California earthquakes

M1.9 earthquake 7 km W of Cobb, California

A magnitude 1.9 earthquake struck 7 km W of Cobb, California on Sun, Oct 28, 1990, 7:19 AM PST (15:19 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M3.1 6 km W of Cobb, California. This one was a foreshock.

Cobb forecastMore in California

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.9 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1990-10-28 15:19:36 UTC
Depth
3.7 km (2.3 mi), shallow
Epicenter
38.816° N, 122.808° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

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
45°
Stations used
23

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 178 in the 60 days after this one and 83 in the 30 days before it.

After

  1. 1.66 km E of Santa Rosa, California · 13125 days ago · 0 km deep · 43 km away
  2. 2.07 km W of Cobb, California · 13124 days ago · 3 km deep · 1 km away
  3. 2.64 km WSW of Cobb, California · 13123 days ago · 1 km deep · 4 km away
  4. 2.03 km SE of Bodega Bay, California · 13123 days ago · 2 km deep · 59 km away
  5. 2.024 km NE of Potter Valley, California · 13123 days ago · 9 km deep · 77 km away
  6. 1.76 km W of Cobb, California · 13121 days ago · 3 km deep · 1 km away
  7. 1.56 km W of Cobb, California · 13121 days ago · 0 km deep · 1 km away
  8. 1.64 km SW of Cobb, California · 13121 days ago · 0 km deep · 6 km away
  9. 2.06 km WSW of Cobb, California · 13121 days ago · 1 km deep · 1 km away
  10. 1.69 km SW of Cloverdale, California · 13120 days ago · 1 km deep · 26 km away
  11. 2.84 km NE of Point Arena, California · 13120 days ago · -1 km deep · 74 km away
  12. 1.64 km W of Cobb, California · 13119 days ago · 0 km deep · 3 km away
  13. 1.912 km WSW of Willows, California · 13119 days ago · 5 km deep · 86 km away
  14. 1.89 km W of Cobb, California · 13118 days ago · 0 km deep · 2 km away
  15. 2.49 km W of Cobb, California · 13118 days ago · 1 km deep · 2 km away
  16. 2.39 km W of Cobb, California · 13118 days ago · 0 km deep · 2 km away
  17. 1.77 km W of Cobb, California · 13117 days ago · 3 km deep · 1 km away
  18. 1.64 km WSW of Cobb, California · 13117 days ago · 1 km deep · 3 km away
  19. 1.76 km W of Cobb, California · 13117 days ago · 1 km deep · 1 km away
  20. 1.92 km SW of Cobb, California · 13117 days ago · 2 km deep · 6 km away
  21. 2.07 km NE of Hidden Valley Lake, California · 13116 days ago · 12 km deep · 27 km away
  22. 1.84 km WSW of Cobb, California · 13116 days ago · 0 km deep · 3 km away
  23. 1.77 km S of Cobb, California · 13116 days ago · 1 km deep · 10 km away
  24. 1.65 km W of Glen Ellen, California · 13115 days ago · 9 km deep · 54 km away
  25. 1.87 km W of Cobb, California · 13115 days ago · 3 km deep · 1 km away
  26. 1.86 km W of Cobb, California · 13115 days ago · 3 km deep · 1 km away
  27. 1.67 km W of Cobb, California · 13115 days ago · 0 km deep · 2 km away
  28. 1.74 km SW of Cobb, California · 13115 days ago · 1 km deep · 6 km away
  29. 1.72 km NW of Green Valley, California · 13114 days ago · 9 km deep · 82 km away
  30. 2.010 km W of Cobb, California · 13114 days ago · 0 km deep · 3 km away
  31. 1.69 km W of Cobb, CA · 13113 days ago · 1 km deep · 2 km away
  32. 2.1Northern California · 13113 days ago · 1 km deep · 3 km away
  33. 1.910 km W of Cobb, California · 13113 days ago · 1 km deep · 3 km away
  34. 1.610 km E of Cloverdale, California · 13111 days ago · 5 km deep · 8 km away
  35. 1.78 km ENE of Willits, California · 13111 days ago · 3 km deep · 79 km away
  36. 1.57 km WNW of Cobb, California · 13111 days ago · 0 km deep · 2 km away
  37. 2.310 km W of Elk Creek, California · 13111 days ago · 11 km deep · 88 km away
  38. 2.57 km W of Cobb, California · 13111 days ago · 0 km deep · 2 km away
  39. 1.76 km W of Cobb, California · 13111 days ago · 1 km deep · 1 km away
  40. 2.35 km SW of Cobb, California · 13109 days ago · 2 km deep · 4 km away
  41. 2.39 km W of Cobb, California · 13109 days ago · -1 km deep · 2 km away
  42. 1.615 km NE of Upper Lake, California · 13109 days ago · 1 km deep · 49 km away
  43. 1.77 km WSW of Cobb, California · 13108 days ago · 3 km deep · 1 km away
  44. 3.16 km W of Cobb, California · 13108 days ago · 3 km deep · 1 km away
  45. 2.04 km W of Cobb, California · 13108 days ago · -1 km deep · 2 km away
  46. 1.65 km WSW of Cobb, California · 13108 days ago · 3 km deep · 2 km away
  47. 1.66 km W of Cobb, California · 13108 days ago · 3 km deep · 1 km away
  48. 2.04 km SSW of Cobb, California · 13108 days ago · 1 km deep · 6 km away
  49. 1.67 km W of Cobb, California · 13107 days ago · 3 km deep · 1 km away
  50. 2.53 km ESE of Sonoma, California · 13107 days ago · 7 km deep · 68 km away
  51. 1.79 km W of Cobb, California · 13107 days ago · 1 km deep · 2 km away
  52. 2.27 km NW of Cobb, California · 13107 days ago · 1 km deep · 5 km away
  53. 2.83 km W of Roseland, California · 13106 days ago · 6 km deep · 43 km away
  54. 1.67 km WSW of Cobb, California · 13106 days ago · 3 km deep · 1 km away
  55. 1.824 km NE of Potter Valley, California · 13105 days ago · 10 km deep · 78 km away
  56. 1.68 km E of Hidden Valley Lake, California · 13105 days ago · 6 km deep · 30 km away
  57. 2.05 km WSW of Cobb, California · 13104 days ago · 0 km deep · 3 km away
  58. 1.95 km WNW of Cobb, California · 13104 days ago · 1 km deep · 3 km away
  59. 2.08 km WSW of Cobb, California · 13104 days ago · 1 km deep · 2 km away
  60. 2.04 km SW of Cobb, California · 13103 days ago · 1 km deep · 6 km away

