M1.8 earthquake 6 km W of Cobb, California

Magnitude

1.8 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Fri, Feb 9, 1990, 4:20 PM PST

UTC

1990-02-10 00:20:09 UTC

Depth

1.3 km (0.8 mi), shallow

Epicenter

38.828° N, 122.795° 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

±0.18

Depth from

From location

Station coverage gap

41°

Stations used

22

• Cobb, CaliforniaPopulation 1,778. Forecast6 kmW
• Clearlake, CaliforniaPopulation 15,182. Forecast21 kmSW
• Santa Rosa, CaliforniaPopulation 178,127. Forecast44 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast669 kmNW

After

1. 1.76 km S of Cobb, CaliforniaFri, Feb 9, 5:23 PM PST · 13387 days ago · 2 km deep · 10 km away
2. 1.74 km W of Cobb, CaliforniaSat, Feb 10, 7:43 AM PST · 13386 days ago · 1 km deep · 2 km away
3. 1.513 km N of Brooktrails, CaliforniaSun, Feb 11, 4:32 AM PST · 13385 days ago · 5 km deep · 97 km away
4. 1.512 km ESE of Hidden Valley Lake, CaliforniaSun, Feb 11, 6:35 AM PST · 13385 days ago · 4 km deep · 32 km away
5. 2.17 km WSW of Cobb, CaliforniaSun, Feb 11, 5:33 PM PST · 13384 days ago · 2 km deep · 3 km away
6. 1.95 km SW of Cobb, CaliforniaSun, Feb 11, 8:43 PM PST · 13384 days ago · 2 km deep · 4 km away
7. 2.112 km WSW of Hopland, CaliforniaSun, Feb 11, 9:24 PM PST · 13384 days ago · -1 km deep · 41 km away
8. 2.35 km WSW of Cobb, CaliforniaMon, Feb 12, 10:28 AM PST · 13384 days ago · 0 km deep · 4 km away
9. 1.86 km W of Cobb, CaliforniaMon, Feb 12, 11:11 AM PST · 13384 days ago · 3 km deep · 1 km away
10. 1.73 km NE of Hopland, CaliforniaMon, Feb 12, 11:24 AM PST · 13384 days ago · 3 km deep · 31 km away
11. 1.87 km W of Cobb, CaliforniaMon, Feb 12, 10:29 PM PST · 13383 days ago · 3 km deep · 1 km away
12. 1.96 km WSW of Cobb, CaliforniaTue, Feb 13, 3:13 AM PST · 13383 days ago · 1 km deep · 3 km away
13. 1.86 km W of Cobb, CaliforniaTue, Feb 13, 9:43 AM PST · 13383 days ago · 3 km deep · 1 km away
14. 1.71 km ESE of Larkfield-Wikiup, CaliforniaTue, Feb 13, 10:48 AM PST · 13383 days ago · 4 km deep · 36 km away
15. 3.14 km W of Cobb, CaliforniaTue, Feb 13, 2:19 PM PST · 13383 days ago · -1 km deep · 2 km away
16. 1.57 km NE of Rohnert Park, CaliforniaTue, Feb 13, 11:11 PM PST · 13382 days ago · 6 km deep · 52 km away
17. 1.56 km W of Cobb, CaliforniaWed, Feb 14, 11:18 PM PST · 13381 days ago · -1 km deep · 1 km away
18. 1.57 km N of Geyserville, CaliforniaThu, Feb 15, 3:53 AM PST · 13381 days ago · 4 km deep · 11 km away
19. 2.17 km N of Geyserville, CaliforniaThu, Feb 15, 5:02 AM PST · 13381 days ago · 4 km deep · 11 km away
20. 1.51 km W of Forestville, CaliforniaThu, Feb 15, 10:58 AM PST · 13381 days ago · 5 km deep · 41 km away
21. 2.321 km NE of Potter Valley, CaliforniaFri, Feb 16, 2:17 AM PST · 13380 days ago · 7 km deep · 71 km away
22. 1.76 km SW of Cobb, CaliforniaFri, Feb 16, 2:40 PM PST · 13380 days ago · 3 km deep · 5 km away
23. 2.69 km ENE of Hidden Valley Lake, CaliforniaFri, Feb 16, 3:03 PM PST · 13380 days ago · 9 km deep · 30 km away
24. 1.75 km W of Cobb, CaliforniaFri, Feb 16, 7:55 PM PST · 13379 days ago · 1 km deep · 2 km away
25. 1.53 km SW of Cobb, CaliforniaSat, Feb 17, 6:41 AM PST · 13379 days ago · 1 km deep · 5 km away
26. 1.77 km SW of Kenwood, CaliforniaSat, Feb 17, 9:33 AM PST · 13379 days ago · 4 km deep · 53 km away
27. 1.79 km W of Cobb, CaliforniaSat, Feb 17, 5:46 PM PST · 13378 days ago · 0 km deep · 3 km away
