California earthquakes

M2.7 earthquake 8 km W of Cobb, California

A magnitude 2.7 earthquake struck 8 km W of Cobb, California on Mon, Feb 25, 1985, 7:29 PM PST (03:29 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
2.7 (md), micro
Local time
UTC
1985-02-26 03:29:23 UTC
Depth
0.1 km (0.0 mi), shallow
Epicenter
38.819° N, 122.815° 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, 0.3 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
34°
Stations used
31

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 187 in the 60 days after this one and 107 in the 30 days before it.

After

  1. 1.87 km W of Cobb, California · 15191 days ago · -1 km deep · 1 km away
  2. 3.110 km NW of Cobb, California · 15191 days ago · 8 km deep · 8 km away
  3. 2.34 km WSW of Cobb, California · 15190 days ago · 1 km deep · 4 km away
  4. 2.24 km NNE of Clearlake, California · 15190 days ago · 1 km deep · 27 km away
  5. 2.04 km NNE of Clearlake, California · 15190 days ago · 1 km deep · 26 km away
  6. 1.79 km ESE of Black Point-Green Point, California · 15190 days ago · 14 km deep · 89 km away
  7. 1.66 km W of Cobb, California · 15190 days ago · 3 km deep · 2 km away
  8. 1.86 km NW of North Lakeport, California · 15190 days ago · 1 km deep · 36 km away
  9. 1.86 km W of Cobb, California · 15189 days ago · 3 km deep · 2 km away
  10. 1.87 km WSW of Cobb, California · 15189 days ago · 1 km deep · 2 km away
  11. 2.45 km SW of Cobb, California · 15188 days ago · 2 km deep · 5 km away
  12. 1.76 km NW of North Lakeport, California · 15188 days ago · 5 km deep · 36 km away
  13. 2.38 km W of Cobb, California · 15188 days ago · 0 km deep · 1 km away
  14. 1.98 km W of Cobb, California · 15188 days ago · 0 km deep · 1 km away
  15. 2.52 km SSE of Clear Lake Riviera, California · 15188 days ago · 1 km deep · 16 km away
  16. 1.90 km NNE of Clearlake, California · 15188 days ago · 4 km deep · 23 km away
  17. 1.5Northern California · 15188 days ago · -1 km deep · 14 km away
  18. 2.15 km SW of Cobb, California · 15188 days ago · 1 km deep · 6 km away
  19. 1.67 km W of Cobb, California · 15187 days ago · 3 km deep · 1 km away
  20. 1.64 km WSW of Cobb, California · 15187 days ago · 1 km deep · 4 km away
  21. 1.53 km ESE of Kenwood, California · 15187 days ago · 8 km deep · 54 km away
  22. 1.77 km W of Cobb, California · 15187 days ago · 3 km deep · 1 km away
  23. 2.02 km SE of Clear Lake Riviera, California · 15186 days ago · 2 km deep · 16 km away
  24. 2.77 km WSW of Cobb, California · 15185 days ago · 2 km deep · 1 km away
  25. 1.87 km WSW of Cobb, California · 15185 days ago · 2 km deep · 1 km away
  26. 3.1Northern California · 15184 days ago · 3 km deep · 1 km away
  27. 2.46 km NNE of Cloverdale, California · 15184 days ago · 18 km deep · 15 km away
  28. 1.56 km W of Cobb, California · 15184 days ago · 3 km deep · 1 km away
  29. 1.67 km W of Cobb, California · 15184 days ago · 4 km deep · 1 km away
  30. 1.7Northern California · 15184 days ago · 5 km deep · 13 km away
  31. 2.82 km SE of Clear Lake Riviera, California · 15183 days ago · 2 km deep · 16 km away
  32. 3.52 km SE of Clear Lake Riviera, California · 15183 days ago · 2 km deep · 16 km away
  33. 2.94 km SE of Clear Lake Riviera, California · 15183 days ago · -1 km deep · 16 km away
  34. 1.82 km SE of Clear Lake Riviera, California · 15183 days ago · 1 km deep · 17 km away
  35. 1.92 km S of Clear Lake Riviera, California · 15183 days ago · -1 km deep · 15 km away
  36. 1.93 km SE of Clear Lake Riviera, California · 15183 days ago · 2 km deep · 16 km away
  37. 1.92 km ESE of Clear Lake Riviera, California · 15183 days ago · 4 km deep · 18 km away
  38. 1.63 km SSE of Clear Lake Riviera, California · 15183 days ago · 2 km deep · 16 km away
  39. 1.61 km NNE of Clear Lake Riviera, California · 15183 days ago · 4 km deep · 19 km away
  40. 2.22 km SE of Clear Lake Riviera, California · 15183 days ago · 2 km deep · 16 km away
  41. 1.83 km SSW of Clear Lake Riviera, California · 15183 days ago · -1 km deep · 13 km away
  42. 2.52 km SE of Clear Lake Riviera, California · 15183 days ago · 2 km deep · 16 km away
  43. 2.11 km SSE of Clear Lake Riviera, California · 15183 days ago · 0 km deep · 16 km away
  44. 1.92 km SSE of Clear Lake Riviera, California · 15183 days ago · 0 km deep · 16 km away
  45. 1.82 km SSE of Hopland, California · 15183 days ago · 20 km deep · 29 km away
  46. 1.82 km SSE of Clear Lake Riviera, California · 15183 days ago · 1 km deep · 16 km away
  47. 2.02 km SSE of Clear Lake Riviera, California · 15183 days ago · 2 km deep · 16 km away
  48. 2.83 km SSE of Clear Lake Riviera, California · 15183 days ago · 2 km deep · 16 km away
  49. 2.83 km SSE of Clear Lake Riviera, California · 15183 days ago · 2 km deep · 16 km away
  50. 2.53 km S of Clear Lake Riviera, California · 15183 days ago · 0 km deep · 14 km away
  51. 1.63 km ESE of Clear Lake Riviera, California · 15183 days ago · 2 km deep · 18 km away
  52. 2.13 km SSE of Clear Lake Riviera, California · 15183 days ago · 3 km deep · 16 km away
  53. 1.52 km SSE of Clear Lake Riviera, California · 15183 days ago · 2 km deep · 16 km away
  54. 1.62 km SE of Clear Lake Riviera, California · 15183 days ago · 4 km deep · 17 km away
  55. 1.52 km SSE of Clear Lake Riviera, California · 15183 days ago · 3 km deep · 16 km away
  56. 2.02 km SE of Clear Lake Riviera, California · 15183 days ago · 2 km deep · 16 km away
  57. 1.812 km ENE of Sea Ranch, California · 15183 days ago · 4 km deep · 45 km away
  58. 1.86 km W of Cobb, California · 15183 days ago · 2 km deep · 1 km away
  59. 1.6Northern California · 15183 days ago · 3 km deep · 16 km away
  60. 1.83 km ESE of Clear Lake Riviera, California · 15183 days ago · -1 km deep · 18 km away

