M1.8 earthquake 7 km W of Cobb, California

Magnitude

1.8 (md), micro

Local time

Fri, Nov 11, 1983, 10:09 AM PST

UTC

1983-11-11 18:09:42 UTC

Depth

3.9 km (2.4 mi), shallow

Epicenter

38.818° N, 122.808° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.4 km horizontally, 2.0 km in depth

Magnitude uncertainty

±0.14

Depth from

From location

Station coverage gap

116°

Stations used

7

• Cobb, CaliforniaPopulation 1,778. Forecast7 kmW
• Clearlake, CaliforniaPopulation 15,182. Forecast22 kmSW
• Santa Rosa, CaliforniaPopulation 178,127. Forecast43 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast669 kmNW

After

1. 2.26 km WSW of Cobb, CaliforniaWed, Nov 16, 9:59 AM PST · 15651 days ago · 1 km deep · 3 km away
2. 2.05 km SW of Cobb, CaliforniaWed, Nov 16, 5:31 PM PST · 15650 days ago · 0 km deep · 4 km away
3. 1.73 km E of Lower Lake, CaliforniaFri, Nov 18, 10:53 AM PST · 15649 days ago · 3 km deep · 23 km away
4. 1.916 km ENE of Potter Valley, CaliforniaFri, Nov 18, 3:37 PM PST · 15648 days ago · 7 km deep · 64 km away
5. 1.68 km ESE of Hidden Valley Lake, CaliforniaSat, Nov 19, 2:24 AM PST · 15648 days ago · 8 km deep · 30 km away
6. 1.55 km SW of Cobb, CaliforniaSat, Nov 19, 4:45 AM PST · 15648 days ago · 0 km deep · 5 km away
7. 1.96 km W of Cobb, CaliforniaSat, Nov 19, 4:45 AM PST · 15648 days ago · -1 km deep · 1 km away
8. 1.74 km W of Cobb, CaliforniaSat, Nov 19, 7:26 AM PST · 15648 days ago · 0 km deep · 3 km away
9. 2.15 km SW of Cobb, CaliforniaSat, Nov 19, 9:19 AM PST · 15648 days ago · 0 km deep · 5 km away
10. 1.86 km W of Cobb, CaliforniaSat, Nov 19, 9:55 AM PST · 15648 days ago · 3 km deep · 1 km away
11. 1.57 km WSW of Cobb, CaliforniaSat, Nov 19, 10:17 AM PST · 15648 days ago · 2 km deep · 3 km away
12. 2.319 km NNE of Upper Lake, CaliforniaSun, Nov 20, 1:12 AM PST · 15647 days ago · 7 km deep · 55 km away
13. 1.76 km W of Cobb, CaliforniaSun, Nov 20, 2:28 AM PST · 15647 days ago · 3 km deep · 1 km away
14. 2.415 km SE of Laytonville, CaliforniaSun, Nov 20, 4:44 AM PST · 15647 days ago · 0 km deep · 98 km away
15. 1.67 km WSW of Cobb, CaliforniaSun, Nov 20, 9:31 AM PST · 15647 days ago · 0 km deep · 2 km away
16. 2.36 km W of Cobb, CaliforniaSun, Nov 20, 9:48 AM PST · 15647 days ago · 3 km deep · 0 km away
17. 1.815 km SE of Laytonville, CaliforniaMon, Nov 21, 3:59 AM PST · 15646 days ago · 0 km deep · 99 km away
18. 2.45 km W of Glen Ellen, CaliforniaMon, Nov 21, 8:58 PM PST · 15645 days ago · 6 km deep · 54 km away
19. 1.67 km W of Cobb, CaliforniaTue, Nov 22, 1:21 AM PST · 15645 days ago · 1 km deep · 1 km away
20. 1.84 km ENE of Brooktrails, CaliforniaTue, Nov 22, 5:16 AM PST · 15645 days ago · 9 km deep · 84 km away
21. 1.616 km ENE of Potter Valley, CaliforniaTue, Nov 22, 12:16 PM PST · 15645 days ago · 11 km deep · 64 km away
22. 1.64 km NNW of Cobb, CaliforniaWed, Nov 23, 1:17 AM PST · 15644 days ago · 1 km deep · 6 km away
23. 1.66 km NNE of Cobb, CaliforniaWed, Nov 23, 9:11 AM PST · 15644 days ago · 0 km deep · 12 km away
24. 1.75 km WSW of Cobb, CaliforniaWed, Nov 23, 12:07 PM PST · 15644 days ago · 1 km deep · 3 km away
25. 1.75 km W of Glen Ellen, CaliforniaWed, Nov 23, 4:38 PM PST · 15643 days ago · 4 km deep · 54 km away
26. 1.67 km WSW of Cobb, CaliforniaWed, Nov 23, 6:13 PM PST · 15643 days ago · 2 km deep · 1 km away
27. 2.96 km W of Cobb, CaliforniaThu, Nov 24, 10:39 AM PST · 15643 days ago · 3 km deep · 1 km away
28. 1.77 km W of Cobb, CaliforniaThu, Nov 24, 10:39 PM PST · 15642 days ago · 3 km deep · 1 km away