28. 1.79 km W of Cobb, CaliforniaSat, Feb 17, 5:47 PM PST · 13378 days ago · 1 km deep · 3 km away
29. 2.63 km SSW of Cobb, CaliforniaSat, Feb 17, 9:50 PM PST · 13378 days ago · 1 km deep · 6 km away
30. 1.83 km SSW of Cobb, CaliforniaSat, Feb 17, 9:52 PM PST · 13378 days ago · 2 km deep · 6 km away
31. 1.51 km ESE of Larkfield-Wikiup, CaliforniaSat, Feb 17, 10:14 PM PST · 13378 days ago · 4 km deep · 36 km away
32. 1.99 km NNE of Hopland, CaliforniaSun, Feb 18, 1:08 PM PST · 13378 days ago · 5 km deep · 33 km away
33. 1.68 km W of Cobb, CaliforniaSun, Feb 18, 5:51 PM PST · 13377 days ago · 0 km deep · 3 km away
34. 3.2near the coast of Northern CaliforniaMon, Feb 19, 3:28 AM PST · 13377 days ago · 1 km deep · 35 km away
35. 1.87 km ENE of Brooktrails, CaliforniaMon, Feb 19, 4:15 AM PST · 13377 days ago · 6 km deep · 85 km away
36. 1.65 km SSW of Cobb, CaliforniaMon, Feb 19, 8:26 AM PST · 13377 days ago · 0 km deep · 7 km away
37. 2.05 km W of Cobb, CaliforniaMon, Feb 19, 3:26 PM PST · 13377 days ago · 0 km deep · 1 km away
38. 1.513 km ENE of Healdsburg, CaliforniaTue, Feb 20, 11:45 PM PST · 13375 days ago · 6 km deep · 19 km away
39. 1.96 km SW of Cobb, CaliforniaWed, Feb 21, 9:59 AM PST · 13375 days ago · 2 km deep · 5 km away
40. 1.98 km W of Cobb, CaliforniaWed, Feb 21, 5:23 PM PST · 13375 days ago · 1 km deep · 3 km away
41. 2.65 km WSW of Cobb, CaliforniaWed, Feb 21, 6:01 PM PST · 13374 days ago · 2 km deep · 2 km away
42. 1.85 km WSW of Cobb, CaliforniaWed, Feb 21, 6:04 PM PST · 13374 days ago · 2 km deep · 2 km away
43. 1.56 km SW of Cobb, CaliforniaWed, Feb 21, 9:40 PM PST · 13374 days ago · -1 km deep · 5 km away
44. 1.66 km SW of Cobb, CaliforniaWed, Feb 21, 9:41 PM PST · 13374 days ago · -1 km deep · 5 km away
45. 1.66 km WSW of Cobb, CaliforniaThu, Feb 22, 1:22 AM PST · 13374 days ago · 0 km deep · 3 km away
46. 1.67 km WSW of Cobb, CaliforniaThu, Feb 22, 5:13 AM PST · 13374 days ago · 1 km deep · 3 km away
47. 1.86 km SW of Cobb, CaliforniaThu, Feb 22, 10:57 AM PST · 13374 days ago · 0 km deep · 5 km away
48. 1.77 km ESE of Geyserville, CaliforniaThu, Feb 22, 9:13 PM PST · 13373 days ago · 6 km deep · 16 km away
49. 1.66 km SW of Cobb, CaliforniaFri, Feb 23, 4:14 PM PST · 13373 days ago · 1 km deep · 5 km away
50. 2.2Northern CaliforniaSat, Feb 24, 5:15 AM PST · 13372 days ago · -1 km deep · 0 km away
51. 1.86 km W of Cobb, CaliforniaSat, Feb 24, 5:15 AM PST · 13372 days ago · 1 km deep · 1 km away
52. 1.85 km WSW of Cobb, CaliforniaSat, Feb 24, 9:49 PM PST · 13371 days ago · 1 km deep · 3 km away
53. 1.75 km SW of Cobb, CaliforniaSun, Feb 25, 12:26 AM PST · 13371 days ago · 2 km deep · 4 km away
54. 1.79 km W of Cobb, CaliforniaSun, Feb 25, 1:34 AM PST · 13371 days ago · 0 km deep · 3 km away
55. 2.36 km SW of Cobb, CaliforniaSun, Feb 25, 4:41 AM PST · 13371 days ago · 2 km deep · 4 km away
56. 1.67 km WSW of Cobb, CaliforniaSun, Feb 25, 7:39 PM PST · 13370 days ago · 1 km deep · 3 km away
57. 1.86 km SW of Cobb, CaliforniaMon, Feb 26, 12:25 AM PST · 13370 days ago · 0 km deep · 6 km away
58. 1.811 km WNW of Calistoga, CaliforniaMon, Feb 26, 1:43 AM PST · 13370 days ago · 45 km deep · 24 km away
59. 2.25 km WSW of Cobb, CaliforniaMon, Feb 26, 6:06 AM PST · 13370 days ago · 0 km deep · 3 km away
60. 2.07 km ENE of Rohnert Park, CaliforniaMon, Feb 26, 7:14 AM PST · 13370 days ago · 3 km deep · 54 km away

