M1.6 earthquake 7 km W of Cobb, California

Magnitude

1.6 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Fri, Oct 19, 1984, 10:49 AM PDT

UTC

1984-10-19 17:49:49 UTC

Depth

1.1 km (0.7 mi), shallow

Epicenter

38.828° N, 122.813° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.3 km in depth

Magnitude uncertainty

±0.19

Depth from

From location

Station coverage gap

101°

Stations used

16

• Cobb, CaliforniaPopulation 1,778. Forecast8 kmW
• Clearlake, CaliforniaPopulation 15,182. Forecast22 kmSW
• Santa Rosa, CaliforniaPopulation 178,127. Forecast44 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast670 kmNW

After

1. 1.66 km WSW of Cobb, CaliforniaFri, Oct 19, 12:02 PM PDT · 15326 days ago · 3 km deep · 3 km away
2. 2.55 km S of Lower Lake, CaliforniaFri, Oct 19, 5:04 PM PDT · 15325 days ago · 4 km deep · 17 km away
3. 1.610 km NNE of Cloverdale, CaliforniaFri, Oct 19, 6:49 PM PDT · 15325 days ago · 5 km deep · 17 km away
4. 1.65 km SW of Cobb, CaliforniaFri, Oct 19, 7:17 PM PDT · 15325 days ago · -1 km deep · 6 km away
5. 1.65 km W of Cobb, CaliforniaFri, Oct 19, 10:43 PM PDT · 15325 days ago · 0 km deep · 3 km away
6. 1.64 km WSW of Cobb, CaliforniaSat, Oct 20, 1:02 AM PDT · 15325 days ago · 1 km deep · 5 km away
7. 1.66 km WSW of Cobb, CaliforniaSat, Oct 20, 7:51 AM PDT · 15325 days ago · 3 km deep · 3 km away
8. 2.013 km NNW of Moskowite Corner, CaliforniaSat, Oct 20, 1:35 PM PDT · 15324 days ago · 3 km deep · 57 km away
9. 1.95 km SW of Cobb, CaliforniaSat, Oct 20, 7:51 PM PDT · 15324 days ago · 0 km deep · 5 km away
10. 1.75 km ENE of Santa Rosa, CaliforniaSun, Oct 21, 12:25 PM PDT · 15324 days ago · 10 km deep · 44 km away
11. 2.23 km NNW of Larkfield-Wikiup, CaliforniaTue, Oct 23, 1:54 AM PDT · 15322 days ago · 6 km deep · 32 km away
12. 3.14 km WSW of Sea Ranch, CaliforniaTue, Oct 23, 3:08 AM PDT · 15322 days ago · -1 km deep · 61 km away
13. 1.63 km SW of Cobb, CaliforniaTue, Oct 23, 4:56 AM PDT · 15322 days ago · 1 km deep · 7 km away
14. 1.87 km WNW of Upper Lake, CaliforniaTue, Oct 23, 2:42 PM PDT · 15321 days ago · 4 km deep · 43 km away
15. 1.58 km W of Cobb, CaliforniaTue, Oct 23, 4:25 PM PDT · 15321 days ago · 1 km deep · 1 km away
16. 2.22 km WSW of Forestville, CaliforniaTue, Oct 23, 7:30 PM PDT · 15321 days ago · 0 km deep · 41 km away
17. 2.36 km W of Cobb, CaliforniaWed, Oct 24, 9:12 AM PDT · 15321 days ago · 4 km deep · 1 km away
18. 2.07 km ENE of Winters, CaliforniaWed, Oct 24, 10:03 AM PDT · 15321 days ago · 12 km deep · 85 km away
19. 1.56 km W of Cobb, CaliforniaFri, Oct 26, 2:31 PM PDT · 15318 days ago · 3 km deep · 2 km away
20. 1.96 km N of Kenwood, CaliforniaFri, Oct 26, 9:01 PM PDT · 15318 days ago · 7 km deep · 46 km away
21. 1.99 km NE of Willits, CaliforniaFri, Oct 26, 9:54 PM PDT · 15318 days ago · 10 km deep · 81 km away
22. 1.77 km W of Cobb, CaliforniaSat, Oct 27, 11:49 AM PDT · 15318 days ago · 3 km deep · 1 km away
23. 1.822 km WSW of Williams, CaliforniaSat, Oct 27, 7:59 PM PDT · 15317 days ago · 2 km deep · 46 km away
24. 2.25 km WSW of Cobb, CaliforniaSat, Oct 27, 10:57 PM PDT · 15317 days ago · 0 km deep · 5 km away
25. 1.96 km W of Cobb, CaliforniaSat, Oct 27, 11:42 PM PDT · 15317 days ago · 3 km deep · 2 km away
26. 1.55 km SW of Cobb, CaliforniaSun, Oct 28, 3:48 AM PST · 15317 days ago · 1 km deep · 7 km away
27. 2.05 km SSW of Cobb, CaliforniaSun, Oct 28, 2:01 PM PST · 15316 days ago · 1 km deep · 7 km away
