California earthquakes

M1.8 earthquake 10 km W of Cobb, California

A magnitude 1.8 earthquake struck 10 km W of Cobb, California on Thu, Jul 5, 1990, 9:50 AM PDT (16:50 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M4.2 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
1.8 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1990-07-05 16:50:10 UTC
Depth
0.9 km (0.5 mi), shallow
Epicenter
38.819° N, 122.841° 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, 0.6 km in depth
Magnitude uncertainty
±0.21
Depth from
From location
Station coverage gap
64°
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 153 in the 60 days after this one and 89 in the 30 days before it.

After

  1. 2.05 km WSW of Cobb, California · 13239 days ago · 3 km deep · 5 km away
  2. 2.55 km W of Cobb, California · 13239 days ago · 2 km deep · 4 km away
  3. 1.95 km W of Cobb, California · 13238 days ago · 0 km deep · 4 km away
  4. 1.99 km E of Hidden Valley Lake, California · 13237 days ago · 7 km deep · 34 km away
  5. 2.04 km WNW of Potter Valley, California · 13237 days ago · 2 km deep · 64 km away
  6. 1.97 km WSW of Cobb, California · 13236 days ago · 3 km deep · 4 km away
  7. 1.615 km N of Upper Lake, California · 13236 days ago · 7 km deep · 55 km away
  8. 1.77 km W of Cobb, California · 13236 days ago · 0 km deep · 3 km away
  9. 1.79 km ESE of Hopland, California · 13235 days ago · 2 km deep · 20 km away
  10. 2.310 km N of Cloverdale, California · 13235 days ago · 2 km deep · 17 km away
  11. 1.66 km WNW of Cobb, California · 13235 days ago · 1 km deep · 4 km away
  12. 1.66 km W of Cobb, California · 13235 days ago · 1 km deep · 4 km away
  13. 1.73 km W of Cobb, California · 13235 days ago · 0 km deep · 7 km away
  14. 1.77 km W of Cobb, California · 13235 days ago · 3 km deep · 3 km away
  15. 1.66 km WSW of Kenwood, California · 13234 days ago · 7 km deep · 52 km away
  16. 1.59 km S of Cobb, California · 13234 days ago · 4 km deep · 12 km away
  17. 1.98 km W of Cobb, California · 13234 days ago · 0 km deep · 2 km away
  18. 3.57 km WSW of Cobb, California · 13234 days ago · 0 km deep · 3 km away
  19. 1.88 km S of Cobb, California · 13234 days ago · 4 km deep · 12 km away
  20. 3.06 km WSW of Kenwood, California · 13234 days ago · 8 km deep · 51 km away
  21. 2.221 km NE of Potter Valley, California · 13234 days ago · 7 km deep · 71 km away
  22. 1.722 km NE of Potter Valley, California · 13234 days ago · 6 km deep · 70 km away
  23. 1.67 km ENE of Brooktrails, California · 13233 days ago · 10 km deep · 83 km away
  24. 2.48 km WSW of Cobb, California · 13233 days ago · 0 km deep · 3 km away
  25. 3.08 km WSW of Cobb, California · 13233 days ago · 0 km deep · 3 km away
  26. 2.28 km WSW of Cobb, California · 13233 days ago · -1 km deep · 3 km away
  27. 1.97 km WSW of Calistoga, California · 13232 days ago · 1 km deep · 33 km away
  28. 3.17 km ENE of Brooktrails, California · 13231 days ago · -1 km deep · 82 km away
  29. 2.36 km S of Hopland, California · 13230 days ago · 7 km deep · 26 km away
  30. 1.67 km W of Middletown, California · 13230 days ago · 1 km deep · 14 km away
  31. 1.77 km N of Geyserville, California · 13230 days ago · 4 km deep · 7 km away
  32. 1.77 km N of Geyserville, California · 13230 days ago · 4 km deep · 7 km away
  33. 1.64 km W of Cobb, California · 13228 days ago · -1 km deep · 5 km away
  34. 1.96 km WSW of Cobb, California · 13228 days ago · -1 km deep · 5 km away
  35. 1.5Northern California · 13227 days ago · 0 km deep · 11 km away
  36. 1.510 km W of Cobb, California · 13227 days ago · 1 km deep · 0 km away
  37. 1.85 km WSW of Cobb, California · 13227 days ago · -1 km deep · 6 km away
  38. 2.27 km N of Geyserville, California · 13226 days ago · 4 km deep · 7 km away
  39. 1.95 km W of Cobb, California · 13226 days ago · 2 km deep · 5 km away
  40. 1.99 km N of Hopland, California · 13226 days ago · 6 km deep · 36 km away
  41. 1.87 km N of Geyserville, California · 13226 days ago · 4 km deep · 7 km away
  42. 1.92 km SSW of Cobb, California · 13225 days ago · 2 km deep · 9 km away
  43. 1.79 km WNW of Cobb, California · 13225 days ago · 2 km deep · 3 km away
  44. 2.08 km NE of Hopland, California · 13225 days ago · 5 km deep · 30 km away
  45. 1.83 km W of Cobb, California · 13224 days ago · 0 km deep · 6 km away
  46. 1.921 km NE of Potter Valley, California · 13224 days ago · 7 km deep · 71 km away
  47. 1.60 km E of Cloverdale, California · 13224 days ago · 4 km deep · 15 km away
  48. 2.46 km SW of Cobb, California · 13223 days ago · 3 km deep · 6 km away
  49. 2.16 km WSW of Cobb, California · 13222 days ago · 1 km deep · 4 km away
  50. 1.73 km NE of Clearlake, California · 13222 days ago · -1 km deep · 28 km away
  51. 2.21 km W of Larkfield-Wikiup, California · 13222 days ago · 3 km deep · 34 km away
  52. 1.66 km W of Cobb, California · 13221 days ago · 1 km deep · 4 km away
  53. 2.89 km W of Cobb, California · 13221 days ago · 1 km deep · 1 km away
  54. 1.57 km S of Temelec, California · 13220 days ago · 5 km deep · 76 km away
  55. 2.716 km NNE of Nice, California · 13220 days ago · 5 km deep · 49 km away
  56. 2.16 km W of Cobb, California · 13220 days ago · -1 km deep · 3 km away
  57. 2.05 km SW of Cobb, California · 13219 days ago · 0 km deep · 7 km away
  58. 1.69 km W of Cobb, California · 13218 days ago · 1 km deep · 2 km away
  59. 1.59 km NE of Cloverdale, California · 13218 days ago · 3 km deep · 11 km away
  60. 1.56 km S of Cobb, California · 13217 days ago · 1 km deep · 12 km away

