California earthquakes

M1.8 earthquake 4 km W of Cobb, California

A magnitude 1.8 earthquake struck 4 km W of Cobb, California on Sun, Feb 10, 1985, 8:29 AM PST (16:29 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M4.1 11 km NNE of Cloverdale, 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), micro
Local time
UTC
1985-02-10 16:29:56 UTC
Depth
0.1 km (0.1 mi), shallow
Epicenter
38.819° N, 122.779° 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
±0.09
Depth from
From location
Station coverage gap
55°
Stations used
14

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 189 in the 60 days after this one and 123 in the 30 days before it.

After

  1. 1.67 km W of Cobb, California · 15206 days ago · 3 km deep · 2 km away
  2. 2.14 km WSW of Cobb, California · 15206 days ago · 1 km deep · 2 km away
  3. 1.813 km N of Brooktrails, California · 15205 days ago · 4 km deep · 98 km away
  4. 2.15 km SW of Cobb, California · 15205 days ago · 1 km deep · 4 km away
  5. 1.56 km W of Cobb, California · 15205 days ago · 3 km deep · 2 km away
  6. 2.76 km WNW of Cobb, California · 15205 days ago · 0 km deep · 2 km away
  7. 1.67 km N of Cloverdale, California · 15205 days ago · 1 km deep · 22 km away
  8. 1.56 km W of Cobb, California · 15204 days ago · 1 km deep · 1 km away
  9. 1.66 km W of Cobb, California · 15204 days ago · 3 km deep · 1 km away
  10. 1.68 km WSW of Upper Lake, California · 15203 days ago · 4 km deep · 39 km away
  11. 1.96 km W of Cobb, California · 15203 days ago · 3 km deep · 1 km away
  12. 2.122 km NNE of Potter Valley, California · 15202 days ago · 7 km deep · 77 km away
  13. 1.8Northern California · 15202 days ago · 1 km deep · 3 km away
  14. 1.66 km WSW of Cobb, California · 15202 days ago · 3 km deep · 2 km away
  15. 1.86 km WSW of Cobb, California · 15202 days ago · 1 km deep · 2 km away
  16. 3.46 km WSW of Cobb, California · 15201 days ago · 0 km deep · 3 km away
  17. 2.07 km WSW of Cobb, California · 15201 days ago · 0 km deep · 3 km away
  18. 2.922 km NNE of Potter Valley, California · 15201 days ago · 7 km deep · 77 km away
  19. 2.022 km NNE of Potter Valley, California · 15201 days ago · 7 km deep · 77 km away
  20. 1.68 km W of Cobb, California · 15201 days ago · 0 km deep · 4 km away
  21. 1.75 km SW of Cobb, California · 15200 days ago · 1 km deep · 4 km away
  22. 2.37 km W of Cobb, California · 15200 days ago · 1 km deep · 2 km away
  23. 2.75 km SW of Cobb, California · 15200 days ago · 1 km deep · 4 km away
  24. 2.07 km W of Cobb, California · 15200 days ago · 3 km deep · 3 km away
  25. 1.69 km ESE of Hidden Valley Lake, California · 15200 days ago · 6 km deep · 29 km away
  26. 1.81 km SE of Clearlake, California · 15200 days ago · 9 km deep · 20 km away
  27. 2.17 km W of Cobb, California · 15199 days ago · 4 km deep · 3 km away
  28. 1.88 km WSW of Cobb, California · 15198 days ago · 3 km deep · 4 km away
  29. 1.63 km ENE of Redwood Valley, California · 15198 days ago · 4 km deep · 61 km away
  30. 1.96 km W of Cobb, California · 15198 days ago · 4 km deep · 1 km away
  31. 1.66 km WSW of Cobb, California · 15198 days ago · 3 km deep · 2 km away
  32. 2.36 km WSW of Cobb, California · 15198 days ago · 3 km deep · 2 km away
  33. 1.75 km SW of Cobb, California · 15198 days ago · 1 km deep · 4 km away
  34. 2.08 km WSW of Cobb, California · 15198 days ago · 3 km deep · 4 km away
  35. 2.05 km E of Hopland, California · 15197 days ago · 0 km deep · 29 km away
  36. 1.65 km SW of Cobb, California · 15196 days ago · 1 km deep · 4 km away
  37. 2.113 km N of Upper Lake, California · 15196 days ago · 12 km deep · 53 km away
  38. 1.95 km SW of Cobb, California · 15196 days ago · 0 km deep · 3 km away
  39. 2.53 km SSW of Cobb, California · 15196 days ago · 1 km deep · 4 km away
  40. 1.68 km W of Cobb, California · 15196 days ago · 0 km deep · 4 km away
  41. 1.66 km WSW of Cobb, California · 15195 days ago · 1 km deep · 2 km away
  42. 1.9Northern California · 15195 days ago · 3 km deep · 12 km away
  43. 2.25 km W of Cobb, California · 15195 days ago · 0 km deep · 1 km away
  44. 2.03 km NNE of Cloverdale, California · 15195 days ago · 3 km deep · 20 km away
  45. 1.86 km W of Cobb, California · 15195 days ago · 2 km deep · 2 km away
  46. 2.04 km SW of Clear Lake Riviera, California · 15194 days ago · 2 km deep · 12 km away
  47. 1.56 km WSW of Cobb, California · 15193 days ago · 1 km deep · 3 km away
  48. 2.17 km WSW of Cobb, California · 15193 days ago · 4 km deep · 4 km away
  49. 1.67 km WSW of Cobb, California · 15193 days ago · 1 km deep · 3 km away
  50. 1.5Northern California · 15193 days ago · 1 km deep · 3 km away
  51. 2.16 km W of Cobb, California · 15192 days ago · 3 km deep · 2 km away
  52. 2.47 km W of Cobb, California · 15192 days ago · 3 km deep · 3 km away
  53. 1.76 km ENE of Santa Rosa, California · 15192 days ago · 10 km deep · 42 km away
  54. 2.03 km W of Forestville, California · 15191 days ago · 0 km deep · 41 km away
  55. 2.78 km W of Cobb, California · 15191 days ago · 0 km deep · 3 km away
  56. 1.87 km W of Cobb, California · 15191 days ago · -1 km deep · 3 km away
  57. 3.110 km NW of Cobb, California · 15191 days ago · 8 km deep · 8 km away
  58. 2.34 km WSW of Cobb, California · 15190 days ago · 1 km deep · 2 km away
  59. 2.24 km NNE of Clearlake, California · 15190 days ago · 1 km deep · 25 km away
  60. 2.04 km NNE of Clearlake, California · 15190 days ago · 1 km deep · 24 km away

