M1.6 earthquake 8 km WSW of Cobb, California

Magnitude

1.6 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Fri, Jun 29, 1984, 8:24 AM PDT

UTC

1984-06-29 15:24:37 UTC

Depth

3.2 km (2.0 mi), shallow

Epicenter

38.798° N, 122.811° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.4 km horizontally, 0.7 km in depth

Magnitude uncertainty

±0.10

Depth from

From location

Station coverage gap

113°

Stations used

9

• Cobb, CaliforniaPopulation 1,778. Forecast8 kmWSW
• Healdsburg, CaliforniaPopulation 11,742. Forecast21 kmNNE
• Santa Rosa, CaliforniaPopulation 178,127. Forecast41 kmNNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast667 kmNW

After

1. 2.18 km WSW of Cobb, CaliforniaFri, Jun 29, 2:59 PM PDT · 15438 days ago · 3 km deep · 0 km away
2. 2.0Northern CaliforniaFri, Jun 29, 10:19 PM PDT · 15437 days ago · 0 km deep · 2 km away
3. 1.717 km NE of Upper Lake, CaliforniaSat, Jun 30, 12:22 AM PDT · 15437 days ago · 4 km deep · 54 km away
4. 1.97 km NE of Rohnert Park, CaliforniaSat, Jun 30, 2:27 AM PDT · 15437 days ago · 0 km deep · 49 km away
5. 1.97 km W of Cobb, CaliforniaSat, Jun 30, 7:31 PM PDT · 15436 days ago · 3 km deep · 2 km away
6. 1.64 km W of Healdsburg, CaliforniaSun, Jul 1, 5:46 AM PDT · 15436 days ago · 3 km deep · 24 km away
7. 1.58 km NW of Cobb, CaliforniaSun, Jul 1, 5:13 PM PDT · 15436 days ago · 2 km deep · 8 km away
8. 1.56 km W of Cobb, CaliforniaSun, Jul 1, 7:24 PM PDT · 15435 days ago · 1 km deep · 3 km away
9. 1.95 km W of Cobb, CaliforniaSun, Jul 1, 9:53 PM PDT · 15435 days ago · 3 km deep · 3 km away
10. 1.96 km W of Cobb, CaliforniaMon, Jul 2, 1:24 PM PDT · 15435 days ago · 3 km deep · 3 km away
11. 1.59 km SE of Willits, CaliforniaMon, Jul 2, 3:37 PM PDT · 15435 days ago · 5 km deep · 74 km away
12. 1.512 km NE of Upper Lake, CaliforniaMon, Jul 2, 7:18 PM PDT · 15434 days ago · 6 km deep · 48 km away
13. 1.94 km ENE of Lower Lake, CaliforniaTue, Jul 3, 1:44 AM PDT · 15434 days ago · -1 km deep · 26 km away
14. 2.29 km ENE of Lower Lake, CaliforniaTue, Jul 3, 1:44 AM PDT · 15434 days ago · 1 km deep · 31 km away
15. 2.05 km E of Lower Lake, CaliforniaTue, Jul 3, 1:49 AM PDT · 15434 days ago · -1 km deep · 26 km away
16. 1.94 km N of Clearlake, CaliforniaTue, Jul 3, 2:26 AM PDT · 15434 days ago · 18 km deep · 28 km away
17. 1.67 km E of Lower Lake, CaliforniaTue, Jul 3, 6:34 AM PDT · 15434 days ago · 2 km deep · 28 km away
18. 1.75 km WSW of Cobb, CaliforniaTue, Jul 3, 9:13 AM PDT · 15434 days ago · -1 km deep · 3 km away
19. 1.58 km W of Cobb, CaliforniaTue, Jul 3, 9:22 AM PDT · 15434 days ago · 3 km deep · 1 km away
20. 1.67 km W of Cobb, CaliforniaTue, Jul 3, 1:31 PM PDT · 15434 days ago · 3 km deep · 2 km away
21. 1.67 km W of Cobb, CaliforniaTue, Jul 3, 2:51 PM PDT · 15434 days ago · 2 km deep · 2 km away
22. 1.67 km W of Cobb, CaliforniaTue, Jul 3, 4:00 PM PDT · 15434 days ago · 1 km deep · 3 km away
23. 1.86 km W of Cobb, CaliforniaTue, Jul 3, 10:22 PM PDT · 15433 days ago · 3 km deep · 3 km away
24. 1.520 km ENE of Potter Valley, CaliforniaWed, Jul 4, 11:14 PM PDT · 15432 days ago · 9 km deep · 64 km away
25. 2.07 km SE of Willits, CaliforniaThu, Jul 5, 12:45 AM PDT · 15432 days ago · 8 km deep · 75 km away
26. 1.57 km W of Cobb, CaliforniaThu, Jul 5, 7:51 PM PDT · 15431 days ago · 1 km deep · 2 km away
27. 1.75 km WSW of Cobb, CaliforniaFri, Jul 6, 12:51 PM PDT · 15431 days ago · 1 km deep · 3 km away
