California earthquakes

M2.1 earthquake 6 km W of Cobb, California

A magnitude 2.1 earthquake struck 6 km W of Cobb, California on Tue, Sep 22, 1981, 12:52 AM PDT (07:52 UTC), 4 km (2 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.

Open the live map with earthquakes

The earthquake

Magnitude
2.1 (md), micro
Local time
UTC
1981-09-22 07:52:32 UTC
Depth
3.6 km (2.3 mi), shallow
Epicenter
38.817° N, 122.797° 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, 0.2 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
38°
Stations used
35

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 116 in the 60 days after this one and 40 in the 30 days before it.

After

  1. 1.714 km NNW of Moskowite Corner, California · 16443 days ago · 0 km deep · 54 km away
  2. 2.04 km NE of Princeton, California · 16442 days ago · 24 km deep · 99 km away
  3. 2.87 km NE of Healdsburg, California · 16442 days ago · 6 km deep · 17 km away
  4. 2.07 km W of Cobb, California · 16442 days ago · 2 km deep · 1 km away
  5. 1.98 km W of Cobb, California · 16441 days ago · 0 km deep · 2 km away
  6. 2.08 km W of Cobb, California · 16441 days ago · 0 km deep · 2 km away
  7. 1.77 km W of Cobb, California · 16441 days ago · 2 km deep · 1 km away
  8. 1.810 km E of Hidden Valley Lake, California · 16441 days ago · 7 km deep · 31 km away
  9. 2.67 km WSW of Cobb, California · 16441 days ago · 1 km deep · 1 km away
  10. 1.65 km SW of Cobb, California · 16440 days ago · 0 km deep · 4 km away
  11. 1.88 km E of Hopland, California · 16439 days ago · 7 km deep · 25 km away
  12. 2.14 km WSW of Cobb, California · 16439 days ago · 1 km deep · 3 km away
  13. 1.54 km WSW of Cobb, California · 16439 days ago · 1 km deep · 3 km away
  14. 2.121 km ENE of Potter Valley, California · 16438 days ago · 0 km deep · 66 km away
  15. 1.62 km E of Calpella, California · 16438 days ago · 5 km deep · 57 km away
  16. 1.720 km NNE of Upper Lake, California · 16437 days ago · 7 km deep · 58 km away
  17. 1.66 km WSW of Cobb, California · 16437 days ago · 2 km deep · 1 km away
  18. 1.86 km NE of Hopland, California · 16436 days ago · 1 km deep · 32 km away
  19. 2.77 km NE of Healdsburg, California · 16435 days ago · 5 km deep · 17 km away
  20. 1.77 km NE of Healdsburg, California · 16435 days ago · 5 km deep · 17 km away
  21. 1.77 km W of Cobb, California · 16435 days ago · 0 km deep · 1 km away
  22. 1.68 km W of Cobb, California · 16434 days ago · 0 km deep · 2 km away
  23. 1.67 km WSW of Cobb, California · 16433 days ago · 4 km deep · 3 km away
  24. 1.89 km WSW of Cobb, California · 16432 days ago · 1 km deep · 3 km away
  25. 1.73 km SSW of Oakville, California · 16432 days ago · 6 km deep · 56 km away
  26. 1.98 km W of Cobb, California · 16432 days ago · -1 km deep · 2 km away
  27. 1.78 km NE of Hopland, California · 16432 days ago · 5 km deep · 32 km away
  28. 2.87 km WSW of Cobb, California · 16432 days ago · 2 km deep · 1 km away
  29. 1.97 km WSW of Cobb, California · 16432 days ago · 1 km deep · 2 km away
  30. 2.111 km ESE of Boonville, California · 16431 days ago · 6 km deep · 42 km away
  31. 1.66 km WSW of Cobb, California · 16431 days ago · 0 km deep · 2 km away
  32. 2.35 km WSW of Cobb, California · 16430 days ago · 1 km deep · 1 km away
  33. 1.82 km NNW of Ukiah, California · 16430 days ago · 0 km deep · 53 km away
  34. 2.17 km W of Cobb, California · 16429 days ago · 0 km deep · 2 km away
  35. 2.06 km W of Cobb, California · 16428 days ago · 4 km deep · 0 km away
  36. 1.65 km SW of Cobb, California · 16428 days ago · 0 km deep · 4 km away
  37. 2.15 km SW of Cobb, California · 16428 days ago · 0 km deep · 4 km away
  38. 1.65 km WSW of Hopland, California · 16428 days ago · 5 km deep · 35 km away
  39. 1.66 km W of Cobb, California · 16428 days ago · 2 km deep · 0 km away
  40. 1.65 km WSW of Cobb, California · 16427 days ago · 0 km deep · 3 km away
  41. 2.27 km WSW of Cobb, California · 16427 days ago · 0 km deep · 2 km away
  42. 1.66 km W of Cobb, California · 16426 days ago · 1 km deep · 0 km away
  43. 1.85 km W of Cobb, California · 16426 days ago · 0 km deep · 1 km away
  44. 3.15 km W of Cobb, California · 16426 days ago · 1 km deep · 1 km away
  45. 2.46 km W of Cobb, California · 16426 days ago · 1 km deep · 1 km away
  46. 3.111 km NE of Hidden Valley Lake, California · 16426 days ago · 11 km deep · 30 km away
  47. 2.09 km ENE of Hidden Valley Lake, California · 16426 days ago · 8 km deep · 29 km away
  48. 1.84 km WSW of Kenwood, California · 16426 days ago · 8 km deep · 49 km away
  49. 1.79 km W of Cobb, California · 16425 days ago · 1 km deep · 3 km away
  50. 1.65 km WSW of Cobb, California · 16425 days ago · 0 km deep · 1 km away
  51. 1.89 km ENE of Hidden Valley Lake, California · 16425 days ago · 7 km deep · 29 km away
  52. 2.84 km E of Geyserville, California · 16424 days ago · 5 km deep · 13 km away
  53. 2.08 km W of Cobb, California · 16424 days ago · 0 km deep · 2 km away
  54. 1.69 km WSW of Cobb, California · 16424 days ago · 3 km deep · 3 km away
  55. 1.84 km E of Geyserville, California · 16424 days ago · 4 km deep · 13 km away
  56. 3.1Northern California · 16424 days ago · 1 km deep · 1 km away
  57. 1.618 km NE of Upper Lake, California · 16424 days ago · 5 km deep · 54 km away
  58. 1.717 km N of Moskowite Corner, California · 16423 days ago · 8 km deep · 56 km away
  59. 2.014 km N of Moskowite Corner, California · 16423 days ago · 0 km deep · 60 km away
  60. 1.94 km WSW of Cobb, California · 16423 days ago · 1 km deep · 3 km away

