California earthquakes

M2.8 earthquake 4 km S of Cobb, California

A magnitude 2.8 earthquake struck 4 km S of Cobb, California on Sat, Sep 29, 1990, 11:02 AM PDT (18:02 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M3.5 0 km SW of Crockett, 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
2.8 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1990-09-29 18:02:38 UTC
Depth
1.2 km (0.8 mi), shallow
Epicenter
38.782° N, 122.725° 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 0.1 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
37°
Stations used
33

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 171 in the 60 days after this one and 68 in the 30 days before it.

After

  1. 2.25 km WSW of Cobb, California · 13154 days ago · 3 km deep · 5 km away
  2. 1.7near the coast of Northern California · 13153 days ago · 1 km deep · 41 km away
  3. 1.68 km W of Cobb, California · 13153 days ago · 3 km deep · 8 km away
  4. 2.27 km S of Cobb, California · 13153 days ago · 1 km deep · 4 km away
  5. 2.76 km WNW of Cobb, California · 13152 days ago · -1 km deep · 8 km away
  6. 1.69 km W of Cobb, California · 13152 days ago · -1 km deep · 10 km away
  7. 1.75 km SSW of Cobb, California · 13152 days ago · 0 km deep · 2 km away
  8. 2.022 km NE of Potter Valley, California · 13152 days ago · 6 km deep · 80 km away
  9. 1.65 km WSW of Cobb, California · 13152 days ago · 1 km deep · 6 km away
  10. 1.510 km W of Cobb, California · 13151 days ago · 0 km deep · 11 km away
  11. 1.55 km WNW of Cobb, California · 13151 days ago · 0 km deep · 8 km away
  12. 1.94 km WSW of Cobb, California · 13151 days ago · 0 km deep · 5 km away
  13. 1.94 km SW of Cobb, California · 13149 days ago · 0 km deep · 3 km away
  14. 2.06 km S of Cobb, California · 13149 days ago · 1 km deep · 2 km away
  15. 1.66 km W of Cobb, California · 13147 days ago · -1 km deep · 8 km away
  16. 2.29 km W of Cobb, California · 13147 days ago · 0 km deep · 11 km away
  17. 1.79 km W of Cobb, California · 13147 days ago · 0 km deep · 11 km away
  18. 2.25 km WSW of Cobb, California · 13146 days ago · -1 km deep · 5 km away
  19. 1.66 km SW of Cobb, California · 13146 days ago · 0 km deep · 3 km away
  20. 1.85 km W of Cobb, California · 13144 days ago · 0 km deep · 7 km away
  21. 1.610 km SE of Hidden Valley Lake, California · 13144 days ago · 5 km deep · 23 km away
  22. 1.99 km SSE of Elmira, California · 13144 days ago · 5 km deep · 94 km away
  23. 1.97 km W of Cobb, California · 13143 days ago · 3 km deep · 8 km away
  24. 3.47 km WSW of Cobb, California · 13143 days ago · 3 km deep · 7 km away
  25. 1.58 km W of Cobb, California · 13143 days ago · 1 km deep · 9 km away
  26. 1.68 km W of Cobb, California · 13143 days ago · 0 km deep · 10 km away
  27. 2.48 km W of Cobb, California · 13143 days ago · -1 km deep · 9 km away
  28. 1.87 km WSW of Cobb, California · 13143 days ago · 3 km deep · 8 km away
  29. 2.44 km W of Cobb, California · 13143 days ago · 2 km deep · 6 km away
  30. 1.94 km W of Cobb, California · 13143 days ago · 2 km deep · 6 km away
  31. 1.59 km ESE of Hidden Valley Lake, California · 13143 days ago · 5 km deep · 24 km away
  32. 1.84 km ESE of Kenwood, California · 13143 days ago · 1 km deep · 47 km away
  33. 1.76 km ENE of Cloverdale, California · 13142 days ago · 2 km deep · 21 km away
  34. 2.410 km W of Cobb, California · 13142 days ago · 0 km deep · 11 km away
  35. 1.710 km W of Cobb, California · 13142 days ago · 0 km deep · 11 km away
  36. 2.23 km W of Cobb, California · 13142 days ago · 0 km deep · 5 km away
  37. 1.93 km NNE of Cloverdale, California · 13141 days ago · 3 km deep · 25 km away
  38. 1.77 km W of Cobb, California · 13141 days ago · 3 km deep · 8 km away
  39. 3.50 km SW of Crockett, California · 13139 days ago · 12 km deep · 93 km away
  40. 2.31 km W of Crockett, California · 13139 days ago · 10 km deep · 92 km away
  41. 2.1Northern California · 13139 days ago · 1 km deep · 2 km away
  42. 1.86 km ENE of Santa Rosa, California · 13139 days ago · 1 km deep · 37 km away
  43. 1.75 km WSW of Cobb, California · 13138 days ago · 0 km deep · 6 km away
  44. 1.9Northern California · 13138 days ago · 2 km deep · 37 km away
  45. 2.25 km ENE of Santa Rosa, California · 13138 days ago · 1 km deep · 37 km away
  46. 1.88 km W of Cobb, California · 13138 days ago · 2 km deep · 9 km away
  47. 2.16 km ENE of Santa Rosa, California · 13138 days ago · 1 km deep · 37 km away
  48. 1.610 km W of Cobb, California · 13137 days ago · 0 km deep · 11 km away
  49. 2.46 km ENE of Willows, California · 13137 days ago · 17 km deep · 99 km away
  50. 1.68 km ENE of Brooktrails, California · 13137 days ago · 4 km deep · 92 km away
  51. 2.56 km S of Cobb, California · 13136 days ago · 0 km deep · 2 km away
  52. 1.74 km WSW of Cobb, California · 13135 days ago · 1 km deep · 5 km away
  53. 2.87 km WSW of Cobb, California · 13135 days ago · 0 km deep · 7 km away
  54. 1.67 km WSW of Cobb, California · 13135 days ago · 0 km deep · 7 km away
  55. 3.0Northern California · 13134 days ago · 7 km deep · 96 km away
  56. 2.25 km W of Cobb, California · 13134 days ago · 2 km deep · 6 km away
  57. 1.98 km W of Cobb, California · 13133 days ago · 1 km deep · 10 km away
  58. 1.57 km W of Middletown, California · 13133 days ago · -1 km deep · 5 km away
  59. 2.119 km E of Potter Valley, California · 13133 days ago · 6 km deep · 65 km away
  60. 1.918 km E of Potter Valley, California · 13133 days ago · 4 km deep · 65 km away

