M1.6 earthquake 5 km SW of Cobb, California

Magnitude

1.6 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sat, Apr 7, 1990, 1:56 PM PDT

UTC

1990-04-07 20:56:10 UTC

Depth

-0.3 km (-0.2 mi), shallow

Epicenter

38.781° N, 122.765° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.3 km horizontally, 0.7 km in depth

Magnitude uncertainty

±0.11

Depth from

From location

Station coverage gap

111°

Stations used

9

• Cobb, CaliforniaPopulation 1,778. Forecast6 kmSW
• Healdsburg, CaliforniaPopulation 11,742. Forecast21 kmNNE
• Santa Rosa, CaliforniaPopulation 178,127. Forecast38 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast663 kmNW

After

1. 1.93 km S of Cobb, CaliforniaSun, Apr 8, 7:03 AM PDT · 13328 days ago · 2 km deep · 4 km away
2. 1.710 km NE of Clearlake, CaliforniaSun, Apr 8, 11:50 AM PDT · 13328 days ago · -1 km deep · 34 km away
3. 1.66 km SW of Cobb, CaliforniaSun, Apr 8, 2:39 PM PDT · 13328 days ago · 0 km deep · 1 km away
4. 1.710 km W of Cobb, CaliforniaSun, Apr 8, 11:33 PM PDT · 13327 days ago · 0 km deep · 8 km away
5. 2.24 km SW of Cobb, CaliforniaMon, Apr 9, 3:00 AM PDT · 13327 days ago · 1 km deep · 1 km away
6. 1.59 km W of Cobb, CaliforniaMon, Apr 9, 5:31 AM PDT · 13327 days ago · 1 km deep · 7 km away
7. 1.62 km NE of Santa Rosa, CaliforniaMon, Apr 9, 12:43 PM PDT · 13327 days ago · 8 km deep · 37 km away
8. 2.23 km NNE of Talmage, CaliforniaMon, Apr 9, 1:20 PM PDT · 13327 days ago · 6 km deep · 53 km away
9. 1.75 km ENE of Sonoma, CaliforniaMon, Apr 9, 4:39 PM PDT · 13327 days ago · 9 km deep · 62 km away
10. 1.65 km WSW of Cobb, CaliforniaMon, Apr 9, 7:11 PM PDT · 13327 days ago · 1 km deep · 3 km away
11. 1.67 km W of Cobb, CaliforniaMon, Apr 9, 8:20 PM PDT · 13327 days ago · 3 km deep · 6 km away
12. 2.3near the coast of Northern CaliforniaMon, Apr 9, 9:57 PM PDT · 13327 days ago · 2 km deep · 82 km away
13. 1.86 km SW of Cobb, CaliforniaWed, Apr 11, 4:14 PM PDT · 13325 days ago · 3 km deep · 1 km away
14. 1.66 km W of Cobb, CaliforniaThu, Apr 12, 4:27 AM PDT · 13324 days ago · 3 km deep · 6 km away
15. 1.64 km ESE of Roseland, CaliforniaThu, Apr 12, 8:17 AM PDT · 13324 days ago · 7 km deep · 43 km away
16. 1.79 km W of Cobb, CaliforniaThu, Apr 12, 6:45 PM PDT · 13324 days ago · 0 km deep · 6 km away
17. 1.86 km WSW of Cobb, CaliforniaFri, Apr 13, 3:32 PM PDT · 13323 days ago · -1 km deep · 3 km away
18. 2.0Northern CaliforniaSat, Apr 14, 11:38 AM PDT · 13322 days ago · 1 km deep · 4 km away
19. 1.66 km W of Cobb, CaliforniaSat, Apr 14, 2:32 PM PDT · 13322 days ago · 1 km deep · 5 km away
20. 2.210 km NNE of Larkfield-Wikiup, CaliforniaSat, Apr 14, 4:35 PM PDT · 13322 days ago · 3 km deep · 21 km away
21. 3.14 km WSW of Cobb, CaliforniaSat, Apr 14, 9:17 PM PDT · 13322 days ago · 1 km deep · 2 km away
22. 1.65 km WSW of Cobb, CaliforniaSun, Apr 15, 3:50 AM PDT · 13321 days ago · 1 km deep · 3 km away
23. 1.95 km WSW of Cobb, CaliforniaTue, Apr 17, 2:57 AM PDT · 13319 days ago · 1 km deep · 3 km away
24. 1.85 km WSW of Cobb, CaliforniaTue, Apr 17, 3:33 AM PDT · 13319 days ago · 1 km deep · 3 km away
25. 2.25 km SSW of Cobb, CaliforniaTue, Apr 17, 7:32 AM PDT · 13319 days ago · 1 km deep · 1 km away
26. 1.95 km SW of Cobb, CaliforniaTue, Apr 17, 1:20 PM PDT · 13319 days ago · 1 km deep · 1 km away
27. 1.69 km WNW of Cobb, CaliforniaTue, Apr 17, 3:42 PM PDT · 13319 days ago · 2 km deep · 8 km away
