California earthquakes

M1.5 earthquake 9 km WSW of Cobb, California

A magnitude 1.5 earthquake struck 9 km WSW of Cobb, California on Mon, Oct 12, 1981, 9:27 AM PDT (16:27 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M3.5 15 km N of Brooktrails, 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
1.5 (md), micro
Local time
UTC
1981-10-12 16:27:52 UTC
Depth
1.1 km (0.7 mi), shallow
Epicenter
38.803° N, 122.835° 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 0.6 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.52
Depth from
From location
Station coverage gap
153°
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 122 in the 60 days after this one and 71 in the 30 days before it.

After

  1. 1.58 km NNE of Cloverdale, California · 16422 days ago · 3 km deep · 15 km away
  2. 1.67 km W of Cobb, California · 16421 days ago · 1 km deep · 3 km away
  3. 1.74 km E of Geyserville, California · 16420 days ago · 5 km deep · 11 km away
  4. 1.69 km WSW of Cobb, California · 16420 days ago · 1 km deep · 1 km away
  5. 1.84 km SSE of Dillon Beach, California · 16420 days ago · 2 km deep · 66 km away
  6. 1.62 km E of Larkfield-Wikiup, California · 16419 days ago · 8 km deep · 34 km away
  7. 1.84 km E of Geyserville, California · 16419 days ago · 3 km deep · 11 km away
  8. 1.55 km SSW of Cobb, California · 16419 days ago · -1 km deep · 9 km away
  9. 1.89 km WSW of Cobb, California · 16417 days ago · 1 km deep · 1 km away
  10. 1.57 km WSW of Cobb, California · 16416 days ago · 2 km deep · 3 km away
  11. 2.35 km SW of Cobb, California · 16416 days ago · 0 km deep · 6 km away
  12. 1.68 km ENE of Brooktrails, California · 16413 days ago · 8 km deep · 86 km away
  13. 3.515 km N of Brooktrails, California · 16412 days ago · 9 km deep · 97 km away
  14. 2.29 km WSW of Cobb, California · 16411 days ago · 0 km deep · 1 km away
  15. 1.77 km WSW of Cobb, California · 16407 days ago · 1 km deep · 2 km away
  16. 1.65 km SSW of Cobb, California · 16406 days ago · 0 km deep · 9 km away
  17. 1.66 km W of Cobb, California · 16406 days ago · 4 km deep · 4 km away
  18. 1.818 km N of Moskowite Corner, California · 16406 days ago · 8 km deep · 59 km away
  19. 1.56 km WNW of Cobb, California · 16405 days ago · 1 km deep · 5 km away
  20. 2.417 km N of Moskowite Corner, California · 16405 days ago · 9 km deep · 59 km away
  21. 2.518 km N of Moskowite Corner, California · 16405 days ago · 8 km deep · 58 km away
  22. 1.59 km WSW of Cobb, California · 16405 days ago · 1 km deep · 0 km away
  23. 2.07 km W of Cobb, California · 16405 days ago · 1 km deep · 3 km away
  24. 3.17 km W of Cobb, California · 16405 days ago · 1 km deep · 3 km away
  25. 2.26 km W of Cobb, California · 16405 days ago · 0 km deep · 4 km away
  26. 2.65 km SW of Cobb, California · 16404 days ago · 0 km deep · 5 km away
  27. 2.66 km N of Robbins, California · 16404 days ago · 21 km deep · 100 km away
  28. 1.610 km WSW of Cobb, California · 16403 days ago · 3 km deep · 0 km away
  29. 1.89 km WSW of Cobb, California · 16403 days ago · 1 km deep · 1 km away
  30. 3.19 km WSW of Cobb, California · 16403 days ago · 1 km deep · 1 km away
  31. 3.39 km WSW of Cobb, California · 16403 days ago · 1 km deep · 1 km away
  32. 1.98 km WSW of Cobb, California · 16403 days ago · 1 km deep · 1 km away
  33. 1.73 km S of Green Valley, California · 16401 days ago · 9 km deep · 87 km away
  34. 1.64 km SSE of Clear Lake Riviera, California · 16400 days ago · 3 km deep · 18 km away
  35. 1.99 km ESE of Willits, California · 16397 days ago · 7 km deep · 75 km away
  36. 2.523 km W of Elk Creek, California · 16397 days ago · 6 km deep · 93 km away
  37. 2.26 km W of Cobb, California · 16395 days ago · 3 km deep · 4 km away
  38. 1.77 km E of Geyserville, California · 16393 days ago · 6 km deep · 12 km away
  39. 1.85 km SW of Cobb, California · 16393 days ago · 0 km deep · 5 km away
  40. 1.73 km W of Forestville, California · 16391 days ago · 0 km deep · 38 km away
  41. 1.8Northern California · 16389 days ago · 0 km deep · 6 km away
  42. 1.99 km WSW of Cobb, California · 16389 days ago · 2 km deep · 1 km away
  43. 2.57 km WSW of Cobb, California · 16389 days ago · 1 km deep · 2 km away
  44. 2.85 km SW of Cobb, California · 16388 days ago · 0 km deep · 6 km away
  45. 1.66 km WSW of Cobb, California · 16388 days ago · -1 km deep · 4 km away
  46. 2.15 km SW of Cobb, California · 16387 days ago · 0 km deep · 6 km away
  47. 1.67 km W of Cobb, California · 16387 days ago · 1 km deep · 3 km away
  48. 2.07 km W of Cobb, California · 16387 days ago · -1 km deep · 3 km away
  49. 2.06 km WSW of Cobb, California · 16387 days ago · 1 km deep · 4 km away
  50. 2.06 km WSW of Cobb, California · 16387 days ago · 1 km deep · 3 km away
  51. 1.96 km WSW of Cobb, California · 16387 days ago · 1 km deep · 4 km away
  52. 1.78 km SE of Willits, California · 16385 days ago · 3 km deep · 73 km away
  53. 1.68 km E of Willits, California · 16385 days ago · 8 km deep · 76 km away
  54. 1.75 km WSW of Cobb, California · 16384 days ago · 0 km deep · 4 km away
  55. 1.95 km WSW of Kenwood, California · 16383 days ago · 9 km deep · 50 km away
  56. 2.09 km NNE of Cloverdale, California · 16382 days ago · 1 km deep · 15 km away
  57. 1.57 km WSW of Cobb, California · 16381 days ago · 2 km deep · 2 km away
  58. 1.94 km W of Cobb, California · 16381 days ago · 1 km deep · 5 km away
  59. 2.16 km WSW of Cobb, California · 16381 days ago · 0 km deep · 4 km away
  60. 2.46 km WSW of Cobb, California · 16380 days ago · 1 km deep · 4 km away

