M2.3 earthquake 4 km ESE of Comptche, California

Magnitude

2.3 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Fri, Jul 4, 1980, 3:57 PM PDT

UTC

1980-07-04 22:57:28 UTC

Depth

5.9 km (3.6 mi), shallow

Epicenter

39.242° N, 123.542° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.6 km horizontally, 1.3 km in depth

Magnitude uncertainty

±0.20

Depth from

From location

Station coverage gap

186°, poorly surrounded by stations

Stations used

15

• Mendocino, CaliforniaPopulation 894. Forecast23 kmESE
• Ukiah, CaliforniaPopulation 15,917. Forecast31 kmWNW
• Santa Rosa, CaliforniaPopulation 178,127. Forecast114 kmNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast746 kmNW

After

1. 2.06 km WSW of Cobb, CaliforniaSat, Jul 5, 4:41 AM PDT · 16891 days ago · 1 km deep · 81 km away
2. 2.1Northern CaliforniaSat, Jul 5, 8:46 AM PDT · 16891 days ago · 9 km deep · 58 km away
3. 1.920 km ENE of Potter Valley, CaliforniaSun, Jul 6, 3:38 AM PDT · 16890 days ago · 7 km deep · 58 km away
4. 2.220 km ENE of Potter Valley, CaliforniaMon, Jul 7, 2:27 AM PDT · 16889 days ago · 8 km deep · 58 km away
5. 1.96 km W of Cobb, CaliforniaTue, Jul 8, 10:34 AM PDT · 16888 days ago · 2 km deep · 80 km away
6. 1.67 km W of Cobb, CaliforniaTue, Jul 8, 3:05 PM PDT · 16888 days ago · 0 km deep · 79 km away
7. 1.76 km WSW of Cobb, CaliforniaWed, Jul 9, 2:38 AM PDT · 16887 days ago · 1 km deep · 81 km away
8. 1.89 km WSW of Cobb, CaliforniaWed, Jul 9, 9:34 AM PDT · 16887 days ago · 1 km deep · 79 km away
9. 1.56 km W of Cobb, CaliforniaThu, Jul 10, 3:23 AM PDT · 16886 days ago · 4 km deep · 80 km away
10. 1.724 km NE of Potter Valley, CaliforniaThu, Jul 10, 6:32 AM PDT · 16886 days ago · 10 km deep · 59 km away
11. 1.66 km WNW of Cobb, CaliforniaFri, Jul 11, 12:12 PM PDT · 16885 days ago · 2 km deep · 79 km away
12. 2.16 km W of Cobb, CaliforniaSat, Jul 12, 12:35 AM PDT · 16884 days ago · 3 km deep · 79 km away
13. 2.08 km NNE of Upper Lake, CaliforniaMon, Jul 14, 12:47 AM PDT · 16882 days ago · 6 km deep · 57 km away
14. 1.619 km N of Upper Lake, CaliforniaMon, Jul 14, 8:14 AM PDT · 16882 days ago · 3 km deep · 58 km away
15. 2.09 km W of Cobb, CaliforniaTue, Jul 15, 9:01 PM PDT · 16881 days ago · 0 km deep · 77 km away
16. 2.09 km W of Cobb, CaliforniaTue, Jul 15, 11:35 PM PDT · 16881 days ago · 1 km deep · 77 km away
17. 1.78 km W of Cobb, CaliforniaThu, Jul 17, 12:34 PM PDT · 16879 days ago · -1 km deep · 79 km away
18. 3.09 km WSW of Cobb, CaliforniaThu, Jul 17, 1:20 PM PDT · 16879 days ago · 2 km deep · 79 km away
19. 1.914 km SE of Laytonville, CaliforniaThu, Jul 17, 11:40 PM PDT · 16879 days ago · 9 km deep · 45 km away
20. 1.619 km ENE of Potter Valley, CaliforniaFri, Jul 18, 4:48 PM PDT · 16878 days ago · 12 km deep · 57 km away
21. 1.716 km ENE of Potter Valley, CaliforniaSat, Jul 19, 4:17 AM PDT · 16877 days ago · 4 km deep · 54 km away
22. 1.53 km SSW of Clearlake, CaliforniaSat, Jul 19, 5:14 AM PDT · 16877 days ago · 2 km deep · 85 km away
23. 1.83 km SSW of Clearlake, CaliforniaSat, Jul 19, 6:22 AM PDT · 16877 days ago · 1 km deep · 85 km away
24. 1.67 km E of Hopland, CaliforniaMon, Jul 21, 3:08 AM PDT · 16875 days ago · 5 km deep · 53 km away
25. 2.220 km ENE of Potter Valley, CaliforniaMon, Jul 21, 5:39 AM PDT · 16875 days ago · 5 km deep · 58 km away
26. 2.39 km W of Cobb, CaliforniaMon, Jul 21, 6:56 PM PDT · 16875 days ago · 1 km deep · 79 km away
27. 2.116 km E of Potter Valley, CaliforniaMon, Jul 21, 10:18 PM PDT · 16875 days ago · 4 km deep · 55 km away