28. 1.69 km W of Cobb, CaliforniaWed, Apr 18, 12:23 AM PDT · 13318 days ago · 2 km deep · 8 km away
29. 1.75 km SW of Cobb, CaliforniaWed, Apr 18, 3:31 AM PDT · 13318 days ago · 0 km deep · 1 km away
30. 1.77 km NW of Cobb, CaliforniaWed, Apr 18, 10:16 AM PDT · 13318 days ago · 2 km deep · 9 km away
31. 2.45 km WSW of Cobb, CaliforniaWed, Apr 18, 3:56 PM PDT · 13318 days ago · 1 km deep · 3 km away
32. 1.75 km W of Cobb, CaliforniaWed, Apr 18, 8:47 PM PDT · 13318 days ago · 1 km deep · 4 km away
33. 1.55 km WNW of Cobb, CaliforniaThu, Apr 19, 3:08 AM PDT · 13317 days ago · 0 km deep · 6 km away
34. 1.65 km E of Willits, CaliforniaThu, Apr 19, 3:58 AM PDT · 13317 days ago · 5 km deep · 84 km away
35. 2.25 km SW of Cobb, CaliforniaThu, Apr 19, 10:57 AM PDT · 13317 days ago · 0 km deep · 1 km away
36. 2.47 km WSW of Cobb, CaliforniaThu, Apr 19, 5:37 PM PDT · 13317 days ago · 0 km deep · 4 km away
37. 1.86 km NNW of Green Valley, CaliforniaFri, Apr 20, 8:23 AM PDT · 13316 days ago · 8 km deep · 73 km away
38. 1.95 km E of Elk Creek, CaliforniaFri, Apr 20, 10:05 AM PDT · 13316 days ago · 42 km deep · 95 km away
39. 1.77 km NNW of Green Valley, CaliforniaFri, Apr 20, 10:22 PM PDT · 13315 days ago · 9 km deep · 72 km away
40. 2.114 km NNW of Moskowite Corner, CaliforniaSat, Apr 21, 12:39 AM PDT · 13315 days ago · 2 km deep · 50 km away
41. 1.67 km W of Cobb, CaliforniaSat, Apr 21, 2:03 AM PDT · 13315 days ago · 4 km deep · 5 km away
42. 1.86 km E of Santa Rosa, CaliforniaSat, Apr 21, 12:51 PM PDT · 13315 days ago · 8 km deep · 41 km away
43. 1.86 km W of Cobb, CaliforniaSun, Apr 22, 12:10 AM PDT · 13314 days ago · 4 km deep · 6 km away
44. 1.69 km W of Cobb, CaliforniaSun, Apr 22, 12:25 AM PDT · 13314 days ago · -1 km deep · 7 km away
45. 1.513 km ESE of Hidden Valley Lake, CaliforniaSun, Apr 22, 6:14 AM PDT · 13314 days ago · 8 km deep · 30 km away
46. 3.35 km W of Cobb, CaliforniaSun, Apr 22, 9:16 AM PDT · 13314 days ago · 1 km deep · 5 km away
47. 2.56 km WSW of Cobb, CaliforniaSun, Apr 22, 9:20 AM PDT · 13314 days ago · 0 km deep · 4 km away
48. 2.06 km W of Cobb, CaliforniaSun, Apr 22, 9:28 AM PDT · 13314 days ago · 2 km deep · 5 km away
49. 1.66 km W of Cobb, CaliforniaSun, Apr 22, 10:40 AM PDT · 13314 days ago · 1 km deep · 5 km away
50. 2.17 km WSW of Cobb, CaliforniaSun, Apr 22, 4:51 PM PDT · 13314 days ago · 2 km deep · 4 km away
51. 2.212 km WSW of Hopland, CaliforniaSun, Apr 22, 4:53 PM PDT · 13314 days ago · -1 km deep · 45 km away
52. 2.07 km W of Cobb, CaliforniaMon, Apr 23, 9:00 AM PDT · 13313 days ago · 0 km deep · 7 km away
53. 1.67 km W of Cobb, CaliforniaMon, Apr 23, 7:45 PM PDT · 13313 days ago · 0 km deep · 6 km away
54. 1.66 km W of Cobb, CaliforniaTue, Apr 24, 8:46 PM PDT · 13312 days ago · 1 km deep · 5 km away
55. 2.38 km WNW of Cobb, CaliforniaTue, Apr 24, 8:47 PM PDT · 13312 days ago · 2 km deep · 8 km away
56. 1.55 km SW of Cobb, CaliforniaTue, Apr 24, 11:44 PM PDT · 13311 days ago · 0 km deep · 1 km away
57. 2.014 km SE of Hidden Valley Lake, CaliforniaWed, Apr 25, 2:57 AM PDT · 13311 days ago · 7 km deep · 29 km away
58. 1.66 km W of Cobb, CaliforniaWed, Apr 25, 10:23 AM PDT · 13311 days ago · 3 km deep · 6 km away
59. 1.76 km W of Cobb, CaliforniaWed, Apr 25, 4:05 PM PDT · 13311 days ago · 0 km deep · 6 km away
60. 1.612 km ENE of Cloverdale, CaliforniaWed, Apr 25, 8:06 PM PDT · 13311 days ago · 1 km deep · 11 km away

