSW
• Santa Rosa, CaliforniaPopulation 178,127. Forecast43 kmNNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast669 kmNW

After

1. 1.87 km WSW of Cobb, CaliforniaThu, Mar 21, 8:08 PM PST · 15159 days ago · 1 km deep · 1 km away
2. 1.819 km NNE of Upper Lake, CaliforniaThu, Mar 21, 10:21 PM PST · 15159 days ago · 0 km deep · 57 km away
3. 2.27 km WSW of Cobb, CaliforniaFri, Mar 22, 3:15 AM PST · 15159 days ago · 2 km deep · 2 km away
4. 3.04 km W of Cobb, CaliforniaFri, Mar 22, 5:13 AM PST · 15159 days ago · -1 km deep · 3 km away
5. 1.68 km W of Cobb, CaliforniaFri, Mar 22, 9:46 AM PST · 15159 days ago · 0 km deep · 1 km away
6. 2.35 km SW of Cobb, CaliforniaFri, Mar 22, 8:39 PM PST · 15158 days ago · 1 km deep · 6 km away
7. 1.912 km NW of Upper Lake, CaliforniaSat, Mar 23, 4:40 AM PST · 15158 days ago · 5 km deep · 50 km away
8. 3.27 km NNE of Hopland, CaliforniaSat, Mar 23, 6:55 AM PST · 15158 days ago · 2 km deep · 34 km away
9. 1.96 km W of Cobb, CaliforniaSat, Mar 23, 2:01 PM PST · 15158 days ago · 3 km deep · 1 km away
10. 2.09 km NNE of Angwin, CaliforniaSat, Mar 23, 3:28 PM PST · 15158 days ago · -1 km deep · 41 km away
11. 2.06 km SW of Cobb, CaliforniaSat, Mar 23, 9:09 PM PST · 15157 days ago · 1 km deep · 6 km away
12. 1.55 km SSW of Cobb, CaliforniaSun, Mar 24, 9:56 AM PST · 15157 days ago · 1 km deep · 6 km away
13. 2.36 km WSW of Cobb, CaliforniaSun, Mar 24, 9:42 PM PST · 15156 days ago · -1 km deep · 4 km away
14. 1.86 km WSW of Cobb, CaliforniaSun, Mar 24, 9:43 PM PST · 15156 days ago · 0 km deep · 4 km away
15. 1.87 km WSW of Cobb, CaliforniaSun, Mar 24, 10:12 PM PST · 15156 days ago · 1 km deep · 2 km away
16. 2.14 km WSW of Cobb, CaliforniaSun, Mar 24, 11:25 PM PST · 15156 days ago · 2 km deep · 3 km away
17. 1.65 km SW of Cobb, CaliforniaSun, Mar 24, 11:37 PM PST · 15156 days ago · 1 km deep · 5 km away
18. 1.96 km WSW of Cobb, CaliforniaWed, Mar 27, 6:53 AM PST · 15154 days ago · 4 km deep · 2 km away
19. 1.66 km W of Cobb, CaliforniaWed, Mar 27, 7:34 PM PST · 15153 days ago · 3 km deep · 2 km away
20. 1.817 km ESE of Hidden Valley Lake, CaliforniaThu, Mar 28, 5:10 AM PST · 15153 days ago · 4 km deep · 38 km away
21. 2.97 km W of Cobb, CaliforniaThu, Mar 28, 5:18 AM PST · 15153 days ago · 1 km deep · 1 km away
22. 1.6Northern CaliforniaThu, Mar 28, 5:19 AM PST · 15153 days ago · 1 km deep · 1 km away
23. 1.88 km W of Cobb, CaliforniaThu, Mar 28, 6:58 AM PST · 15153 days ago · 0 km deep · 0 km away
24. 2.25 km E of Santa Rosa, CaliforniaThu, Mar 28, 1:43 PM PST · 15153 days ago · 0 km deep · 45 km away
25. 1.67 km WSW of Cobb, CaliforniaThu, Mar 28, 6:02 PM PST · 15152 days ago · 0 km deep · 2 km away
26. 1.919 km WSW of Williams, CaliforniaThu, Mar 28, 8:29 PM PST · 15152 days ago · 1 km deep · 51 km away
27. 1.67 km WSW of Cobb, CaliforniaThu, Mar 28, 10:20 PM PST · 15152 days ago · 1 km deep · 2 km away
28. 1.64 km NNE of Clearlake, CaliforniaThu, Mar 28, 11:16 PM PST · 15152 days ago · 0 km deep · 26 km away
29. 1.97 km W of Cobb, CaliforniaFri, Mar 29, 6:48 AM PST · 15152 days ago · 3 km deep · 1 km away
30. 2.313 km SSW of Guinda, CaliforniaFri, Mar 29, 2:36 PM PST · 15152 days ago · 0 km deep · 48 km away
