M2.0 earthquake 5 km SSW of Cobb, California

Magnitude

2.0 (md), micro

Local time

Wed, Nov 9, 1983, 7:41 AM PST

UTC

1983-11-09 15:41:20 UTC

Depth

-1.0 km (-0.6 mi), shallow

Epicenter

38.778° N, 122.736° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.7 km horizontally, 2.1 km in depth

Magnitude uncertainty

±0.16

Depth from

From location

Station coverage gap

57°

Stations used

17

• Cobb, CaliforniaPopulation 1,778. Forecast5 kmSSW
• Healdsburg, CaliforniaPopulation 11,742. Forecast22 kmNNE
• Santa Rosa, CaliforniaPopulation 178,127. Forecast38 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast661 kmNW

After

1. 1.96 km NNE of Cobb, CaliforniaFri, Nov 11, 9:04 PM PST · 15656 days ago · 2 km deep · 12 km away
2. 2.37 km WSW of Cobb, CaliforniaSat, Nov 12, 8:55 PM PST · 15655 days ago · 3 km deep · 7 km away
3. 1.65 km SW of Cobb, CaliforniaSun, Nov 13, 10:59 AM PST · 15654 days ago · 1 km deep · 2 km away
4. 1.76 km W of Cobb, CaliforniaSun, Nov 13, 11:09 AM PST · 15654 days ago · 3 km deep · 7 km away
5. 2.56 km WSW of Cobb, CaliforniaSun, Nov 13, 2:35 PM PST · 15654 days ago · 0 km deep · 6 km away
6. 1.97 km W of Cobb, CaliforniaSun, Nov 13, 8:41 PM PST · 15654 days ago · 0 km deep · 7 km away
7. 1.69 km WSW of Cobb, CaliforniaMon, Nov 14, 7:00 AM PST · 15653 days ago · 3 km deep · 8 km away
8. 1.85 km SW of Cobb, CaliforniaMon, Nov 14, 5:50 PM PST · 15653 days ago · 0 km deep · 4 km away
9. 2.9Northern CaliforniaMon, Nov 14, 6:10 PM PST · 15653 days ago · 2 km deep · 12 km away
10. 1.86 km WNW of Cobb, CaliforniaMon, Nov 14, 7:46 PM PST · 15653 days ago · 1 km deep · 8 km away
11. 1.81 km NNW of Point Reyes Station, CaliforniaTue, Nov 15, 1:45 PM PST · 15652 days ago · 2 km deep · 78 km away
12. 2.26 km WSW of Cobb, CaliforniaWed, Nov 16, 9:59 AM PST · 15651 days ago · 1 km deep · 5 km away
13. 2.05 km SW of Cobb, CaliforniaWed, Nov 16, 5:31 PM PST · 15651 days ago · 0 km deep · 4 km away
14. 1.73 km E of Lower Lake, CaliforniaFri, Nov 18, 10:53 AM PST · 15649 days ago · 3 km deep · 20 km away
15. 1.916 km ENE of Potter Valley, CaliforniaFri, Nov 18, 3:37 PM PST · 15649 days ago · 7 km deep · 70 km away
16. 1.68 km ESE of Hidden Valley Lake, CaliforniaSat, Nov 19, 2:24 AM PST · 15649 days ago · 8 km deep · 24 km away
17. 1.55 km SW of Cobb, CaliforniaSat, Nov 19, 4:45 AM PST · 15648 days ago · 0 km deep · 3 km away
18. 1.96 km W of Cobb, CaliforniaSat, Nov 19, 4:45 AM PST · 15648 days ago · -1 km deep · 6 km away
19. 1.74 km W of Cobb, CaliforniaSat, Nov 19, 7:26 AM PST · 15648 days ago · 0 km deep · 6 km away
20. 2.15 km SW of Cobb, CaliforniaSat, Nov 19, 9:19 AM PST · 15648 days ago · 0 km deep · 3 km away
21. 1.86 km W of Cobb, CaliforniaSat, Nov 19, 9:55 AM PST · 15648 days ago · 3 km deep · 7 km away
22. 1.57 km WSW of Cobb, CaliforniaSat, Nov 19, 10:17 AM PST · 15648 days ago · 2 km deep · 6 km away
23. 2.319 km NNE of Upper Lake, CaliforniaSun, Nov 20, 1:12 AM PST · 15648 days ago · 7 km deep · 59 km away
24. 1.76 km W of Cobb, CaliforniaSun, Nov 20, 2:28 AM PST · 15648 days ago · 3 km deep · 7 km away
25. 1.67 km WSW of Cobb, CaliforniaSun, Nov 20, 9:31 AM PST · 15647 days ago · 0 km deep · 7 km away
26. 2.36 km W of Cobb, CaliforniaSun, Nov 20, 9:48 AM PST · 15647 days ago · 3 km deep · 7 km away
27. 2.45 km W of Glen Ellen, CaliforniaMon, Nov 21, 8:58 PM PST · 15646 days ago · 6 km deep · 47 km away
28. 1.67 km W of Cobb, CaliforniaTue, Nov 22, 1:21 AM PST · 15646 days ago · 1 km deep · 7 km away