The first 60 of 153.

Before

  1. 1.54 km W of Cobb, California · 13241 days ago · 0 km deep · 6 km away
  2. 1.88 km W of Cobb, California · 13243 days ago · 1 km deep · 2 km away
  3. 1.58 km WNW of Cobb, California · 13243 days ago · 2 km deep · 3 km away
  4. 3.08 km W of Cobb, California · 13243 days ago · 0 km deep · 3 km away
  5. 1.88 km W of Cobb, California · 13243 days ago · 1 km deep · 3 km away
  6. 2.96 km W of Allendale, California · 13243 days ago · 2 km deep · 82 km away
  7. 1.78 km WSW of Cobb, California · 13243 days ago · 0 km deep · 2 km away
  8. 1.95 km WSW of Cobb, California · 13244 days ago · 0 km deep · 5 km away
  9. 2.29 km WNW of Cobb, California · 13244 days ago · 2 km deep · 3 km away
  10. 2.09 km SSE of Potter Valley, California · 13244 days ago · 4 km deep · 51 km away
  11. 1.88 km W of Cobb, California · 13244 days ago · 0 km deep · 2 km away
  12. 2.83 km SSW of Cobb, California · 13244 days ago · 1 km deep · 9 km away
  13. 2.05 km W of Cobb, California · 13245 days ago · 2 km deep · 4 km away
  14. 1.69 km W of Cobb, California · 13245 days ago · 2 km deep · 2 km away
  15. 2.46 km SW of Cobb, California · 13245 days ago · -1 km deep · 6 km away
  16. 2.47 km WSW of Cobb, California · 13246 days ago · 2 km deep · 4 km away
  17. 1.910 km W of Cobb, California · 13246 days ago · 0 km deep · 0 km away
  18. 1.810 km W of Cobb, California · 13246 days ago · -1 km deep · 0 km away
  19. 2.59 km W of Cobb, California · 13246 days ago · 1 km deep · 1 km away
  20. 1.93 km SW of Cobb, California · 13246 days ago · 2 km deep · 9 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc160518. Read Sun, Oct 4, 2026, 8:30 PM UTC.