M1.9 earthquake 7 km WSW of Cobb, California

Magnitude

1.9 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Mon, Jul 9, 1990, 11:42 AM PDT

UTC

1990-07-09 18:42:28 UTC

Depth

3.4 km (2.1 mi), shallow

Epicenter

38.794° N, 122.803° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.4 km in depth

Magnitude uncertainty

±0.08

Depth from

From location

Station coverage gap

39°

Stations used

22

• Cobb, CaliforniaPopulation 1,778. Forecast8 kmWSW
• Healdsburg, CaliforniaPopulation 11,742. Forecast21 kmNNE
• Santa Rosa, CaliforniaPopulation 178,127. Forecast40 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast666 kmNW

After

1. 1.615 km N of Upper Lake, CaliforniaMon, Jul 9, 12:40 PM PDT · 13236 days ago · 7 km deep · 58 km away
2. 1.77 km W of Cobb, CaliforniaMon, Jul 9, 1:33 PM PDT · 13236 days ago · 0 km deep · 4 km away
3. 1.79 km ESE of Hopland, CaliforniaTue, Jul 10, 6:26 AM PDT · 13235 days ago · 2 km deep · 24 km away
4. 2.310 km N of Cloverdale, CaliforniaTue, Jul 10, 10:35 AM PDT · 13235 days ago · 2 km deep · 21 km away
5. 1.66 km WNW of Cobb, CaliforniaTue, Jul 10, 10:34 PM PDT · 13234 days ago · 1 km deep · 4 km away
6. 1.66 km W of Cobb, CaliforniaTue, Jul 10, 10:34 PM PDT · 13234 days ago · 1 km deep · 4 km away
7. 1.73 km W of Cobb, CaliforniaTue, Jul 10, 11:51 PM PDT · 13234 days ago · 0 km deep · 5 km away
8. 1.77 km W of Cobb, CaliforniaWed, Jul 11, 12:31 AM PDT · 13234 days ago · 3 km deep · 3 km away
9. 1.66 km WSW of Kenwood, CaliforniaWed, Jul 11, 2:30 AM PDT · 13234 days ago · 7 km deep · 48 km away
10. 1.59 km S of Cobb, CaliforniaWed, Jul 11, 8:53 AM PDT · 13234 days ago · 4 km deep · 8 km away
11. 1.98 km W of Cobb, CaliforniaWed, Jul 11, 9:28 AM PDT · 13234 days ago · 0 km deep · 3 km away
12. 3.57 km WSW of Cobb, CaliforniaWed, Jul 11, 9:29 AM PDT · 13234 days ago · 0 km deep · 2 km away
13. 1.88 km S of Cobb, CaliforniaWed, Jul 11, 12:47 PM PDT · 13234 days ago · 4 km deep · 8 km away
14. 3.06 km WSW of Kenwood, CaliforniaWed, Jul 11, 3:33 PM PDT · 13234 days ago · 8 km deep · 48 km away
15. 2.221 km NE of Potter Valley, CaliforniaWed, Jul 11, 9:58 PM PDT · 13233 days ago · 7 km deep · 74 km away
16. 1.722 km NE of Potter Valley, CaliforniaWed, Jul 11, 10:14 PM PDT · 13233 days ago · 6 km deep · 73 km away
17. 1.67 km ENE of Brooktrails, CaliforniaThu, Jul 12, 3:46 AM PDT · 13233 days ago · 10 km deep · 87 km away
18. 2.48 km WSW of Cobb, CaliforniaThu, Jul 12, 12:18 PM PDT · 13233 days ago · 0 km deep · 1 km away
19. 3.08 km WSW of Cobb, CaliforniaThu, Jul 12, 12:21 PM PDT · 13233 days ago · 0 km deep · 1 km away
20. 2.28 km WSW of Cobb, CaliforniaThu, Jul 12, 12:24 PM PDT · 13233 days ago · -1 km deep · 1 km away
21. 1.97 km WSW of Calistoga, CaliforniaFri, Jul 13, 4:15 PM PDT · 13232 days ago · 1 km deep · 29 km away
22. 3.17 km ENE of Brooktrails, CaliforniaSat, Jul 14, 7:09 AM PDT · 13231 days ago · -1 km deep · 86 km away
23. 2.36 km S of Hopland, CaliforniaSun, Jul 15, 3:11 AM PDT · 13230 days ago · 7 km deep · 30 km away
24. 1.67 km W of Middletown, CaliforniaSun, Jul 15, 9:25 AM PDT · 13230 days ago · 1 km deep · 10 km away
25. 1.77 km N of Geyserville, CaliforniaSun, Jul 15, 7:19 PM PDT · 13230 days ago · 4 km deep · 9 km away
26. 1.77 km N of Geyserville, CaliforniaSun, Jul 15, 10:10 PM PDT · 13229 days ago · 4 km deep · 9 km away
27. 1.64 km W of Cobb, CaliforniaTue, Jul 17, 6:11 AM PDT · 13228 days ago · -1 km deep · 4 km away