The first 60 of 169.

Before

1. 2.24 km WSW of Cobb, CaliforniaFri, Apr 6, 11:12 PM PDT · 13329 days ago · 3 km deep · 3 km away
2. 2.08 km W of Cobb, CaliforniaFri, Apr 6, 11:54 AM PDT · 13330 days ago · 3 km deep · 8 km away
3. 2.15 km SE of Hopland, CaliforniaThu, Apr 5, 8:40 PM PDT · 13331 days ago · 4 km deep · 32 km away
4. 1.85 km WSW of Cobb, CaliforniaThu, Apr 5, 7:05 PM PDT · 13331 days ago · 2 km deep · 4 km away
5. 1.69 km NW of Cobb, CaliforniaThu, Apr 5, 2:59 PM PDT · 13331 days ago · 1 km deep · 11 km away
6. 1.57 km W of Cobb, CaliforniaWed, Apr 4, 8:15 PM PDT · 13332 days ago · 3 km deep · 6 km away
7. 3.07 km WSW of Cobb, CaliforniaWed, Apr 4, 7:45 PM PDT · 13332 days ago · 1 km deep · 4 km away
8. 2.18 km ESE of Willits, CaliforniaWed, Apr 4, 4:23 PM PDT · 13332 days ago · 2 km deep · 78 km away
9. 1.65 km SSW of Cobb, CaliforniaTue, Apr 3, 5:50 PM PDT · 13333 days ago · -1 km deep · 1 km away
10. 1.75 km SSW of Cobb, CaliforniaTue, Apr 3, 5:00 PM PDT · 13333 days ago · 1 km deep · 1 km away
11. 2.15 km SW of Cobb, CaliforniaTue, Apr 3, 2:45 PM PDT · 13333 days ago · 2 km deep · 1 km away
12. 2.19 km W of Cobb, CaliforniaTue, Apr 3, 2:16 PM PDT · 13333 days ago · 1 km deep · 7 km away
13. 2.75 km W of Cobb, CaliforniaTue, Apr 3, 2:13 PM PDT · 13333 days ago · -1 km deep · 4 km away
14. 3.66 km W of Cobb, CaliforniaTue, Apr 3, 2:12 PM PDT · 13333 days ago · 1 km deep · 6 km away
15. 2.56 km W of Cobb, CaliforniaTue, Apr 3, 2:07 PM PDT · 13333 days ago · 1 km deep · 6 km away
16. 1.86 km WSW of Cobb, CaliforniaTue, Apr 3, 12:03 AM PDT · 13333 days ago · 1 km deep · 4 km away
17. 2.618 km ENE of Potter Valley, CaliforniaMon, Apr 2, 1:44 PM PDT · 13334 days ago · 7 km deep · 66 km away
18. 2.06 km W of Cobb, CaliforniaSat, Mar 31, 8:54 PM PST · 13336 days ago · 0 km deep · 6 km away
19. 2.23 km SSW of Cobb, CaliforniaSat, Mar 31, 12:34 PM PST · 13336 days ago · 1 km deep · 2 km away
20. 1.67 km WSW of Cobb, CaliforniaSat, Mar 31, 8:15 AM PST · 13336 days ago · 1 km deep · 4 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1174983. Read Sun, Oct 4, 2026, 4:32 PM UTC.