28. 2.016 km SSW of Laytonville, CaliforniaTue, Jul 22, 12:17 AM PDT · 16874 days ago · 2 km deep · 34 km away
29. 1.717 km ENE of Potter Valley, CaliforniaWed, Jul 23, 5:22 AM PDT · 16873 days ago · 0 km deep · 55 km away
30. 1.59 km WSW of Cobb, CaliforniaWed, Jul 23, 9:23 AM PDT · 16873 days ago · 1 km deep · 79 km away
31. 2.16 km W of Cobb, CaliforniaThu, Jul 24, 12:01 AM PDT · 16872 days ago · 3 km deep · 79 km away
32. 3.06 km W of Cobb, CaliforniaThu, Jul 24, 6:18 AM PDT · 16872 days ago · 1 km deep · 80 km away
33. 1.88 km W of Cobb, CaliforniaThu, Jul 24, 6:19 AM PDT · 16872 days ago · 1 km deep · 78 km away
34. 1.76 km W of Cobb, CaliforniaThu, Jul 24, 6:19 AM PDT · 16872 days ago · 1 km deep · 80 km away
35. 1.55 km E of Hopland, CaliforniaFri, Jul 25, 9:37 AM PDT · 16871 days ago · 5 km deep · 52 km away
36. 2.34 km NW of Redwood Valley, CaliforniaSat, Jul 26, 10:28 PM PDT · 16870 days ago · 4 km deep · 27 km away
37. 2.04 km NNW of Redwood Valley, CaliforniaSat, Jul 26, 10:29 PM PDT · 16870 days ago · 4 km deep · 27 km away
38. 1.89 km W of Cobb, CaliforniaSun, Jul 27, 11:47 PM PDT · 16869 days ago · 2 km deep · 77 km away
39. 1.78 km WSW of Cobb, CaliforniaMon, Jul 28, 6:40 PM PDT · 16868 days ago · 1 km deep · 79 km away
40. 2.18 km ENE of Brooktrails, CaliforniaTue, Jul 29, 11:40 PM PDT · 16867 days ago · 8 km deep · 34 km away
41. 2.119 km NNE of Upper Lake, CaliforniaWed, Jul 30, 9:13 PM PDT · 16866 days ago · 3 km deep · 61 km away
42. 2.06 km W of Cobb, CaliforniaThu, Jul 31, 3:53 AM PDT · 16865 days ago · 4 km deep · 80 km away
43. 1.71 km NE of Hopland, CaliforniaThu, Jul 31, 11:30 AM PDT · 16865 days ago · 3 km deep · 48 km away
44. 2.99 km SE of Talmage, CaliforniaFri, Aug 1, 8:20 AM PDT · 16864 days ago · 1 km deep · 43 km away
45. 1.724 km N of Potter Valley, CaliforniaFri, Aug 1, 8:32 AM PDT · 16864 days ago · 24 km deep · 50 km away
46. 2.09 km SE of Talmage, CaliforniaFri, Aug 1, 8:43 AM PDT · 16864 days ago · 0 km deep · 43 km away
47. 1.89 km SE of Talmage, CaliforniaFri, Aug 1, 10:12 AM PDT · 16864 days ago · 2 km deep · 43 km away
48. 2.01 km ENE of Nice, CaliforniaFri, Aug 1, 10:34 AM PDT · 16864 days ago · 6 km deep · 63 km away
49. 1.723 km ENE of Potter Valley, CaliforniaSat, Aug 2, 5:29 PM PDT · 16863 days ago · 14 km deep · 61 km away
50. 2.714 km SSE of Laytonville, CaliforniaSun, Aug 3, 1:40 AM PDT · 16862 days ago · 9 km deep · 39 km away
51. 1.89 km SSE of Willits, CaliforniaMon, Aug 4, 5:39 PM PDT · 16861 days ago · 6 km deep · 23 km away
52. 1.9near the coast of Northern CaliforniaMon, Aug 4, 11:27 PM PDT · 16861 days ago · 8 km deep · 31 km away
53. 1.66 km W of Cobb, CaliforniaThu, Aug 7, 12:04 AM PDT · 16858 days ago · 3 km deep · 80 km away
54. 1.625 km ENE of Potter Valley, CaliforniaThu, Aug 7, 3:32 PM PDT · 16858 days ago · 11 km deep · 64 km away
55. 1.828 km SE of Covelo, CaliforniaThu, Aug 7, 8:10 PM PDT · 16858 days ago · 16 km deep · 63 km away
56. 2.03 km NNW of Laytonville, CaliforniaFri, Aug 8, 2:29 AM PDT · 16857 days ago · 11 km deep · 53 km away
57. 2.44 km WSW of Cobb, CaliforniaFri, Aug 8, 7:12 AM PDT · 16857 days ago · 2 km deep · 83 km away
58. 2.47 km WSW of Cobb, CaliforniaFri, Aug 8, 7:17 AM PDT · 16857 days ago · 1 km deep · 80 km away
59. 1.67 km WSW of Cobb, CaliforniaFri, Aug 8, 11:33 PM PDT · 16857 days ago · 2 km deep · 80 km away
60. 1.77 km WSW of Cobb, CaliforniaSat, Aug 9, 2:39 AM PDT · 16856 days ago · 2 km deep · 80 km away

