M2.1 earthquake 7 km WSW of Cobb, California

Magnitude

2.1 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sun, May 27, 1990, 2:38 PM PDT

UTC

1990-05-27 21:38:59 UTC

Depth

3.3 km (2.0 mi), shallow

Epicenter

38.801° N, 122.804° 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

±0.16

Depth from

From location

Station coverage gap

39°

Stations used

28

• Cobb, CaliforniaPopulation 1,778. Forecast7 kmWSW
• Healdsburg, CaliforniaPopulation 11,742. Forecast22 kmNNE
• Santa Rosa, CaliforniaPopulation 178,127. Forecast41 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast667 kmNW

After

1. 2.85 km WSW of Cobb, CaliforniaSun, May 27, 8:49 PM PDT · 13278 days ago · 0 km deep · 2 km away
2. 1.6Northern CaliforniaSun, May 27, 9:41 PM PDT · 13278 days ago · -1 km deep · 2 km away
3. 1.86 km W of Cobb, CaliforniaMon, May 28, 4:38 AM PDT · 13278 days ago · 4 km deep · 2 km away
4. 1.812 km ENE of Cloverdale, CaliforniaMon, May 28, 7:56 AM PDT · 13278 days ago · 1 km deep · 7 km away
5. 1.84 km W of Cobb, CaliforniaTue, May 29, 4:20 PM PDT · 13276 days ago · 1 km deep · 3 km away
6. 2.76 km W of Cobb, CaliforniaTue, May 29, 7:04 PM PDT · 13276 days ago · 0 km deep · 3 km away
7. 1.87 km E of Hopland, CaliforniaWed, May 30, 12:12 AM PDT · 13276 days ago · 5 km deep · 28 km away
8. 1.93 km SW of Bodega Bay, CaliforniaThu, May 31, 12:15 AM PDT · 13275 days ago · 10 km deep · 59 km away
9. 1.94 km SW of Cobb, CaliforniaThu, May 31, 6:09 AM PDT · 13275 days ago · 3 km deep · 5 km away
10. 2.212 km W of Cobb, CaliforniaThu, May 31, 7:59 AM PDT · 13275 days ago · 1 km deep · 7 km away
11. 1.712 km W of Cobb, CaliforniaThu, May 31, 11:30 AM PDT · 13275 days ago · 1 km deep · 7 km away
12. 2.77 km W of Cobb, CaliforniaThu, May 31, 1:30 PM PDT · 13275 days ago · 2 km deep · 3 km away
13. 1.713 km ENE of Cloverdale, CaliforniaThu, May 31, 6:20 PM PDT · 13274 days ago · 0 km deep · 7 km away
14. 2.05 km W of Cobb, CaliforniaThu, May 31, 8:16 PM PDT · 13274 days ago · 2 km deep · 3 km away
15. 2.15 km SW of Cobb, CaliforniaFri, Jun 1, 5:44 AM PDT · 13274 days ago · 2 km deep · 3 km away
16. 1.65 km W of Cobb, CaliforniaFri, Jun 1, 8:12 PM PDT · 13273 days ago · 0 km deep · 2 km away
17. 2.210 km NNE of Brooktrails, CaliforniaSat, Jun 2, 6:25 PM PDT · 13272 days ago · 8 km deep · 93 km away
18. 2.31 km SSE of Clear Lake Riviera, CaliforniaSun, Jun 3, 12:34 AM PDT · 13272 days ago · -1 km deep · 17 km away
19. 2.09 km W of Cobb, CaliforniaSun, Jun 3, 5:59 AM PDT · 13272 days ago · 2 km deep · 5 km away
20. 2.86 km W of Cobb, CaliforniaSun, Jun 3, 11:59 AM PDT · 13272 days ago · 2 km deep · 2 km away
21. 1.65 km SSW of Cobb, CaliforniaSun, Jun 3, 4:47 PM PDT · 13271 days ago · -1 km deep · 5 km away
22. 1.610 km ENE of Hidden Valley Lake, CaliforniaSun, Jun 3, 6:08 PM PDT · 13271 days ago · 4 km deep · 32 km away
23. 1.92 km SSE of North Lakeport, CaliforniaTue, Jun 5, 12:38 AM PDT · 13270 days ago · 15 km deep · 31 km away
24. 3.17 km WSW of Cobb, CaliforniaTue, Jun 5, 2:16 AM PDT · 13270 days ago · 2 km deep · 0 km away
25. 1.65 km WSW of Cobb, CaliforniaTue, Jun 5, 4:55 AM PDT · 13270 days ago · 1 km deep · 2 km away
26. 2.45 km W of Cobb, CaliforniaTue, Jun 5, 4:56 AM PDT · 13270 days ago · 1 km deep · 2 km away
27. 1.5Northern CaliforniaWed, Jun 6, 4:44 PM PDT · 13268 days ago · 4 km deep · 17 km away