The first 60 of 187.

Before

  1. 2.03 km W of Forestville, California · 15191 days ago · 0 km deep · 40 km away
  2. 1.76 km ENE of Santa Rosa, California · 15192 days ago · 10 km deep · 42 km away
  3. 2.47 km W of Cobb, California · 15192 days ago · 3 km deep · 0 km away
  4. 2.16 km W of Cobb, California · 15193 days ago · 3 km deep · 1 km away
  5. 1.5Northern California · 15193 days ago · 1 km deep · 5 km away
  6. 1.67 km WSW of Cobb, California · 15193 days ago · 1 km deep · 2 km away
  7. 2.17 km WSW of Cobb, California · 15194 days ago · 4 km deep · 3 km away
  8. 1.56 km WSW of Cobb, California · 15194 days ago · 1 km deep · 3 km away
  9. 2.04 km SW of Clear Lake Riviera, California · 15194 days ago · 2 km deep · 13 km away
  10. 1.86 km W of Cobb, California · 15195 days ago · 2 km deep · 2 km away
  11. 2.03 km NNE of Cloverdale, California · 15195 days ago · 3 km deep · 16 km away
  12. 2.25 km W of Cobb, California · 15195 days ago · 0 km deep · 2 km away
  13. 1.9Northern California · 15196 days ago · 3 km deep · 13 km away
  14. 1.66 km WSW of Cobb, California · 15196 days ago · 1 km deep · 2 km away
  15. 1.68 km W of Cobb, California · 15196 days ago · 0 km deep · 1 km away
  16. 2.53 km SSW of Cobb, California · 15196 days ago · 1 km deep · 7 km away
  17. 1.95 km SW of Cobb, California · 15196 days ago · 0 km deep · 4 km away
  18. 2.113 km N of Upper Lake, California · 15197 days ago · 12 km deep · 53 km away
  19. 1.65 km SW of Cobb, California · 15197 days ago · 1 km deep · 5 km away
  20. 2.05 km E of Hopland, California · 15197 days ago · 0 km deep · 27 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc42090. Read Wed, Sep 30, 2026, 4:48 AM UTC.