28. 1.96 km WSW of Cobb, CaliforniaTue, Jul 17, 10:31 AM PDT · 13228 days ago · -1 km deep · 2 km away
29. 1.5Northern CaliforniaWed, Jul 18, 6:13 AM PDT · 13227 days ago · 0 km deep · 6 km away
30. 1.510 km W of Cobb, CaliforniaWed, Jul 18, 5:19 PM PDT · 13227 days ago · 1 km deep · 4 km away
31. 1.85 km WSW of Cobb, CaliforniaWed, Jul 18, 8:19 PM PDT · 13226 days ago · -1 km deep · 2 km away
32. 2.27 km N of Geyserville, CaliforniaThu, Jul 19, 4:03 PM PDT · 13226 days ago · 4 km deep · 9 km away
33. 1.95 km W of Cobb, CaliforniaThu, Jul 19, 4:08 PM PDT · 13226 days ago · 2 km deep · 3 km away
34. 1.99 km N of Hopland, CaliforniaThu, Jul 19, 9:21 PM PDT · 13225 days ago · 6 km deep · 40 km away
35. 1.87 km N of Geyserville, CaliforniaThu, Jul 19, 11:33 PM PDT · 13225 days ago · 4 km deep · 9 km away
36. 1.92 km SSW of Cobb, CaliforniaFri, Jul 20, 6:03 PM PDT · 13225 days ago · 2 km deep · 5 km away
37. 1.79 km WNW of Cobb, CaliforniaFri, Jul 20, 10:51 PM PDT · 13224 days ago · 2 km deep · 6 km away
38. 2.08 km NE of Hopland, CaliforniaFri, Jul 20, 11:28 PM PDT · 13224 days ago · 5 km deep · 34 km away
39. 1.83 km W of Cobb, CaliforniaSat, Jul 21, 2:10 AM PDT · 13224 days ago · 0 km deep · 4 km away
40. 1.921 km NE of Potter Valley, CaliforniaSat, Jul 21, 3:21 PM PDT · 13224 days ago · 7 km deep · 74 km away
41. 1.60 km E of Cloverdale, CaliforniaSat, Jul 21, 8:02 PM PDT · 13223 days ago · 4 km deep · 18 km away
42. 2.46 km SW of Cobb, CaliforniaSun, Jul 22, 4:43 AM PDT · 13223 days ago · 3 km deep · 2 km away
43. 2.16 km WSW of Cobb, CaliforniaMon, Jul 23, 3:00 AM PDT · 13222 days ago · 1 km deep · 2 km away
44. 1.73 km NE of Clearlake, CaliforniaMon, Jul 23, 8:31 AM PDT · 13222 days ago · -1 km deep · 27 km away
45. 2.21 km W of Larkfield-Wikiup, CaliforniaMon, Jul 23, 4:20 PM PDT · 13222 days ago · 3 km deep · 31 km away
46. 1.66 km W of Cobb, CaliforniaTue, Jul 24, 3:37 AM PDT · 13221 days ago · 1 km deep · 3 km away
47. 2.89 km W of Cobb, CaliforniaTue, Jul 24, 1:47 PM PDT · 13221 days ago · 1 km deep · 5 km away
48. 1.57 km S of Temelec, CaliforniaWed, Jul 25, 2:03 AM PDT · 13220 days ago · 5 km deep · 72 km away
49. 2.716 km NNE of Nice, CaliforniaWed, Jul 25, 6:14 AM PDT · 13220 days ago · 5 km deep · 51 km away
50. 2.16 km W of Cobb, CaliforniaWed, Jul 25, 3:39 PM PDT · 13220 days ago · -1 km deep · 2 km away
51. 2.05 km SW of Cobb, CaliforniaThu, Jul 26, 9:54 AM PDT · 13219 days ago · 0 km deep · 3 km away
52. 1.69 km W of Cobb, CaliforniaFri, Jul 27, 10:54 AM PDT · 13218 days ago · 1 km deep · 5 km away
53. 1.59 km NE of Cloverdale, CaliforniaFri, Jul 27, 7:27 PM PDT · 13218 days ago · 3 km deep · 15 km away
54. 1.56 km S of Cobb, CaliforniaSat, Jul 28, 5:40 AM PDT · 13217 days ago · 1 km deep · 8 km away
55. 2.07 km WSW of Cobb, CaliforniaSat, Jul 28, 7:59 AM PDT · 13217 days ago · 4 km deep · 1 km away
56. 2.314 km N of Brooktrails, CaliforniaSat, Jul 28, 8:08 PM PDT · 13216 days ago · -1 km deep · 99 km away
57. 2.15 km W of Cobb, CaliforniaSat, Jul 28, 9:59 PM PDT · 13216 days ago · 0 km deep · 3 km away
58. 1.55 km E of Yountville, CaliforniaSun, Jul 29, 2:29 AM PDT · 13216 days ago · 17 km deep · 62 km away
59. 1.87 km W of Cobb, CaliforniaSun, Jul 29, 4:55 AM PDT · 13216 days ago · 3 km deep · 3 km away
60. 1.75 km ENE of Santa Rosa, CaliforniaSun, Jul 29, 7:58 PM PDT · 13216 days ago · 6 km deep · 40 km away