The first 60 of 122.

Before

  1. 1.94 km WSW of Cobb, California · 16422 days ago · 1 km deep · 6 km away
  2. 2.014 km N of Moskowite Corner, California · 16422 days ago · 0 km deep · 62 km away
  3. 1.717 km N of Moskowite Corner, California · 16422 days ago · 8 km deep · 59 km away
  4. 1.618 km NE of Upper Lake, California · 16423 days ago · 5 km deep · 56 km away
  5. 3.1Northern California · 16423 days ago · 1 km deep · 4 km away
  6. 1.84 km E of Geyserville, California · 16423 days ago · 4 km deep · 11 km away
  7. 1.69 km WSW of Cobb, California · 16423 days ago · 3 km deep · 1 km away
  8. 2.08 km W of Cobb, California · 16423 days ago · 0 km deep · 1 km away
  9. 2.84 km E of Geyserville, California · 16423 days ago · 5 km deep · 10 km away
  10. 1.89 km ENE of Hidden Valley Lake, California · 16424 days ago · 7 km deep · 33 km away
  11. 1.65 km WSW of Cobb, California · 16424 days ago · 0 km deep · 4 km away
  12. 1.79 km W of Cobb, California · 16424 days ago · 1 km deep · 1 km away
  13. 1.84 km WSW of Kenwood, California · 16425 days ago · 8 km deep · 49 km away
  14. 2.09 km ENE of Hidden Valley Lake, California · 16425 days ago · 8 km deep · 32 km away
  15. 3.111 km NE of Hidden Valley Lake, California · 16425 days ago · 11 km deep · 34 km away
  16. 2.46 km W of Cobb, California · 16425 days ago · 1 km deep · 4 km away
  17. 3.15 km W of Cobb, California · 16425 days ago · 1 km deep · 5 km away
  18. 1.85 km W of Cobb, California · 16425 days ago · 0 km deep · 5 km away
  19. 1.66 km W of Cobb, California · 16425 days ago · 1 km deep · 3 km away
  20. 2.27 km WSW of Cobb, California · 16426 days ago · 0 km deep · 3 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1068569. Read Mon, Sep 28, 2026, 2:32 PM UTC.