M3.0 earthquake 6 km WSW of Cobb, California

Magnitude

3.0 (md), minor

Local time

Thu, Mar 17, 1983, 9:10 PM PST

UTC

1983-03-18 05:10:21 UTC

Depth

3.3 km (2.0 mi), shallow

Epicenter

38.806° N, 122.797° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.1 km horizontally, 0.3 km in depth

Magnitude uncertainty

±0.14

Depth from

From location

Station coverage gap

36°

Stations used

42

• Cobb, CaliforniaPopulation 1,778. Forecast7 kmWSW
• Clearlake, CaliforniaPopulation 15,182. Forecast22 kmSW
• Santa Rosa, CaliforniaPopulation 178,127. Forecast41 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast667 kmNW

After

1. 1.66 km WSW of Cobb, CaliforniaThu, Mar 17, 9:18 PM PST · 15895 days ago · 3 km deep · 0 km away
2. 2.17 km WSW of Cobb, CaliforniaFri, Mar 18, 1:03 AM PST · 15895 days ago · 1 km deep · 1 km away
3. 2.23 km N of Redwood Valley, CaliforniaFri, Mar 18, 3:32 AM PST · 15895 days ago · 6 km deep · 65 km away
4. 2.57 km WSW of Cobb, CaliforniaFri, Mar 18, 4:27 AM PST · 15895 days ago · 1 km deep · 1 km away
5. 1.66 km WSW of Cobb, CaliforniaFri, Mar 18, 6:57 AM PST · 15894 days ago · 3 km deep · 0 km away
6. 1.911 km N of Brooktrails, CaliforniaFri, Mar 18, 11:00 AM PST · 15894 days ago · 10 km deep · 97 km away
7. 1.87 km WSW of Cobb, CaliforniaFri, Mar 18, 12:33 PM PST · 15894 days ago · 1 km deep · 1 km away
8. 1.77 km NNE of Nice, CaliforniaFri, Mar 18, 9:35 PM PST · 15894 days ago · 19 km deep · 42 km away
9. 2.319 km ENE of Potter Valley, CaliforniaSat, Mar 19, 3:23 AM PST · 15894 days ago · 12 km deep · 66 km away
10. 1.76 km W of Cobb, CaliforniaSat, Mar 19, 2:42 PM PST · 15893 days ago · 0 km deep · 1 km away
11. 1.82 km WSW of Glen Ellen, CaliforniaSat, Mar 19, 4:31 PM PST · 15893 days ago · 12 km deep · 55 km away
12. 2.424 km NE of Potter Valley, CaliforniaSat, Mar 19, 9:05 PM PST · 15893 days ago · 10 km deep · 78 km away
13. 1.55 km SSW of Kelseyville, CaliforniaSat, Mar 19, 11:34 PM PST · 15893 days ago · -1 km deep · 14 km away
14. 1.66 km W of Cobb, CaliforniaTue, Mar 22, 2:13 AM PST · 15891 days ago · 1 km deep · 1 km away
15. 2.816 km NE of Upper Lake, CaliforniaTue, Mar 22, 6:49 PM PST · 15890 days ago · 5 km deep · 52 km away
16. 2.024 km NE of Potter Valley, CaliforniaTue, Mar 22, 8:00 PM PST · 15890 days ago · 11 km deep · 78 km away
17. 2.69 km WSW of Cobb, CaliforniaWed, Mar 23, 12:34 AM PST · 15890 days ago · 2 km deep · 2 km away
18. 2.58 km WSW of Cobb, CaliforniaWed, Mar 23, 1:12 AM PST · 15890 days ago · 1 km deep · 2 km away
19. 2.16 km W of Cobb, CaliforniaWed, Mar 23, 8:03 PM PST · 15889 days ago · 3 km deep · 2 km away
20. 3.06 km WSW of Cobb, CaliforniaWed, Mar 23, 11:20 PM PST · 15889 days ago · 3 km deep · 0 km away
21. 2.0Northern CaliforniaThu, Mar 24, 1:41 PM PST · 15888 days ago · 2 km deep · 1 km away
22. 1.79 km E of Hidden Valley Lake, CaliforniaFri, Mar 25, 1:07 AM PST · 15888 days ago · 1 km deep · 30 km away
23. 1.75 km E of Calpella, CaliforniaFri, Mar 25, 11:47 AM PST · 15887 days ago · 2 km deep · 56 km away
24. 1.56 km W of Cobb, CaliforniaFri, Mar 25, 4:55 PM PST · 15887 days ago · 1 km deep · 1 km away
25. 1.66 km WSW of Cobb, CaliforniaSun, Mar 27, 12:02 AM PST · 15886 days ago · 1 km deep · 1 km away
26. 2.18 km WSW of Cobb, CaliforniaSun, Mar 27, 2:16 AM PST · 15886 days ago · 7 km deep · 2 km away
27. 1.67 km WSW of Cobb, CaliforniaSun, Mar 27, 4:11 AM PST · 15886 days ago · 2 km deep · 1 km away