28. 1.95 km NW of Deer Park, CaliforniaSat, Jul 7, 2:42 PM PDT · 15430 days ago · 0 km deep · 37 km away
29. 2.15 km SE of Willits, CaliforniaSun, Jul 8, 9:11 PM PDT · 15428 days ago · 5 km deep · 77 km away
30. 2.17 km WSW of Cobb, CaliforniaMon, Jul 9, 5:54 PM PDT · 15427 days ago · 2 km deep · 1 km away
31. 2.07 km W of Cobb, CaliforniaTue, Jul 10, 3:49 PM PDT · 15427 days ago · 3 km deep · 2 km away
32. 1.84 km S of Cobb, CaliforniaWed, Jul 11, 9:53 PM PDT · 15425 days ago · 2 km deep · 8 km away
33. 1.50 km E of Larkfield-Wikiup, CaliforniaWed, Jul 11, 11:54 PM PDT · 15425 days ago · 2 km deep · 32 km away
34. 1.86 km W of Cobb, CaliforniaThu, Jul 12, 8:16 AM PDT · 15425 days ago · 2 km deep · 2 km away
35. 1.66 km W of Cobb, CaliforniaThu, Jul 12, 6:51 PM PDT · 15424 days ago · 0 km deep · 3 km away
36. 1.516 km ENE of Potter Valley, CaliforniaThu, Jul 12, 8:49 PM PDT · 15424 days ago · 11 km deep · 66 km away
37. 2.06 km W of Cobb, CaliforniaThu, Jul 12, 10:11 PM PDT · 15424 days ago · 3 km deep · 3 km away
38. 1.65 km WSW of Cobb, CaliforniaFri, Jul 13, 8:58 AM PDT · 15424 days ago · -1 km deep · 3 km away
39. 1.515 km SE of Hidden Valley Lake, CaliforniaFri, Jul 13, 9:27 AM PDT · 15424 days ago · 8 km deep · 35 km away
40. 1.67 km W of Cobb, CaliforniaFri, Jul 13, 9:56 AM PDT · 15424 days ago · 3 km deep · 2 km away
41. 1.84 km WSW of Calpella, CaliforniaFri, Jul 13, 11:50 AM PDT · 15424 days ago · -1 km deep · 61 km away
42. 1.95 km SW of Cobb, CaliforniaFri, Jul 13, 4:23 PM PDT · 15424 days ago · 0 km deep · 4 km away
43. 1.89 km WSW of Cobb, CaliforniaSat, Jul 14, 3:02 PM PDT · 15423 days ago · 2 km deep · 1 km away
44. 1.77 km W of Cobb, CaliforniaSun, Jul 15, 1:23 AM PDT · 15422 days ago · 1 km deep · 2 km away
45. 1.87 km W of Cobb, CaliforniaSun, Jul 15, 1:24 AM PDT · 15422 days ago · 1 km deep · 3 km away
46. 2.07 km W of Cobb, CaliforniaSun, Jul 15, 8:08 AM PDT · 15422 days ago · 3 km deep · 2 km away
47. 1.75 km WSW of Cobb, CaliforniaSun, Jul 15, 1:09 PM PDT · 15422 days ago · 1 km deep · 3 km away
48. 1.75 km WSW of Cobb, CaliforniaSun, Jul 15, 4:39 PM PDT · 15422 days ago · 0 km deep · 3 km away
49. 1.58 km WSW of Cobb, CaliforniaSun, Jul 15, 5:31 PM PDT · 15421 days ago · 2 km deep · 1 km away
50. 2.08 km WSW of Cobb, CaliforniaSun, Jul 15, 7:02 PM PDT · 15421 days ago · 3 km deep · 0 km away
51. 1.711 km NNE of Angwin, CaliforniaMon, Jul 16, 7:20 AM PDT · 15421 days ago · -1 km deep · 37 km away
52. 1.912 km N of Angwin, CaliforniaMon, Jul 16, 8:27 AM PDT · 15421 days ago · 2 km deep · 33 km away
53. 1.68 km WSW of Cobb, CaliforniaMon, Jul 16, 6:09 PM PDT · 15420 days ago · 0 km deep · 1 km away
54. 2.07 km W of Cobb, CaliforniaMon, Jul 16, 10:49 PM PDT · 15420 days ago · 1 km deep · 2 km away
55. 1.53 km SSE of Hopland, CaliforniaTue, Jul 17, 1:47 AM PDT · 15420 days ago · 1 km deep · 30 km away
56. 2.04 km NE of Willits, CaliforniaTue, Jul 17, 9:20 AM PDT · 15420 days ago · 3 km deep · 83 km away
57. 1.94 km WSW of Cobb, CaliforniaTue, Jul 17, 5:14 PM PDT · 15419 days ago · 1 km deep · 4 km away
58. 1.89 km SSW of Calistoga, CaliforniaWed, Jul 18, 2:01 AM PDT · 15419 days ago · 5 km deep · 37 km away
59. 2.18 km SSW of Lakeport, CaliforniaWed, Jul 18, 3:12 AM PDT · 15419 days ago · 4 km deep · 22 km away
60. 2.70 km WSW of Lakeport, CaliforniaWed, Jul 18, 6:33 AM PDT · 15419 days ago · 21 km deep · 29 km away