28. 2.09 km W of Cobb, CaliforniaWed, Jun 6, 6:02 PM PDT · 13268 days ago · 1 km deep · 3 km away
29. 2.59 km W of Cobb, CaliforniaWed, Jun 6, 6:02 PM PDT · 13268 days ago · -1 km deep · 3 km away
30. 2.29 km W of Cobb, CaliforniaThu, Jun 7, 12:18 PM PDT · 13268 days ago · 1 km deep · 3 km away
31. 1.97 km WSW of Cobb, CaliforniaThu, Jun 7, 9:28 PM PDT · 13267 days ago · 0 km deep · 1 km away
32. 1.74 km W of Cobb, CaliforniaFri, Jun 8, 5:00 PM PDT · 13266 days ago · 0 km deep · 4 km away
33. 2.04 km W of Cobb, CaliforniaFri, Jun 8, 5:01 PM PDT · 13266 days ago · 1 km deep · 4 km away
34. 3.64 km W of Cobb, CaliforniaFri, Jun 8, 5:04 PM PDT · 13266 days ago · 2 km deep · 4 km away
35. 2.05 km SW of Cobb, CaliforniaFri, Jun 8, 5:06 PM PDT · 13266 days ago · 1 km deep · 2 km away
36. 1.84 km WNW of Cobb, CaliforniaFri, Jun 8, 5:08 PM PDT · 13266 days ago · 2 km deep · 4 km away
37. 1.85 km W of Cobb, CaliforniaFri, Jun 8, 5:10 PM PDT · 13266 days ago · 1 km deep · 2 km away
38. 1.65 km W of Cobb, CaliforniaFri, Jun 8, 5:12 PM PDT · 13266 days ago · 0 km deep · 2 km away
39. 1.65 km WSW of Cobb, CaliforniaSat, Jun 9, 3:29 AM PDT · 13266 days ago · 1 km deep · 2 km away
40. 1.97 km WSW of Cobb, CaliforniaSat, Jun 9, 8:35 PM PDT · 13265 days ago · 2 km deep · 1 km away
41. 2.86 km W of Cobb, CaliforniaSun, Jun 10, 2:26 PM PDT · 13265 days ago · 3 km deep · 2 km away
42. 3.55 km SW of Yountville, CaliforniaMon, Jun 11, 2:07 AM PDT · 13264 days ago · 10 km deep · 59 km away
43. 1.67 km W of Cobb, CaliforniaTue, Jun 12, 9:47 AM PDT · 13263 days ago · 3 km deep · 2 km away
44. 1.63 km SSW of Cobb, CaliforniaTue, Jun 12, 7:59 PM PDT · 13262 days ago · 1 km deep · 5 km away
45. 1.74 km W of Cobb, CaliforniaTue, Jun 12, 11:05 PM PDT · 13262 days ago · 2 km deep · 3 km away
46. 2.16 km W of Cobb, CaliforniaWed, Jun 13, 12:40 PM PDT · 13262 days ago · 0 km deep · 2 km away
47. 1.54 km SSW of Cobb, CaliforniaThu, Jun 14, 12:51 AM PDT · 13261 days ago · 0 km deep · 5 km away
48. 1.93 km SW of Moskowite Corner, CaliforniaThu, Jun 14, 4:41 AM PDT · 13261 days ago · 8 km deep · 66 km away
49. 2.45 km SW of Cobb, CaliforniaThu, Jun 14, 4:52 PM PDT · 13260 days ago · 1 km deep · 3 km away
50. 1.92 km SW of Cobb, CaliforniaThu, Jun 14, 6:15 PM PDT · 13260 days ago · 1 km deep · 5 km away
51. 1.819 km ENE of Potter Valley, CaliforniaFri, Jun 15, 4:16 PM PDT · 13259 days ago · 8 km deep · 64 km away
52. 2.07 km W of Cobb, CaliforniaSat, Jun 16, 7:33 AM PDT · 13259 days ago · 3 km deep · 3 km away
53. 1.913 km NNW of Moskowite Corner, CaliforniaSun, Jun 17, 4:15 PM PDT · 13257 days ago · 3 km deep · 55 km away
54. 1.58 km W of Cobb, CaliforniaSun, Jun 17, 5:16 PM PDT · 13257 days ago · 0 km deep · 2 km away
55. 2.010 km NNE of Larkfield-Wikiup, CaliforniaSun, Jun 17, 10:51 PM PDT · 13257 days ago · 5 km deep · 25 km away
56. 2.38 km W of Cobb, CaliforniaMon, Jun 18, 12:44 AM PDT · 13257 days ago · 0 km deep · 2 km away
57. 2.85 km WSW of Cobb, CaliforniaMon, Jun 18, 6:27 PM PDT · 13256 days ago · 2 km deep · 2 km away
58. 2.08 km ENE of Potter Valley, CaliforniaMon, Jun 18, 9:26 PM PDT · 13256 days ago · 5 km deep · 62 km away
59. 1.78 km E of Potter Valley, CaliforniaMon, Jun 18, 9:51 PM PDT · 13256 days ago · 2 km deep · 62 km away
60. 1.64 km N of Larkfield-Wikiup, CaliforniaWed, Jun 20, 1:56 AM PDT · 13255 days ago · 5 km deep · 28 km away

