M1.9 earthquake 8 km WSW of Cobb, California

Magnitude

1.9 (md), micro

Local time

Fri, Mar 15, 1985, 8:32 PM PST

UTC

1985-03-16 04:32:59 UTC

Depth

3.0 km (1.8 mi), shallow

Epicenter

38.797° N, 122.810° 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

±0.08

Depth from

From location

Station coverage gap

70°

Stations used

17

• Cobb, CaliforniaPopulation 1,778. Forecast8 kmWSW
• Healdsburg, CaliforniaPopulation 11,742. Forecast21 kmNNE
• Santa Rosa, CaliforniaPopulation 178,127. Forecast41 kmNNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast667 kmNW

After

1. 2.36 km WSW of Cobb, CaliforniaSun, Mar 24, 9:42 PM PST · 15156 days ago · -1 km deep · 2 km away
2. 1.86 km WSW of Cobb, CaliforniaSun, Mar 24, 9:43 PM PST · 15156 days ago · 0 km deep · 2 km away
3. 1.87 km WSW of Cobb, CaliforniaSun, Mar 24, 10:12 PM PST · 15156 days ago · 1 km deep · 1 km away
4. 2.14 km WSW of Cobb, CaliforniaSun, Mar 24, 11:25 PM PST · 15156 days ago · 2 km deep · 3 km away
5. 1.65 km SW of Cobb, CaliforniaSun, Mar 24, 11:37 PM PST · 15156 days ago · 1 km deep · 3 km away
6. 1.96 km WSW of Cobb, CaliforniaWed, Mar 27, 6:53 AM PST · 15154 days ago · 4 km deep · 2 km away
7. 1.66 km W of Cobb, CaliforniaWed, Mar 27, 7:34 PM PST · 15154 days ago · 3 km deep · 3 km away
8. 1.817 km ESE of Hidden Valley Lake, CaliforniaThu, Mar 28, 5:10 AM PST · 15153 days ago · 4 km deep · 38 km away
9. 2.97 km W of Cobb, CaliforniaThu, Mar 28, 5:18 AM PST · 15153 days ago · 1 km deep · 2 km away
10. 1.6Northern CaliforniaThu, Mar 28, 5:19 AM PST · 15153 days ago · 1 km deep · 1 km away
11. 1.88 km W of Cobb, CaliforniaThu, Mar 28, 6:58 AM PST · 15153 days ago · 0 km deep · 2 km away
12. 2.25 km E of Santa Rosa, CaliforniaThu, Mar 28, 1:43 PM PST · 15153 days ago · 0 km deep · 43 km away
13. 1.67 km WSW of Cobb, CaliforniaThu, Mar 28, 6:02 PM PST · 15153 days ago · 0 km deep · 1 km away
14. 1.919 km WSW of Williams, CaliforniaThu, Mar 28, 8:29 PM PST · 15153 days ago · 1 km deep · 52 km away
15. 1.67 km WSW of Cobb, CaliforniaThu, Mar 28, 10:20 PM PST · 15152 days ago · 1 km deep · 1 km away
16. 1.64 km NNE of Clearlake, CaliforniaThu, Mar 28, 11:16 PM PST · 15152 days ago · 0 km deep · 28 km away
17. 1.97 km W of Cobb, CaliforniaFri, Mar 29, 6:48 AM PST · 15152 days ago · 3 km deep · 2 km away
18. 2.313 km SSW of Guinda, CaliforniaFri, Mar 29, 2:36 PM PST · 15152 days ago · 0 km deep · 48 km away
19. 1.62 km SSE of Clear Lake Riviera, CaliforniaFri, Mar 29, 5:47 PM PST · 15152 days ago · 3 km deep · 18 km away
20. 2.420 km WSW of Williams, CaliforniaSat, Mar 30, 4:47 AM PST · 15151 days ago · 0 km deep · 51 km away
21. 3.37 km W of Cobb, CaliforniaSat, Mar 30, 2:52 PM PST · 15151 days ago · 4 km deep · 2 km away
22. 1.818 km W of Williams, CaliforniaSat, Mar 30, 3:42 PM PST · 15151 days ago · 4 km deep · 53 km away
23. 1.77 km WSW of Cobb, CaliforniaSat, Mar 30, 4:29 PM PST · 15151 days ago · 1 km deep · 1 km away
24. 1.67 km W of Cobb, CaliforniaSat, Mar 30, 4:48 PM PST · 15151 days ago · 3 km deep · 2 km away
25. 1.65 km SW of Cobb, CaliforniaSat, Mar 30, 5:10 PM PST · 15151 days ago · 0 km deep · 3 km away
26. 1.62 km SW of Cobb, CaliforniaSat, Mar 30, 9:19 PM PST · 15150 days ago · -1 km deep · 6 km away
27. 1.75 km W of Cobb, CaliforniaSat, Mar 30, 10:05 PM PST · 15150 days ago · 0 km deep · 3 km away
28. 1.67 km W of Cobb, CaliforniaSun, Mar 31, 12:07 AM PST · 15150 days ago · 3 km deep · 3 km away