31. 1.62 km SSE of Clear Lake Riviera, CaliforniaFri, Mar 29, 5:47 PM PST · 15151 days ago · 3 km deep · 16 km away
32. 2.420 km WSW of Williams, CaliforniaSat, Mar 30, 4:47 AM PST · 15151 days ago · 0 km deep · 50 km away
33. 3.37 km W of Cobb, CaliforniaSat, Mar 30, 2:52 PM PST · 15151 days ago · 4 km deep · 0 km away
34. 1.818 km W of Williams, CaliforniaSat, Mar 30, 3:42 PM PST · 15151 days ago · 4 km deep · 52 km away
35. 1.77 km WSW of Cobb, CaliforniaSat, Mar 30, 4:29 PM PST · 15151 days ago · 1 km deep · 2 km away
36. 1.67 km W of Cobb, CaliforniaSat, Mar 30, 4:48 PM PST · 15150 days ago · 3 km deep · 0 km away
37. 1.65 km SW of Cobb, CaliforniaSat, Mar 30, 5:10 PM PST · 15150 days ago · 0 km deep · 5 km away
38. 1.62 km SW of Cobb, CaliforniaSat, Mar 30, 9:19 PM PST · 15150 days ago · -1 km deep · 6 km away
39. 1.75 km W of Cobb, CaliforniaSat, Mar 30, 10:05 PM PST · 15150 days ago · 0 km deep · 2 km away
40. 1.67 km W of Cobb, CaliforniaSun, Mar 31, 12:07 AM PST · 15150 days ago · 3 km deep · 1 km away
41. 1.78 km W of Cobb, CaliforniaSun, Mar 31, 10:31 AM PST · 15150 days ago · 1 km deep · 1 km away
42. 1.6Northern CaliforniaSun, Mar 31, 11:05 AM PST · 15150 days ago · 9 km deep · 49 km away
43. 2.56 km E of Santa Rosa, CaliforniaSun, Mar 31, 7:48 PM PST · 15149 days ago · 1 km deep · 45 km away
44. 1.66 km WSW of Cobb, CaliforniaMon, Apr 1, 5:55 AM PST · 15149 days ago · 3 km deep · 2 km away
45. 3.220 km WSW of Williams, CaliforniaMon, Apr 1, 6:09 AM PST · 15149 days ago · 5 km deep · 49 km away
46. 1.719 km WSW of Williams, CaliforniaMon, Apr 1, 6:25 AM PST · 15149 days ago · 2 km deep · 50 km away
47. 2.420 km WSW of Williams, CaliforniaMon, Apr 1, 9:17 AM PST · 15149 days ago · 1 km deep · 50 km away
48. 1.617 km W of Williams, CaliforniaMon, Apr 1, 9:17 AM PST · 15149 days ago · 3 km deep · 53 km away
49. 1.56 km ESE of Hopland, CaliforniaMon, Apr 1, 12:17 PM PST · 15149 days ago · 1 km deep · 25 km away
50. 2.220 km WSW of Williams, CaliforniaMon, Apr 1, 7:57 PM PST · 15148 days ago · 6 km deep · 50 km away
51. 2.520 km WSW of Williams, CaliforniaMon, Apr 1, 7:59 PM PST · 15148 days ago · 5 km deep · 50 km away
52. 1.57 km WSW of Cobb, CaliforniaMon, Apr 1, 8:13 PM PST · 15148 days ago · 5 km deep · 3 km away
53. 1.64 km W of Cobb, CaliforniaMon, Apr 1, 9:49 PM PST · 15148 days ago · -1 km deep · 3 km away
54. 2.417 km WSW of Williams, CaliforniaTue, Apr 2, 8:14 AM PST · 15148 days ago · 5 km deep · 53 km away
55. 3.15 km WSW of Cobb, CaliforniaWed, Apr 3, 12:39 AM PST · 15147 days ago · 0 km deep · 4 km away
56. 1.95 km W of Cobb, CaliforniaWed, Apr 3, 4:06 AM PST · 15147 days ago · 0 km deep · 3 km away
57. 1.95 km SW of Cobb, CaliforniaThu, Apr 4, 12:43 AM PST · 15146 days ago · 0 km deep · 4 km away
58. 2.219 km WSW of Williams, CaliforniaThu, Apr 4, 3:36 AM PST · 15146 days ago · 4 km deep · 50 km away
59. 2.120 km WSW of Williams, CaliforniaThu, Apr 4, 3:59 AM PST · 15146 days ago · 2 km deep · 49 km away
60. 2.18 km WSW of Cobb, CaliforniaThu, Apr 4, 12:38 PM PST · 15146 days ago · 3 km deep · 3 km away

The first 60 of 179.

From the USGS Earthquake Hazards Program and its partner networks, event nc43592. Read Tue, Sep 22, 2026, 12:10 PM UTC.