29. 1.84 km ENE of Brooktrails, CaliforniaTue, Nov 22, 5:16 AM PST · 15645 days ago · 9 km deep · 91 km away
30. 1.616 km ENE of Potter Valley, CaliforniaTue, Nov 22, 12:16 PM PST · 15645 days ago · 11 km deep · 70 km away
31. 1.64 km NNW of Cobb, CaliforniaWed, Nov 23, 1:17 AM PST · 15645 days ago · 1 km deep · 8 km away
32. 1.66 km NNE of Cobb, CaliforniaWed, Nov 23, 9:11 AM PST · 15644 days ago · 0 km deep · 12 km away
33. 1.75 km WSW of Cobb, CaliforniaWed, Nov 23, 12:07 PM PST · 15644 days ago · 1 km deep · 5 km away
34. 1.75 km W of Glen Ellen, CaliforniaWed, Nov 23, 4:38 PM PST · 15644 days ago · 4 km deep · 47 km away
35. 1.67 km WSW of Cobb, CaliforniaWed, Nov 23, 6:13 PM PST · 15644 days ago · 2 km deep · 7 km away
36. 2.96 km W of Cobb, CaliforniaThu, Nov 24, 10:39 AM PST · 15643 days ago · 3 km deep · 7 km away
37. 1.77 km W of Cobb, CaliforniaThu, Nov 24, 10:39 PM PST · 15643 days ago · 3 km deep · 7 km away
38. 1.65 km WSW of Cobb, CaliforniaFri, Nov 25, 9:32 AM PST · 15642 days ago · 1 km deep · 5 km away
39. 2.16 km WSW of Cobb, CaliforniaFri, Nov 25, 7:25 PM PST · 15642 days ago · 3 km deep · 6 km away
40. 1.66 km W of Cobb, CaliforniaFri, Nov 25, 7:53 PM PST · 15642 days ago · 1 km deep · 7 km away
41. 2.018 km NE of Upper Lake, CaliforniaFri, Nov 25, 8:42 PM PST · 15642 days ago · 7 km deep · 58 km away
42. 2.57 km WSW of Cobb, CaliforniaSat, Nov 26, 12:43 AM PST · 15642 days ago · 1 km deep · 7 km away
43. 1.78 km W of Cobb, CaliforniaSat, Nov 26, 12:44 AM PST · 15642 days ago · -1 km deep · 8 km away
44. 1.67 km WSW of Cobb, CaliforniaSat, Nov 26, 12:45 AM PST · 15642 days ago · 1 km deep · 7 km away
45. 1.67 km W of Cobb, CaliforniaSat, Nov 26, 5:46 AM PST · 15641 days ago · 1 km deep · 8 km away
46. 2.4Northern CaliforniaSat, Nov 26, 5:47 AM PST · 15641 days ago · 1 km deep · 8 km away
47. 1.78 km W of Cobb, CaliforniaSat, Nov 26, 5:47 AM PST · 15641 days ago · 1 km deep · 8 km away
48. 1.88 km W of Cobb, CaliforniaSat, Nov 26, 5:48 AM PST · 15641 days ago · -1 km deep · 8 km away
49. 3.06 km WSW of Cobb, CaliforniaSat, Nov 26, 11:53 AM PST · 15641 days ago · 3 km deep · 6 km away
50. 2.23 km S of Clear Lake Riviera, CaliforniaSat, Nov 26, 4:52 PM PST · 15641 days ago · 3 km deep · 16 km away
51. 2.66 km W of Cobb, CaliforniaSun, Nov 27, 7:59 AM PST · 15640 days ago · 0 km deep · 7 km away
52. 2.26 km W of Cobb, CaliforniaSun, Nov 27, 8:00 AM PST · 15640 days ago · 1 km deep · 7 km away
53. 1.62 km ESE of North Lakeport, CaliforniaSun, Nov 27, 5:16 PM PST · 15640 days ago · 18 km deep · 36 km away
54. 2.16 km W of Cobb, CaliforniaMon, Nov 28, 4:32 AM PST · 15639 days ago · 3 km deep · 7 km away
55. 2.36 km W of Cobb, CaliforniaMon, Nov 28, 4:36 AM PST · 15639 days ago · 3 km deep · 7 km away
56. 1.67 km W of Cobb, CaliforniaMon, Nov 28, 4:54 AM PST · 15639 days ago · 3 km deep · 7 km away
57. 2.16 km WSW of Cobb, CaliforniaMon, Nov 28, 10:37 AM PST · 15639 days ago · 1 km deep · 6 km away
58. 1.919 km ENE of Potter Valley, CaliforniaMon, Nov 28, 10:43 AM PST · 15639 days ago · 7 km deep · 67 km away
59. 1.51 km NNW of Calpella, CaliforniaMon, Nov 28, 12:02 PM PST · 15639 days ago · 6 km deep · 66 km away
60. 1.67 km W of Cobb, CaliforniaMon, Nov 28, 6:46 PM PST · 15639 days ago · 0 km deep · 8 km away

The first 60 of 180.

From the USGS Earthquake Hazards Program and its partner networks, event nc1106547. Read Tue, Sep 22, 2026, 10:24 PM UTC.