The first 60 of 171.

Before

  1. 1.710 km NW of Redwood Valley, California · 13154 days ago · 0 km deep · 78 km away
  2. 1.69 km WNW of Cobb, California · 13155 days ago · 2 km deep · 11 km away
  3. 1.77 km WSW of Cobb, California · 13155 days ago · 2 km deep · 7 km away
  4. 2.37 km SW of Cobb, California · 13156 days ago · 0 km deep · 5 km away
  5. 1.93 km SSE of Calpella, California · 13156 days ago · 0 km deep · 62 km away
  6. 2.26 km W of Cobb, California · 13157 days ago · 3 km deep · 8 km away
  7. 1.75 km WSW of Cobb, California · 13157 days ago · 0 km deep · 5 km away
  8. 2.39 km W of Cobb, California · 13158 days ago · 0 km deep · 10 km away
  9. 2.510 km W of Cobb, California · 13158 days ago · 0 km deep · 11 km away
  10. 1.87 km WSW of Cobb, California · 13158 days ago · 3 km deep · 8 km away
  11. 1.810 km W of Cobb, California · 13158 days ago · 0 km deep · 11 km away
  12. 1.63 km W of Cobb, California · 13160 days ago · 1 km deep · 5 km away
  13. 1.99 km W of Cobb, California · 13160 days ago · 0 km deep · 11 km away
  14. 2.47 km W of Cobb, California · 13162 days ago · 0 km deep · 8 km away
  15. 2.97 km WSW of Cobb, California · 13162 days ago · 1 km deep · 7 km away
  16. 1.87 km WSW of Cobb, California · 13162 days ago · 1 km deep · 7 km away
  17. 1.67 km WSW of Cobb, California · 13162 days ago · 0 km deep · 7 km away
  18. 1.97 km WSW of Cobb, California · 13162 days ago · 1 km deep · 8 km away
  19. 3.37 km WSW of Cobb, California · 13162 days ago · 0 km deep · 7 km away
  20. 1.88 km W of Cobb, California · 13162 days ago · -1 km deep · 10 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc164699. Read Sun, Oct 4, 2026, 12:10 PM UTC.