M1.5 earthquake 7 km W of Cobb, California

Magnitude

1.5 (md), micro

Local time

Sat, Dec 28, 1985, 11:31 PM PST

UTC

1985-12-29 07:31:08 UTC

Depth

1.5 km (0.9 mi), shallow

Epicenter

38.832° N, 122.810° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.3 km in depth

Magnitude uncertainty

±0.15

Depth from

From location

Station coverage gap

45°

Stations used

16

• Cobb, CaliforniaPopulation 1,778. Forecast8 kmW
• Clearlake, CaliforniaPopulation 15,182. Forecast21 kmSW
• Santa Rosa, CaliforniaPopulation 178,127. Forecast44 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast670 kmNW

After

1. 1.66 km W of Cobb, CaliforniaMon, Jan 6, 5:01 AM PST · 14870 days ago · 3 km deep · 1 km away
2. 1.612 km NE of Angwin, CaliforniaMon, Jan 6, 7:36 AM PST · 14870 days ago · 11 km deep · 43 km away
3. 2.16 km SW of Cobb, CaliforniaTue, Jan 7, 6:17 PM PST · 14868 days ago · -1 km deep · 6 km away
4. 1.716 km NNE of Upper Lake, CaliforniaTue, Jan 7, 6:54 PM PST · 14868 days ago · 6 km deep · 52 km away
5. 2.18 km ENE of Lower Lake, CaliforniaTue, Jan 7, 7:36 PM PST · 14868 days ago · 0 km deep · 28 km away
6. 1.919 km ENE of Potter Valley, CaliforniaWed, Jan 8, 12:43 AM PST · 14868 days ago · 6 km deep · 62 km away
7. 1.625 km SE of Covelo, CaliforniaWed, Jan 8, 3:34 AM PST · 14868 days ago · 4 km deep · 89 km away
8. 1.74 km NW of Redwood Valley, CaliforniaWed, Jan 8, 5:44 AM PST · 14868 days ago · 5 km deep · 63 km away
9. 2.45 km NE of Rohnert Park, CaliforniaWed, Jan 8, 6:32 AM PST · 14868 days ago · 5 km deep · 54 km away
10. 1.71 km E of Calpella, CaliforniaWed, Jan 8, 10:56 AM PST · 14867 days ago · 6 km deep · 55 km away
11. 3.68 km WSW of Kelseyville, CaliforniaThu, Jan 9, 8:33 AM PST · 14866 days ago · 4 km deep · 15 km away
12. 1.58 km WNW of Cobb, CaliforniaThu, Jan 9, 12:59 PM PST · 14866 days ago · 6 km deep · 1 km away
13. 1.94 km NW of Redwood Valley, CaliforniaFri, Jan 10, 12:04 AM PST · 14866 days ago · -1 km deep · 63 km away
14. 1.64 km SE of Larkfield-Wikiup, CaliforniaFri, Jan 10, 9:33 AM PST · 14865 days ago · 12 km deep · 39 km away
15. 2.55 km SW of Cobb, CaliforniaSat, Jan 11, 12:17 AM PST · 14865 days ago · 0 km deep · 7 km away
16. 1.64 km WSW of Cobb, CaliforniaSat, Jan 11, 1:51 AM PST · 14865 days ago · 1 km deep · 5 km away
17. 3.04 km WSW of Cobb, CaliforniaSat, Jan 11, 1:52 AM PST · 14865 days ago · 1 km deep · 5 km away
18. 1.69 km W of Cobb, CaliforniaSat, Jan 11, 9:15 AM PST · 14864 days ago · 0 km deep · 3 km away
19. 1.64 km WSW of Cobb, CaliforniaSat, Jan 11, 9:54 AM PST · 14864 days ago · 1 km deep · 4 km away
20. 2.06 km W of Cobb, CaliforniaSat, Jan 11, 1:11 PM PST · 14864 days ago · 2 km deep · 3 km away
21. 1.68 km W of Cobb, CaliforniaSat, Jan 11, 1:11 PM PST · 14864 days ago · 4 km deep · 2 km away
22. 2.66 km W of Cobb, CaliforniaSat, Jan 11, 10:59 PM PST · 14864 days ago · 1 km deep · 2 km away
23. 1.76 km W of Cobb, CaliforniaSun, Jan 12, 8:35 AM PST · 14863 days ago · 2 km deep · 2 km away
24. 1.86 km W of Cobb, CaliforniaSun, Jan 12, 6:57 PM PST · 14863 days ago · 3 km deep · 1 km away
25. 1.54 km WSW of Cobb, CaliforniaMon, Jan 13, 1:18 AM PST · 14863 days ago · 1 km deep · 5 km away
26. 1.67 km W of Cobb, CaliforniaMon, Jan 13, 8:50 AM PST · 14862 days ago · 3 km deep · 2 km away
27. 1.65 km W of Cobb, CaliforniaMon, Jan 13, 9:42 AM PST · 14862 days ago · 2 km deep · 2 km away
28. 1.66 km W of Cobb, CaliforniaMon, Jan 13, 4:35 PM PST · 14862 days ago · 3 km deep · 1 km away