The first 60 of 181.

Before

1. 1.66 km W of Cobb, CaliforniaFri, Feb 9, 3:36 AM PST · 13387 days ago · 0 km deep · 0 km away
2. 2.56 km W of Cobb, CaliforniaFri, Feb 9, 3:35 AM PST · 13387 days ago · 1 km deep · 0 km away
3. 1.612 km ENE of Cloverdale, CaliforniaThu, Feb 8, 3:35 PM PST · 13388 days ago · 1 km deep · 7 km away
4. 1.86 km W of Cobb, CaliforniaThu, Feb 8, 10:45 AM PST · 13388 days ago · 0 km deep · 1 km away
5. 1.67 km W of Cobb, CaliforniaThu, Feb 8, 12:17 AM PST · 13388 days ago · 1 km deep · 2 km away
6. 1.64 km W of Cobb, CaliforniaWed, Feb 7, 12:56 PM PST · 13389 days ago · 2 km deep · 2 km away
7. 2.36 km W of Cobb, CaliforniaWed, Feb 7, 5:59 AM PST · 13389 days ago · 4 km deep · 1 km away
8. 1.713 km W of Cobb, CaliforniaWed, Feb 7, 5:29 AM PST · 13389 days ago · 0 km deep · 7 km away
9. 1.612 km W of Cobb, CaliforniaWed, Feb 7, 5:26 AM PST · 13389 days ago · 0 km deep · 7 km away
10. 2.36 km NNW of The Geysers, CAWed, Feb 7, 12:02 AM PST · 13389 days ago · 1 km deep · 1 km away
11. 2.27 km WSW of Cobb, CaliforniaTue, Feb 6, 11:39 PM PST · 13389 days ago · 1 km deep · 3 km away
12. 1.98 km N of Hopland, CaliforniaTue, Feb 6, 5:43 PM PST · 13389 days ago · -1 km deep · 36 km away
13. 3.17 km WSW of Cobb, CaliforniaMon, Feb 5, 2:26 AM PST · 13391 days ago · 3 km deep · 3 km away
14. 1.85 km WSW of Cobb, CaliforniaSun, Feb 4, 6:05 PM PST · 13391 days ago · 0 km deep · 3 km away
15. 1.85 km W of Cobb, CaliforniaSun, Feb 4, 3:09 AM PST · 13392 days ago · 2 km deep · 1 km away
16. 1.85 km W of Cobb, CaliforniaSat, Feb 3, 1:26 AM PST · 13393 days ago · 1 km deep · 1 km away
17. 2.57 km E of Willits, CaliforniaFri, Feb 2, 9:27 PM PST · 13393 days ago · 6 km deep · 76 km away
18. 1.69 km W of Cobb, CaliforniaFri, Feb 2, 5:30 PM PST · 13393 days ago · 1 km deep · 3 km away
19. 1.66 km W of Cobb, CaliforniaFri, Feb 2, 1:51 PM PST · 13394 days ago · 3 km deep · 1 km away
20. 2.35 km NE of Ukiah, CaliforniaThu, Feb 1, 2:56 PM PST · 13395 days ago · 1 km deep · 51 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc152176. Read Mon, Oct 5, 2026, 12:56 PM UTC.