The first 60 of 189.

Before

  1. 2.53 km NNE of Clearlake, California · 15206 days ago · 0 km deep · 24 km away
  2. 2.07 km WSW of Cobb, California · 15207 days ago · 2 km deep · 3 km away
  3. 2.17 km WSW of Cobb, California · 15207 days ago · 2 km deep · 3 km away
  4. 1.94 km W of Cobb, California · 15207 days ago · 0 km deep · 0 km away
  5. 1.74 km NNE of Lucerne, California · 15207 days ago · 17 km deep · 35 km away
  6. 1.512 km S of Kelseyville, California · 15207 days ago · -1 km deep · 9 km away
  7. 2.25 km SW of Cobb, California · 15208 days ago · 0 km deep · 3 km away
  8. 2.45 km WSW of Cobb, California · 15208 days ago · 0 km deep · 3 km away
  9. 1.613 km SE of Hidden Valley Lake, California · 15209 days ago · -1 km deep · 32 km away
  10. 2.08 km W of Cobb, California · 15209 days ago · 1 km deep · 4 km away
  11. 1.62 km SW of Cobb, California · 15209 days ago · 4 km deep · 4 km away
  12. 2.03 km SW of Cobb, California · 15209 days ago · 1 km deep · 4 km away
  13. 1.69 km E of Willits, California · 15210 days ago · 8 km deep · 76 km away
  14. 1.85 km W of Cobb, California · 15210 days ago · 0 km deep · 1 km away
  15. 1.66 km W of Cobb, California · 15210 days ago · 3 km deep · 2 km away
  16. 1.611 km ESE of Hidden Valley Lake, California · 15210 days ago · 0 km deep · 31 km away
  17. 2.25 km SW of Cobb, California · 15210 days ago · 0 km deep · 4 km away
  18. 1.74 km W of Cobb, California · 15210 days ago · -1 km deep · 0 km away
  19. 1.68 km ENE of Willits, California · 15211 days ago · 9 km deep · 81 km away
  20. 1.97 km WSW of Cobb, California · 15211 days ago · 1 km deep · 3 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1125763. Read Tue, Sep 29, 2026, 10:59 PM UTC.