29. 1.65 km WSW of Cobb, CaliforniaFri, Nov 25, 9:32 AM PST · 15642 days ago · 1 km deep · 3 km away
30. 2.16 km WSW of Cobb, CaliforniaFri, Nov 25, 7:25 PM PST · 15641 days ago · 3 km deep · 2 km away
31. 1.66 km W of Cobb, CaliforniaFri, Nov 25, 7:53 PM PST · 15641 days ago · 1 km deep · 1 km away
32. 2.018 km NE of Upper Lake, CaliforniaFri, Nov 25, 8:42 PM PST · 15641 days ago · 7 km deep · 54 km away
33. 2.57 km WSW of Cobb, CaliforniaSat, Nov 26, 12:43 AM PST · 15641 days ago · 1 km deep · 2 km away
34. 1.78 km W of Cobb, CaliforniaSat, Nov 26, 12:44 AM PST · 15641 days ago · -1 km deep · 2 km away
35. 1.67 km WSW of Cobb, CaliforniaSat, Nov 26, 12:45 AM PST · 15641 days ago · 1 km deep · 1 km away
36. 2.013 km NNE of Brooktrails, CaliforniaSat, Nov 26, 3:51 AM PST · 15641 days ago · 2 km deep · 95 km away
37. 1.67 km W of Cobb, CaliforniaSat, Nov 26, 5:46 AM PST · 15641 days ago · 1 km deep · 1 km away
38. 2.4Northern CaliforniaSat, Nov 26, 5:47 AM PST · 15641 days ago · 1 km deep · 1 km away
39. 1.78 km W of Cobb, CaliforniaSat, Nov 26, 5:47 AM PST · 15641 days ago · 1 km deep · 1 km away
40. 1.88 km W of Cobb, CaliforniaSat, Nov 26, 5:48 AM PST · 15641 days ago · -1 km deep · 1 km away
41. 3.06 km WSW of Cobb, CaliforniaSat, Nov 26, 11:53 AM PST · 15641 days ago · 3 km deep · 2 km away
42. 2.23 km S of Clear Lake Riviera, CaliforniaSat, Nov 26, 4:52 PM PST · 15640 days ago · 3 km deep · 13 km away
43. 2.66 km W of Cobb, CaliforniaSun, Nov 27, 7:59 AM PST · 15640 days ago · 0 km deep · 1 km away
44. 2.26 km W of Cobb, CaliforniaSun, Nov 27, 8:00 AM PST · 15640 days ago · 1 km deep · 1 km away
45. 1.62 km ESE of North Lakeport, CaliforniaSun, Nov 27, 5:16 PM PST · 15639 days ago · 18 km deep · 30 km away
46. 2.16 km W of Cobb, CaliforniaMon, Nov 28, 4:32 AM PST · 15639 days ago · 3 km deep · 1 km away
47. 2.36 km W of Cobb, CaliforniaMon, Nov 28, 4:36 AM PST · 15639 days ago · 3 km deep · 1 km away
48. 1.67 km W of Cobb, CaliforniaMon, Nov 28, 4:54 AM PST · 15639 days ago · 3 km deep · 1 km away
49. 2.16 km WSW of Cobb, CaliforniaMon, Nov 28, 10:37 AM PST · 15639 days ago · 1 km deep · 2 km away
50. 1.919 km ENE of Potter Valley, CaliforniaMon, Nov 28, 10:43 AM PST · 15639 days ago · 7 km deep · 61 km away
51. 1.51 km NNW of Calpella, CaliforniaMon, Nov 28, 12:02 PM PST · 15639 days ago · 6 km deep · 59 km away
52. 1.67 km W of Cobb, CaliforniaMon, Nov 28, 6:46 PM PST · 15638 days ago · 0 km deep · 0 km away
53. 1.612 km NNW of Moskowite Corner, CaliforniaTue, Nov 29, 8:46 PM PST · 15637 days ago · 18 km deep · 59 km away
54. 1.57 km W of Cobb, CaliforniaWed, Nov 30, 4:06 PM PST · 15636 days ago · 3 km deep · 1 km away
55. 2.68 km E of Willits, CaliforniaWed, Nov 30, 4:32 PM PST · 15636 days ago · 4 km deep · 75 km away
56. 1.67 km W of Cobb, CaliforniaWed, Nov 30, 4:51 PM PST · 15636 days ago · 3 km deep · 1 km away
57. 1.63 km ESE of Moskowite Corner, CaliforniaThu, Dec 1, 3:18 AM PST · 15636 days ago · 7 km deep · 71 km away
58. 2.13 km SE of Calpella, CaliforniaThu, Dec 1, 10:56 AM PST · 15636 days ago · 2 km deep · 55 km away
59. 2.12 km SE of Calpella, CaliforniaThu, Dec 1, 4:18 PM PST · 15635 days ago · 5 km deep · 55 km away
60. 1.620 km NE of Potter Valley, CaliforniaFri, Dec 2, 1:33 AM PST · 15635 days ago · 10 km deep · 72 km away

The first 60 of 181.

From the USGS Earthquake Hazards Program and its partner networks, event nc1106652. Read Tue, Sep 22, 2026, 10:58 AM UTC.