The first 60 of 173.

Before

1. 1.65 km W of Cobb, CaliforniaSun, May 27, 11:42 AM PDT · 13279 days ago · 0 km deep · 3 km away
2. 1.612 km ENE of Cloverdale, CaliforniaSun, May 27, 5:53 AM PDT · 13279 days ago · 0 km deep · 7 km away
3. 1.90 km W of Crockett, CaliforniaSat, May 26, 1:07 PM PDT · 13280 days ago · 10 km deep · 97 km away
4. 1.87 km WSW of Cobb, CaliforniaSat, May 26, 12:33 PM PDT · 13280 days ago · 1 km deep · 0 km away
5. 2.06 km SW of Cobb, CaliforniaThu, May 24, 3:45 PM PDT · 13281 days ago · 2 km deep · 2 km away
6. 1.95 km W of Cobb, CaliforniaThu, May 24, 11:11 AM PDT · 13282 days ago · 0 km deep · 3 km away
7. 2.74 km S of Cobb, CaliforniaThu, May 24, 1:58 AM PDT · 13282 days ago · 1 km deep · 7 km away
8. 1.69 km W of Cobb, CaliforniaWed, May 23, 10:42 AM PDT · 13283 days ago · 0 km deep · 3 km away
9. 2.19 km W of Cobb, CaliforniaWed, May 23, 10:30 AM PDT · 13283 days ago · 0 km deep · 3 km away
10. 2.48 km W of Cobb, CaliforniaWed, May 23, 10:29 AM PDT · 13283 days ago · -1 km deep · 3 km away
11. 3.19 km W of Cobb, CaliforniaWed, May 23, 10:28 AM PDT · 13283 days ago · -1 km deep · 3 km away
12. 3.58 km W of Cobb, CaliforniaWed, May 23, 10:27 AM PDT · 13283 days ago · -1 km deep · 4 km away
13. 1.69 km W of Cobb, CaliforniaWed, May 23, 5:03 AM PDT · 13283 days ago · 1 km deep · 4 km away
14. 2.24 km W of Cobb, CaliforniaTue, May 22, 11:33 AM PDT · 13284 days ago · 2 km deep · 3 km away
15. 2.25 km SW of Cobb, CaliforniaMon, May 21, 5:42 PM PDT · 13284 days ago · 2 km deep · 3 km away
16. 1.55 km SSW of Cobb, CaliforniaMon, May 21, 3:31 PM PDT · 13284 days ago · 2 km deep · 6 km away
17. 1.65 km SW of Cobb, CaliforniaMon, May 21, 12:35 PM PDT · 13285 days ago · 1 km deep · 3 km away
18. 1.64 km S of Cobb, CaliforniaMon, May 21, 12:13 PM PDT · 13285 days ago · 2 km deep · 7 km away
19. 1.56 km S of Cobb, CaliforniaSun, May 20, 7:34 PM PDT · 13285 days ago · 1 km deep · 8 km away
20. 2.18 km WSW of Cobb, CaliforniaSun, May 20, 5:56 PM PDT · 13285 days ago · 4 km deep · 1 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc158462. Read Sun, Oct 4, 2026, 9:41 AM UTC.