29. 1.78 km W of Cobb, CaliforniaSun, Mar 31, 10:31 AM PST · 15150 days ago · 1 km deep · 3 km away
30. 1.6Northern CaliforniaSun, Mar 31, 11:05 AM PST · 15150 days ago · 9 km deep · 47 km away
31. 2.56 km E of Santa Rosa, CaliforniaSun, Mar 31, 7:48 PM PST · 15150 days ago · 1 km deep · 43 km away
32. 1.66 km WSW of Cobb, CaliforniaMon, Apr 1, 5:55 AM PST · 15149 days ago · 3 km deep · 2 km away
33. 3.220 km WSW of Williams, CaliforniaMon, Apr 1, 6:09 AM PST · 15149 days ago · 5 km deep · 50 km away
34. 1.719 km WSW of Williams, CaliforniaMon, Apr 1, 6:25 AM PST · 15149 days ago · 2 km deep · 52 km away
35. 2.420 km WSW of Williams, CaliforniaMon, Apr 1, 9:17 AM PST · 15149 days ago · 1 km deep · 52 km away
36. 1.617 km W of Williams, CaliforniaMon, Apr 1, 9:17 AM PST · 15149 days ago · 3 km deep · 54 km away
37. 1.56 km ESE of Hopland, CaliforniaMon, Apr 1, 12:17 PM PST · 15149 days ago · 1 km deep · 27 km away
38. 2.220 km WSW of Williams, CaliforniaMon, Apr 1, 7:57 PM PST · 15149 days ago · 6 km deep · 51 km away
39. 2.520 km WSW of Williams, CaliforniaMon, Apr 1, 7:59 PM PST · 15149 days ago · 5 km deep · 51 km away
40. 1.57 km WSW of Cobb, CaliforniaMon, Apr 1, 8:13 PM PST · 15149 days ago · 5 km deep · 1 km away
41. 1.64 km W of Cobb, CaliforniaMon, Apr 1, 9:49 PM PST · 15148 days ago · -1 km deep · 4 km away
42. 2.417 km WSW of Williams, CaliforniaTue, Apr 2, 8:14 AM PST · 15148 days ago · 5 km deep · 54 km away
43. 3.15 km WSW of Cobb, CaliforniaWed, Apr 3, 12:39 AM PST · 15147 days ago · 0 km deep · 3 km away
44. 1.95 km W of Cobb, CaliforniaWed, Apr 3, 4:06 AM PST · 15147 days ago · 0 km deep · 4 km away
45. 1.95 km SW of Cobb, CaliforniaThu, Apr 4, 12:43 AM PST · 15146 days ago · 0 km deep · 3 km away
46. 2.219 km WSW of Williams, CaliforniaThu, Apr 4, 3:36 AM PST · 15146 days ago · 4 km deep · 52 km away
47. 2.120 km WSW of Williams, CaliforniaThu, Apr 4, 3:59 AM PST · 15146 days ago · 2 km deep · 51 km away
48. 2.18 km WSW of Cobb, CaliforniaThu, Apr 4, 12:38 PM PST · 15146 days ago · 3 km deep · 0 km away
49. 1.76 km W of Cobb, CaliforniaThu, Apr 4, 1:36 PM PST · 15146 days ago · 3 km deep · 3 km away
50. 1.97 km WSW of Cobb, CaliforniaThu, Apr 4, 4:46 PM PST · 15146 days ago · 1 km deep · 1 km away
51. 1.94 km N of Larkfield-Wikiup, CaliforniaThu, Apr 4, 5:00 PM PST · 15146 days ago · 3 km deep · 28 km away
52. 2.67 km WSW of Cobb, CaliforniaFri, Apr 5, 1:34 AM PST · 15145 days ago · 0 km deep · 1 km away
53. 2.27 km NNE of Elk Creek, CaliforniaFri, Apr 5, 4:55 AM PST · 15145 days ago · 12 km deep · 100 km away
54. 1.68 km W of Cobb, CaliforniaFri, Apr 5, 4:11 PM PST · 15145 days ago · 1 km deep · 2 km away
55. 2.04 km NNW of Larkfield-Wikiup, CaliforniaFri, Apr 5, 4:52 PM PST · 15145 days ago · 3 km deep · 28 km away
56. 1.94 km W of Cobb, CAFri, Apr 5, 6:40 PM PST · 15145 days ago · 0 km deep · 5 km away
57. 2.09 km N of Upper Lake, CaliforniaFri, Apr 5, 11:05 PM PST · 15144 days ago · 4 km deep · 51 km away
58. 2.63 km SSE of Clear Lake Riviera, CaliforniaSat, Apr 6, 1:25 AM PST · 15144 days ago · 2 km deep · 17 km away
59. 1.72 km SSE of Clear Lake Riviera, CaliforniaSat, Apr 6, 1:25 AM PST · 15144 days ago · 1 km deep · 18 km away
60. 1.56 km WSW of Cobb, CaliforniaSat, Apr 6, 6:31 AM PST · 15144 days ago · 0 km deep · 2 km away

The first 60 of 179.

From the USGS Earthquake Hazards Program and its partner networks, event nc45198. Read Tue, Sep 22, 2026, 4:04 PM UTC.