The first 60 of 169.

Before

1. 2.78 km ENE of Willits, CaliforniaWed, Jun 27, 9:31 PM PDT · 15439 days ago · 3 km deep · 80 km away
2. 2.47 km ENE of Willits, CaliforniaWed, Jun 27, 9:29 PM PDT · 15439 days ago · 3 km deep · 80 km away
3. 2.017 km NE of Upper Lake, CaliforniaWed, Jun 27, 4:13 AM PDT · 15440 days ago · 6 km deep · 55 km away
4. 2.16 km WSW of Cobb, CaliforniaWed, Jun 27, 12:19 AM PDT · 15440 days ago · 0 km deep · 2 km away
5. 1.58 km WSW of Cobb, CaliforniaMon, Jun 25, 5:41 PM PDT · 15441 days ago · 3 km deep · 0 km away
6. 1.86 km WSW of Cobb, CaliforniaMon, Jun 25, 9:59 AM PDT · 15442 days ago · 3 km deep · 2 km away
7. 2.05 km SW of Cobb, CaliforniaMon, Jun 25, 9:02 AM PDT · 15442 days ago · 1 km deep · 3 km away
8. 1.78 km WSW of Cobb, CaliforniaSun, Jun 24, 10:39 PM PDT · 15442 days ago · 0 km deep · 0 km away
9. 1.67 km W of Cobb, CaliforniaSun, Jun 24, 8:15 AM PDT · 15443 days ago · 3 km deep · 2 km away
10. 2.113 km NNE of Upper Lake, CaliforniaSun, Jun 24, 5:18 AM PDT · 15443 days ago · 4 km deep · 54 km away
11. 1.52 km SE of Hopland, CaliforniaSat, Jun 23, 6:37 AM PDT · 15444 days ago · 4 km deep · 30 km away
12. 2.15 km SW of Cobb, CaliforniaSat, Jun 23, 2:42 AM PDT · 15444 days ago · 2 km deep · 3 km away
13. 2.710 km NNE of Hopland, CaliforniaThu, Jun 21, 5:47 PM PDT · 15445 days ago · 4 km deep · 36 km away
14. 1.94 km NNW of Clearlake, CaliforniaThu, Jun 21, 3:00 PM PDT · 15446 days ago · -1 km deep · 26 km away
15. 1.67 km WSW of Cobb, CaliforniaWed, Jun 20, 10:35 PM PDT · 15446 days ago · 2 km deep · 1 km away
16. 2.58 km WSW of Cobb, CaliforniaWed, Jun 20, 6:44 PM PDT · 15446 days ago · 2 km deep · 1 km away
17. 1.77 km W of Cobb, CaliforniaWed, Jun 20, 2:45 PM PDT · 15447 days ago · 1 km deep · 4 km away
18. 1.98 km WSW of Napa, CaliforniaWed, Jun 20, 1:14 AM PDT · 15447 days ago · 7 km deep · 71 km away
19. 1.74 km WSW of Cobb, CaliforniaTue, Jun 19, 7:25 PM PDT · 15447 days ago · 1 km deep · 4 km away
20. 1.57 km W of Cobb, CaliforniaTue, Jun 19, 5:34 AM PDT · 15448 days ago · 3 km deep · 1 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc21783. Read Mon, Oct 5, 2026, 11:43 AM UTC.