28. 1.85 km SW of Cobb, CaliforniaSun, Oct 28, 10:51 PM PST · 15316 days ago · 4 km deep · 5 km away
29. 1.56 km W of Cobb, CaliforniaMon, Oct 29, 12:16 AM PST · 15316 days ago · 3 km deep · 2 km away
30. 1.81 km ENE of Bodega, CaliforniaMon, Oct 29, 2:01 PM PST · 15315 days ago · 5 km deep · 55 km away
31. 1.64 km SE of Clear Lake Riviera, CaliforniaTue, Oct 30, 5:58 AM PST · 15315 days ago · 2 km deep · 16 km away
32. 2.83 km SE of Larkfield-Wikiup, CaliforniaTue, Oct 30, 12:50 PM PST · 15314 days ago · 6 km deep · 38 km away
33. 3.12 km SE of Larkfield-Wikiup, CaliforniaTue, Oct 30, 3:44 PM PST · 15314 days ago · 6 km deep · 38 km away
34. 1.78 km W of Cobb, CaliforniaTue, Oct 30, 9:59 PM PST · 15314 days ago · 1 km deep · 1 km away
35. 1.63 km SW of Cobb, CaliforniaWed, Oct 31, 12:43 AM PST · 15314 days ago · 1 km deep · 7 km away
36. 2.06 km W of Cobb, CaliforniaThu, Nov 1, 2:34 AM PST · 15313 days ago · 3 km deep · 2 km away
37. 1.57 km NNE of Geyserville, CaliforniaFri, Nov 2, 12:06 PM PST · 15312 days ago · 4 km deep · 9 km away
38. 2.82 km WSW of Sea Ranch, CaliforniaSat, Nov 3, 3:59 AM PST · 15311 days ago · 0 km deep · 59 km away
39. 2.75 km SW of Cobb, CaliforniaSat, Nov 3, 9:33 AM PST · 15311 days ago · 0 km deep · 5 km away
40. 1.75 km SW of Cobb, CaliforniaSat, Nov 3, 5:51 PM PST · 15310 days ago · 0 km deep · 6 km away
41. 1.74 km W of Cobb, CaliforniaSat, Nov 3, 7:31 PM PST · 15310 days ago · -1 km deep · 3 km away
42. 2.05 km ENE of Clearlake, CaliforniaSun, Nov 4, 3:17 AM PST · 15310 days ago · 2 km deep · 27 km away
43. 1.76 km W of Cobb, CaliforniaSun, Nov 4, 8:25 PM PST · 15309 days ago · 3 km deep · 2 km away
44. 1.65 km WSW of Temelec, CaliforniaMon, Nov 5, 3:19 AM PST · 15309 days ago · 2 km deep · 68 km away
45. 1.77 km W of Cobb, CaliforniaMon, Nov 5, 5:27 AM PST · 15309 days ago · 4 km deep · 1 km away
46. 1.919 km NNE of Upper Lake, CaliforniaWed, Nov 7, 11:39 AM PST · 15307 days ago · 6 km deep · 56 km away
47. 1.610 km N of Cloverdale, CaliforniaWed, Nov 7, 3:21 PM PST · 15306 days ago · 3 km deep · 19 km away
48. 2.04 km S of Cobb, CaliforniaWed, Nov 7, 6:59 PM PST · 15306 days ago · 1 km deep · 9 km away
49. 1.57 km S of Cobb, CaliforniaWed, Nov 7, 7:02 PM PST · 15306 days ago · 1 km deep · 11 km away
50. 1.86 km W of Cobb, CaliforniaThu, Nov 8, 12:00 PM PST · 15306 days ago · 3 km deep · 2 km away
51. 2.35 km WSW of Cobb, CaliforniaThu, Nov 8, 5:15 PM PST · 15305 days ago · 1 km deep · 4 km away
52. 1.94 km WSW of Cobb, CaliforniaThu, Nov 8, 9:55 PM PST · 15305 days ago · 1 km deep · 4 km away
53. 1.64 km ENE of Brooktrails, CaliforniaFri, Nov 9, 9:09 AM PST · 15305 days ago · 2 km deep · 84 km away
54. 1.96 km W of Cobb, CaliforniaFri, Nov 9, 5:05 PM PST · 15304 days ago · 3 km deep · 2 km away
55. 1.78 km WNW of Cobb, CaliforniaFri, Nov 9, 8:50 PM PST · 15304 days ago · 0 km deep · 3 km away
56. 1.64 km SW of Cobb, CaliforniaSat, Nov 10, 12:29 AM PST · 15304 days ago · -1 km deep · 5 km away
57. 2.56 km W of Cobb, CaliforniaSat, Nov 10, 7:01 PM PST · 15303 days ago · 3 km deep · 1 km away
58. 1.87 km W of Cobb, CaliforniaSun, Nov 11, 1:49 PM PST · 15302 days ago · 3 km deep · 1 km away
59. 2.45 km WSW of Cobb, CaliforniaMon, Nov 12, 5:04 AM PST · 15302 days ago · -1 km deep · 4 km away
60. 1.66 km W of Cobb, CaliforniaMon, Nov 12, 5:31 AM PST · 15302 days ago · 3 km deep · 1 km away