28. 2.07 km W of Cobb, CaliforniaSun, Mar 27, 4:26 AM PST · 15886 days ago · 3 km deep · 2 km away
29. 1.57 km W of Cobb, CaliforniaSun, Mar 27, 8:19 AM PST · 15885 days ago · 3 km deep · 1 km away
30. 2.42 km SSE of Comptche, CaliforniaSun, Mar 27, 7:27 PM PST · 15885 days ago · 10 km deep · 84 km away
31. 1.67 km WSW of Cobb, CaliforniaMon, Mar 28, 1:04 PM PST · 15884 days ago · 1 km deep · 1 km away
32. 2.13 km N of Healdsburg, CaliforniaMon, Mar 28, 1:09 PM PST · 15884 days ago · 1 km deep · 19 km away
33. 2.68 km ESE of Yountville, CaliforniaTue, Mar 29, 12:51 AM PST · 15884 days ago · 17 km deep · 66 km away
34. 1.819 km SW of Cloverdale, CaliforniaTue, Mar 29, 2:27 AM PST · 15884 days ago · -1 km deep · 36 km away
35. 2.110 km N of Benicia, CaliforniaFri, Apr 1, 11:31 AM PST · 15880 days ago · 12 km deep · 93 km away
36. 1.97 km W of Cobb, CaliforniaSat, Apr 2, 1:40 PM PST · 15879 days ago · 3 km deep · 1 km away
37. 1.66 km W of Cobb, CaliforniaSun, Apr 3, 3:13 AM PST · 15879 days ago · 1 km deep · 1 km away
38. 1.57 km W of Cobb, CaliforniaSun, Apr 3, 10:38 AM PST · 15878 days ago · -1 km deep · 1 km away
39. 1.92 km ESE of Geyserville, CaliforniaSun, Apr 3, 9:43 PM PST · 15878 days ago · 6 km deep · 14 km away
40. 2.97 km NW of Redwood Valley, CaliforniaMon, Apr 4, 3:26 AM PST · 15878 days ago · 0 km deep · 69 km away
41. 2.47 km W of Cobb, CaliforniaMon, Apr 4, 3:40 AM PST · 15878 days ago · 3 km deep · 1 km away
42. 1.87 km WSW of Cobb, CaliforniaMon, Apr 4, 9:41 AM PST · 15877 days ago · 2 km deep · 1 km away
43. 1.96 km W of Cobb, CaliforniaMon, Apr 4, 10:51 AM PST · 15877 days ago · 1 km deep · 1 km away
44. 1.59 km WSW of Cobb, CaliforniaMon, Apr 4, 2:49 PM PST · 15877 days ago · 3 km deep · 2 km away
45. 1.64 km W of Cobb, CaliforniaTue, Apr 5, 2:59 PM PST · 15876 days ago · 0 km deep · 2 km away
46. 1.77 km W of Cobb, CaliforniaWed, Apr 6, 5:22 AM PST · 15876 days ago · 3 km deep · 1 km away
47. 1.57 km W of Cobb, CaliforniaWed, Apr 6, 7:51 AM PST · 15875 days ago · 3 km deep · 2 km away
48. 1.86 km W of Cobb, CaliforniaWed, Apr 6, 12:39 PM PST · 15875 days ago · 3 km deep · 2 km away
49. 2.31 km ESE of Geyserville, CaliforniaWed, Apr 6, 1:15 PM PST · 15875 days ago · 5 km deep · 14 km away
50. 2.26 km NE of Black Point-Green Point, CaliforniaWed, Apr 6, 2:24 PM PST · 15875 days ago · 2 km deep · 78 km away
51. 1.77 km W of Cobb, CaliforniaWed, Apr 6, 6:20 PM PST · 15875 days ago · 1 km deep · 3 km away
52. 2.05 km SW of Cobb, CaliforniaWed, Apr 6, 11:20 PM PST · 15875 days ago · 0 km deep · 3 km away
53. 3.63 km E of Talmage, CaliforniaWed, Apr 6, 11:35 PM PST · 15875 days ago · 7 km deep · 47 km away
54. 1.92 km ENE of Talmage, CaliforniaThu, Apr 7, 12:10 AM PST · 15875 days ago · 4 km deep · 48 km away
55. 1.66 km W of Cobb, CaliforniaThu, Apr 7, 12:52 AM PST · 15875 days ago · 3 km deep · 1 km away
56. 2.427 km N of Potter Valley, CaliforniaThu, Apr 7, 4:16 PM PST · 15874 days ago · 3 km deep · 88 km away
57. 2.56 km W of Cobb, CaliforniaFri, Apr 8, 6:42 AM PST · 15873 days ago · 3 km deep · 1 km away
58. 2.25 km W of Cobb, CaliforniaSat, Apr 9, 9:06 PM PST · 15872 days ago · -1 km deep · 2 km away
59. 2.16 km W of Cobb, CaliforniaSun, Apr 10, 12:14 PM PST · 15871 days ago · 3 km deep · 2 km away
60. 1.68 km WSW of Cobb, CaliforniaSun, Apr 10, 11:41 PM PST · 15871 days ago · 3 km deep · 1 km away