29. 1.84 km SW of Cobb, CaliforniaMon, Jan 13, 5:31 PM PST · 14862 days ago · 0 km deep · 6 km away
30. 2.29 km WSW of Cobb, CaliforniaTue, Jan 14, 6:01 AM PST · 14862 days ago · 1 km deep · 4 km away
31. 2.26 km W of Cobb, CaliforniaTue, Jan 14, 7:01 PM PST · 14861 days ago · 3 km deep · 1 km away
32. 1.55 km SW of Cobb, CaliforniaWed, Jan 15, 1:18 AM PST · 14861 days ago · 0 km deep · 5 km away
33. 1.612 km NNE of Brooktrails, CaliforniaWed, Jan 15, 3:18 AM PST · 14861 days ago · 4 km deep · 92 km away
34. 1.55 km SW of Cobb, CaliforniaWed, Jan 15, 7:30 AM PST · 14861 days ago · 2 km deep · 6 km away
35. 1.76 km WSW of Cobb, CaliforniaWed, Jan 15, 4:26 PM PST · 14860 days ago · 3 km deep · 3 km away
36. 2.39 km SW of Hopland, CaliforniaWed, Jan 15, 4:37 PM PST · 14860 days ago · -1 km deep · 35 km away
37. 2.99 km SW of Hopland, CaliforniaWed, Jan 15, 4:38 PM PST · 14860 days ago · -1 km deep · 35 km away
38. 1.79 km W of Cobb, CaliforniaThu, Jan 16, 12:37 AM PST · 14860 days ago · 1 km deep · 3 km away
39. 2.97 km E of Santa Rosa, CaliforniaThu, Jan 16, 1:38 AM PST · 14860 days ago · 5 km deep · 47 km away
40. 2.34 km WSW of Cobb, CaliforniaThu, Jan 16, 1:52 AM PST · 14860 days ago · 1 km deep · 5 km away
41. 1.810 km NW of Moskowite Corner, CaliforniaThu, Jan 16, 6:46 AM PST · 14860 days ago · 4 km deep · 58 km away
42. 1.76 km SW of Cobb, CaliforniaThu, Jan 16, 8:00 AM PST · 14860 days ago · 0 km deep · 6 km away
43. 1.97 km E of Santa Rosa, CaliforniaThu, Jan 16, 5:59 PM PST · 14859 days ago · 5 km deep · 47 km away
44. 2.98 km WSW of Cobb, CaliforniaThu, Jan 16, 6:36 PM PST · 14859 days ago · 4 km deep · 4 km away
45. 3.110 km SSE of Green Valley, CaliforniaThu, Jan 16, 7:25 PM PST · 14859 days ago · 3 km deep · 95 km away
46. 1.86 km NW of Philo, CaliforniaThu, Jan 16, 7:59 PM PST · 14859 days ago · 4 km deep · 67 km away
47. 2.06 km W of Cobb, CaliforniaThu, Jan 16, 9:47 PM PST · 14859 days ago · 3 km deep · 2 km away
48. 1.58 km W of Cobb, CaliforniaFri, Jan 17, 7:40 AM PST · 14859 days ago · -1 km deep · 1 km away
49. 2.26 km SW of Cobb, CaliforniaFri, Jan 17, 11:40 AM PST · 14858 days ago · 1 km deep · 6 km away
50. 2.75 km SW of Cobb, CaliforniaFri, Jan 17, 12:27 PM PST · 14858 days ago · 1 km deep · 6 km away
51. 1.95 km SW of Cobb, CaliforniaFri, Jan 17, 1:53 PM PST · 14858 days ago · 0 km deep · 6 km away
52. 1.65 km W of Cobb, CaliforniaFri, Jan 17, 9:59 PM PST · 14858 days ago · 0 km deep · 2 km away
53. 1.74 km SW of Cobb, CaliforniaSat, Jan 18, 4:03 AM PST · 14858 days ago · 0 km deep · 7 km away
54. 1.620 km N of Potter Valley, CaliforniaSat, Jan 18, 10:08 AM PST · 14857 days ago · 6 km deep · 80 km away
55. 1.95 km SW of Cobb, CaliforniaSat, Jan 18, 11:08 AM PST · 14857 days ago · -1 km deep · 5 km away
56. 2.17 km W of Cobb, CaliforniaSun, Jan 19, 2:57 PM PST · 14856 days ago · 0 km deep · 0 km away
57. 2.99 km W of Anchor Bay, CaliforniaMon, Jan 20, 1:58 PM PST · 14855 days ago · 4 km deep · 76 km away
58. 2.06 km WSW of Cobb, CaliforniaMon, Jan 20, 3:56 PM PST · 14855 days ago · 1 km deep · 3 km away
59. 2.46 km W of Cobb, CaliforniaMon, Jan 20, 6:17 PM PST · 14855 days ago · 3 km deep · 1 km away
60. 2.37 km W of Cobb, CaliforniaMon, Jan 20, 10:42 PM PST · 14855 days ago · 3 km deep · 2 km away

The first 60 of 175.

From the USGS Earthquake Hazards Program and its partner networks, event nc63642. Read Wed, Sep 23, 2026, 3:35 AM UTC.