The first 60 of 185.

Before

1. 1.8Northern CaliforniaThu, Oct 18, 9:59 AM PDT · 15327 days ago · 10 km deep · 57 km away
2. 1.75 km WSW of Cobb, CaliforniaThu, Oct 18, 4:27 AM PDT · 15327 days ago · 0 km deep · 4 km away
3. 1.95 km WSW of Cobb, CaliforniaThu, Oct 18, 4:17 AM PDT · 15327 days ago · 0 km deep · 4 km away
4. 3.88 km NW of Cobb, CaliforniaWed, Oct 17, 8:26 PM PDT · 15327 days ago · 2 km deep · 5 km away
5. 2.27 km W of Cobb, CaliforniaTue, Oct 16, 4:43 PM PDT · 15328 days ago · 3 km deep · 1 km away
6. 1.92 km N of Clearlake, CaliforniaTue, Oct 16, 4:51 AM PDT · 15329 days ago · 3 km deep · 23 km away
7. 1.75 km WSW of Cobb, CaliforniaMon, Oct 15, 1:02 AM PDT · 15330 days ago · 1 km deep · 4 km away
8. 1.912 km WSW of Brooktrails, CaliforniaSun, Oct 14, 7:17 PM PDT · 15330 days ago · 4 km deep · 90 km away
9. 1.75 km SW of Cobb, CaliforniaSun, Oct 14, 6:24 PM PDT · 15330 days ago · 0 km deep · 6 km away
10. 1.84 km WSW of Cobb, CaliforniaSun, Oct 14, 12:27 AM PDT · 15331 days ago · 1 km deep · 5 km away
11. 1.66 km WSW of Cobb, CaliforniaSat, Oct 13, 12:48 PM PDT · 15332 days ago · 1 km deep · 3 km away
12. 1.66 km N of Hopland, CaliforniaSat, Oct 13, 4:18 AM PDT · 15332 days ago · 5 km deep · 34 km away
13. 1.77 km W of Cobb, CaliforniaFri, Oct 12, 8:52 PM PDT · 15332 days ago · 3 km deep · 2 km away
14. 1.62 km WNW of Fulton, CaliforniaFri, Oct 12, 4:11 PM PDT · 15332 days ago · 2 km deep · 36 km away
15. 2.34 km WSW of Cobb, CaliforniaFri, Oct 12, 2:47 PM PDT · 15332 days ago · 1 km deep · 5 km away
16. 1.64 km SSW of Cobb, CaliforniaThu, Oct 11, 12:56 PM PDT · 15334 days ago · -1 km deep · 8 km away
17. 2.46 km W of Cobb, CaliforniaThu, Oct 11, 11:05 AM PDT · 15334 days ago · 3 km deep · 1 km away
18. 1.87 km W of Cobb, CaliforniaWed, Oct 10, 9:41 PM PDT · 15334 days ago · 4 km deep · 1 km away
19. 1.63 km ENE of Hidden Valley Lake, CaliforniaWed, Oct 10, 7:05 PM PDT · 15334 days ago · 9 km deep · 25 km away
20. 2.12 km NNW of Hopland, CaliforniaWed, Oct 10, 6:30 PM PDT · 15334 days ago · 3 km deep · 33 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc30338. Read Mon, Oct 5, 2026, 7:46 AM UTC.