The first 60 of 97.

Before

1. 1.620 km ENE of Potter Valley, CaliforniaFri, Jul 4, 2:54 PM PDT · 16892 days ago · 8 km deep · 58 km away
2. 1.719 km ENE of Potter Valley, CaliforniaFri, Jul 4, 11:46 AM PDT · 16892 days ago · 5 km deep · 57 km away
3. 1.719 km ENE of Potter Valley, CaliforniaFri, Jul 4, 9:13 AM PDT · 16892 days ago · 6 km deep · 57 km away
4. 3.020 km ENE of Potter Valley, CaliforniaFri, Jul 4, 9:12 AM PDT · 16892 days ago · 10 km deep · 59 km away
5. 2.019 km ENE of Potter Valley, CaliforniaFri, Jul 4, 7:23 AM PDT · 16892 days ago · 7 km deep · 57 km away
6. 2.118 km ENE of Potter Valley, CaliforniaFri, Jul 4, 7:19 AM PDT · 16892 days ago · 5 km deep · 56 km away
7. 1.67 km W of Cobb, CaliforniaThu, Jul 3, 5:07 PM PDT · 16893 days ago · 1 km deep · 79 km away
8. 1.87 km WSW of Cobb, CaliforniaThu, Jul 3, 2:31 AM PDT · 16893 days ago · 2 km deep · 80 km away
9. 2.08 km NE of Covelo, CaliforniaSun, Jun 29, 8:37 AM PDT · 16897 days ago · 9 km deep · 74 km away
10. 1.510 km SSE of Willits, CaliforniaSat, Jun 28, 4:51 AM PDT · 16898 days ago · 6 km deep · 23 km away
11. 2.47 km WSW of Cobb, CaliforniaFri, Jun 27, 9:07 PM PDT · 16899 days ago · 2 km deep · 80 km away
12. 1.76 km NW of Geyserville, CaliforniaThu, Jun 26, 10:09 PM PDT · 16900 days ago · 4 km deep · 75 km away
13. 1.811 km WSW of Hopland, CaliforniaWed, Jun 25, 7:45 PM PDT · 16901 days ago · 5 km deep · 42 km away
14. 1.56 km W of Cobb, CaliforniaWed, Jun 25, 1:03 AM PDT · 16901 days ago · 1 km deep · 80 km away
15. 1.55 km E of Calpella, CaliforniaTue, Jun 24, 1:46 AM PDT · 16902 days ago · 7 km deep · 34 km away
16. 1.510 km ENE of Cleone, CaliforniaSun, Jun 22, 10:55 PM PDT · 16904 days ago · 0 km deep · 34 km away
17. 1.68 km WNW of Cazadero, CaliforniaFri, Jun 20, 12:36 PM PDT · 16906 days ago · 1 km deep · 83 km away
18. 1.79 km NW of Redwood Valley, CaliforniaThu, Jun 19, 10:54 PM PDT · 16907 days ago · 4 km deep · 24 km away
19. 2.08 km W of Cobb, CaliforniaThu, Jun 19, 9:11 PM PDT · 16907 days ago · 1 km deep · 78 km away
20. 2.78 km W of Cobb, CaliforniaThu, Jun 19, 8:59 PM PDT · 16907 days ago · -1 km deep · 79 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1054227. Read Sat, Oct 3, 2026, 6:30 PM UTC.