The first 60 of 152.

Before

1. 2.04 km WNW of Potter Valley, CaliforniaSun, Jul 8, 2:26 PM PDT · 13237 days ago · 2 km deep · 68 km away
2. 1.99 km E of Hidden Valley Lake, CaliforniaSun, Jul 8, 12:54 PM PDT · 13237 days ago · 7 km deep · 31 km away
3. 1.95 km W of Cobb, CaliforniaSat, Jul 7, 7:37 PM PDT · 13238 days ago · 0 km deep · 3 km away
4. 2.55 km W of Cobb, CaliforniaFri, Jul 6, 8:48 PM PDT · 13238 days ago · 2 km deep · 3 km away
5. 2.05 km WSW of Cobb, CaliforniaFri, Jul 6, 11:20 AM PDT · 13239 days ago · 3 km deep · 2 km away
6. 1.810 km W of Cobb, CaliforniaThu, Jul 5, 9:50 AM PDT · 13240 days ago · 1 km deep · 4 km away
7. 1.54 km W of Cobb, CaliforniaWed, Jul 4, 4:46 PM PDT · 13241 days ago · 0 km deep · 4 km away
8. 1.88 km W of Cobb, CaliforniaMon, Jul 2, 10:12 PM PDT · 13242 days ago · 1 km deep · 4 km away
9. 1.58 km WNW of Cobb, CaliforniaMon, Jul 2, 9:45 PM PDT · 13242 days ago · 2 km deep · 5 km away
10. 3.08 km W of Cobb, CaliforniaMon, Jul 2, 9:44 PM PDT · 13242 days ago · 0 km deep · 5 km away
11. 1.88 km W of Cobb, CaliforniaMon, Jul 2, 9:43 PM PDT · 13242 days ago · 1 km deep · 5 km away
12. 2.96 km W of Allendale, CaliforniaMon, Jul 2, 3:20 PM PDT · 13243 days ago · 2 km deep · 78 km away
13. 1.78 km WSW of Cobb, CaliforniaMon, Jul 2, 4:13 AM PDT · 13243 days ago · 0 km deep · 2 km away
14. 1.95 km WSW of Cobb, CaliforniaSun, Jul 1, 7:06 PM PDT · 13244 days ago · 0 km deep · 2 km away
15. 2.29 km WNW of Cobb, CaliforniaSun, Jul 1, 6:44 PM PDT · 13244 days ago · 2 km deep · 5 km away
16. 2.09 km SSE of Potter Valley, CaliforniaSun, Jul 1, 5:31 PM PDT · 13244 days ago · 4 km deep · 55 km away
17. 1.88 km W of Cobb, CaliforniaSun, Jul 1, 10:28 AM PDT · 13244 days ago · 0 km deep · 3 km away
18. 2.83 km SSW of Cobb, CaliforniaSun, Jul 1, 4:14 AM PDT · 13244 days ago · 1 km deep · 5 km away
19. 2.05 km W of Cobb, CaliforniaSat, Jun 30, 11:20 PM PDT · 13244 days ago · 2 km deep · 3 km away
20. 1.69 km W of Cobb, CaliforniaSat, Jun 30, 2:16 PM PDT · 13245 days ago · 2 km deep · 5 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc160726. Read Sun, Oct 4, 2026, 2:29 PM UTC.