The first 60 of 116.

Before

  1. 2.10 km E of Kelseyville, California · 16443 days ago · 0 km deep · 18 km away
  2. 2.03 km SSW of Geyserville, California · 16444 days ago · 3 km deep · 18 km away
  3. 2.37 km WSW of Cobb, California · 16445 days ago · 4 km deep · 2 km away
  4. 2.03 km WNW of Lower Lake, California · 16447 days ago · 1 km deep · 17 km away
  5. 1.7near the coast of Northern California · 16448 days ago · 6 km deep · 56 km away
  6. 1.64 km WSW of Cobb, California · 16449 days ago · 1 km deep · 3 km away
  7. 1.64 km WSW of Cobb, California · 16449 days ago · 2 km deep · 3 km away
  8. 1.611 km S of Kelseyville, California · 16450 days ago · -1 km deep · 8 km away
  9. 1.84 km S of Cobb, California · 16450 days ago · 2 km deep · 8 km away
  10. 1.5Northern California · 16453 days ago · 1 km deep · 3 km away
  11. 1.75 km W of Cobb, California · 16453 days ago · 4 km deep · 2 km away
  12. 2.16 km W of Cobb, California · 16454 days ago · 4 km deep · 0 km away
  13. 1.67 km WSW of Cobb, California · 16455 days ago · 2 km deep · 1 km away
  14. 1.66 km WSW of Cobb, California · 16456 days ago · 0 km deep · 1 km away
  15. 2.06 km WSW of Cobb, California · 16458 days ago · 1 km deep · 1 km away
  16. 1.96 km WSW of Cobb, California · 16458 days ago · 3 km deep · 1 km away
  17. 1.65 km SSW of Clear Lake Riviera, California · 16458 days ago · 1 km deep · 11 km away
  18. 1.71 km WNW of Redwood Valley, California · 16461 days ago · 6 km deep · 62 km away
  19. 1.67 km ESE of Willits, California · 16461 days ago · 6 km deep · 76 km away
  20. 1.75 km SW of Cobb, California · 16461 days ago · 1 km deep · 4 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1067833. Read Tue, Sep 29, 2026, 12:27 PM UTC.