The first 60 of 178.

Before

  1. 1.62 km NNE of Talmage, California · 13125 days ago · 5 km deep · 49 km away
  2. 1.62 km NNE of Talmage, California · 13125 days ago · 5 km deep · 48 km away
  3. 1.76 km E of Santa Rosa, California · 13125 days ago · 0 km deep · 43 km away
  4. 1.94 km W of Cobb, California · 13125 days ago · 0 km deep · 3 km away
  5. 1.76 km E of Santa Rosa, California · 13125 days ago · 1 km deep · 43 km away
  6. 1.67 km S of Cobb, California · 13126 days ago · 2 km deep · 11 km away
  7. 1.86 km E of Santa Rosa, California · 13126 days ago · 0 km deep · 43 km away
  8. 2.510 km N of Cloverdale, California · 13126 days ago · -1 km deep · 21 km away
  9. 2.16 km SW of Cobb, California · 13128 days ago · 0 km deep · 5 km away
  10. 2.25 km WSW of Cobb, California · 13129 days ago · 0 km deep · 3 km away
  11. 2.54 km WSW of Cobb, California · 13129 days ago · 2 km deep · 4 km away
  12. 1.712 km ESE of Hidden Valley Lake, California · 13130 days ago · 5 km deep · 33 km away
  13. 1.710 km NW of Cobb, California · 13130 days ago · 0 km deep · 7 km away
  14. 1.66 km ESE of Hopland, California · 13130 days ago · 4 km deep · 26 km away
  15. 1.822 km NNE of Upper Lake, California · 13131 days ago · 6 km deep · 60 km away
  16. 1.73 km NNW of Larkfield-Wikiup, California · 13131 days ago · 5 km deep · 31 km away
  17. 1.84 km E of Cobb, California · 13132 days ago · 39 km deep · 12 km away
  18. 2.14 km W of Cobb, California · 13132 days ago · 0 km deep · 3 km away
  19. 1.55 km WSW of Cobb, California · 13132 days ago · 1 km deep · 3 km away
  20. 1.918 km E of Potter Valley, California · 13132 days ago · 4 km deep · 60 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc201269. Read Sun, Oct 4, 2026, 8:47 AM UTC.