The first 60 of 140.

Before

1. 1.68 km WSW of Cobb, CaliforniaThu, Mar 17, 7:44 AM PST · 15895 days ago · 3 km deep · 2 km away
2. 2.16 km W of Cobb, CaliforniaWed, Mar 16, 8:25 PM PST · 15896 days ago · 3 km deep · 2 km away
3. 1.818 km ENE of Potter Valley, CaliforniaWed, Mar 16, 4:28 PM PST · 15896 days ago · 11 km deep · 67 km away
4. 1.713 km SE of Hidden Valley Lake, CaliforniaWed, Mar 16, 6:34 AM PST · 15896 days ago · 4 km deep · 32 km away
5. 1.72 km SSE of Talmage, CaliforniaWed, Mar 16, 3:41 AM PST · 15897 days ago · -1 km deep · 46 km away
6. 2.08 km WSW of Cobb, CaliforniaTue, Mar 15, 5:51 AM PST · 15897 days ago · 3 km deep · 2 km away
7. 1.93 km E of Geyserville, CaliforniaMon, Mar 14, 2:22 PM PST · 15898 days ago · 5 km deep · 13 km away
8. 2.87 km WSW of Cobb, CaliforniaMon, Mar 14, 12:07 PM PST · 15898 days ago · 0 km deep · 1 km away
9. 1.714 km NNE of Moskowite Corner, CaliforniaSun, Mar 13, 6:53 PM PST · 15899 days ago · 17 km deep · 63 km away
10. 2.024 km SSE of Covelo, CaliforniaSun, Mar 13, 2:38 AM PST · 15900 days ago · 6 km deep · 92 km away
11. 1.67 km SE of Willits, CaliforniaSun, Mar 13, 2:30 AM PST · 15900 days ago · 2 km deep · 75 km away
12. 2.07 km W of Cobb, CaliforniaSun, Mar 13, 12:32 AM PST · 15900 days ago · 3 km deep · 1 km away
13. 2.56 km WSW of Cobb, CaliforniaSat, Mar 12, 7:32 PM PST · 15900 days ago · 3 km deep · 0 km away
14. 1.79 km NE of Hidden Valley Lake, CaliforniaSat, Mar 12, 5:35 PM PST · 15900 days ago · 4 km deep · 28 km away
15. 1.87 km WSW of Cobb, CaliforniaSat, Mar 12, 5:17 PM PST · 15900 days ago · 1 km deep · 0 km away
16. 3.06 km W of Cobb, CaliforniaSat, Mar 12, 9:15 AM PST · 15900 days ago · 3 km deep · 2 km away
17. 1.77 km NE of Clearlake, CaliforniaFri, Mar 11, 6:21 PM PST · 15901 days ago · -1 km deep · 30 km away
18. 1.66 km W of Cobb, CaliforniaFri, Mar 11, 12:55 PM PST · 15901 days ago · 4 km deep · 1 km away
19. 1.86 km W of Cobb, CaliforniaFri, Mar 11, 11:37 AM PST · 15901 days ago · 1 km deep · 1 km away
20. 1.96 km W of Cobb, CaliforniaFri, Mar 11, 7:25 AM PST · 15901 days ago · 3 km deep · 2 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1089286. Read Wed, Sep 23, 2026, 12:56 AM UTC.