California earthquakes

M1.8 earthquake 6 km W of Cobb, California

A magnitude 1.8 earthquake struck 6 km W of Cobb, California on Tue, Jun 16, 1981, 2:11 AM PDT (09:11 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M2.3 5 km SW of Cobb, CA. 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
1981-06-16 09:11:33 UTC
Depth
3.4 km (2.1 mi), shallow
Epicenter
38.818° N, 122.801° 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
±0.17
Depth from
From location
Station coverage gap
40°
Stations used
21

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 125 in the 60 days after this one and 58 in the 30 days before it.

After

  1. 1.75 km SW of Cobb, California · 16535 days ago · -1 km deep · 4 km away
  2. 1.76 km W of Cobb, California · 16533 days ago · 4 km deep · 1 km away
  3. 2.35 km SW of Cobb, CA · 16531 days ago · -1 km deep · 5 km away
  4. 1.76 km W of Lower Lake, California · 16531 days ago · 3 km deep · 14 km away
  5. 2.57 km WSW of Cobb, California · 16531 days ago · 1 km deep · 1 km away
  6. 1.67 km WSW of Cobb, California · 16531 days ago · 3 km deep · 2 km away
  7. 1.66 km W of Cobb, California · 16529 days ago · 4 km deep · 0 km away
  8. 1.65 km NNE of Rohnert Park, California · 16529 days ago · 16 km deep · 49 km away
  9. 3.518 km WSW of Williams, California · 16528 days ago · 12 km deep · 49 km away
  10. 1.66 km W of Cobb, California · 16528 days ago · 0 km deep · 1 km away
  11. 1.66 km W of Cobb, California · 16528 days ago · 1 km deep · 1 km away
  12. 2.421 km WSW of Williams, California · 16528 days ago · -1 km deep · 47 km away
  13. 1.77 km WSW of Cobb, California · 16528 days ago · 0 km deep · 1 km away
  14. 1.97 km WSW of Cobb, California · 16527 days ago · -1 km deep · 2 km away
  15. 2.34 km ESE of Clear Lake Riviera, California · 16526 days ago · -1 km deep · 17 km away
  16. 1.79 km WSW of Cobb, California · 16526 days ago · 2 km deep · 3 km away
  17. 1.69 km WSW of Cobb, California · 16525 days ago · 1 km deep · 3 km away
  18. 1.87 km W of Cobb, California · 16525 days ago · 1 km deep · 1 km away
  19. 1.87 km WSW of Cobb, California · 16525 days ago · 1 km deep · 2 km away
  20. 2.56 km WSW of Cobb, California · 16524 days ago · 0 km deep · 3 km away
  21. 1.78 km WSW of Cobb, California · 16524 days ago · 0 km deep · 2 km away
  22. 2.56 km W of Cobb, California · 16524 days ago · 4 km deep · 1 km away
  23. 1.66 km W of Cobb, California · 16524 days ago · 3 km deep · 0 km away
  24. 1.68 km NE of Healdsburg, California · 16524 days ago · 6 km deep · 16 km away
  25. 3.0Northern California · 16524 days ago · 4 km deep · 1 km away
  26. 2.11 km SW of Stonyford, California · 16524 days ago · 7 km deep · 64 km away
  27. 1.96 km W of Cobb, California · 16523 days ago · 4 km deep · 1 km away
  28. 2.64 km WSW of Cobb, California · 16521 days ago · 3 km deep · 3 km away
  29. 1.97 km WNW of Philo, California · 16521 days ago · 6 km deep · 69 km away
  30. 1.76 km WSW of Cobb, California · 16521 days ago · 1 km deep · 1 km away
  31. 2.05 km ESE of Talmage, California · 16520 days ago · 7 km deep · 43 km away
  32. 1.62 km SE of Talmage, California · 16520 days ago · 5 km deep · 45 km away
  33. 1.67 km NW of Redwood Valley, California · 16519 days ago · 7 km deep · 68 km away
  34. 1.71 km NNW of Boonville, California · 16518 days ago · 4 km deep · 55 km away
  35. 2.111 km S of Comptche, California · 16518 days ago · 4 km deep · 76 km away
  36. 1.96 km W of Stonyford, California · 16517 days ago · 0 km deep · 63 km away
  37. 2.06 km SW of Cobb, California · 16517 days ago · 1 km deep · 4 km away
  38. 2.24 km W of Stonyford, California · 16517 days ago · 3 km deep · 63 km away
  39. 2.09 km WSW of Cobb, California · 16516 days ago · 2 km deep · 3 km away
  40. 2.18 km W of Calistoga, California · 16515 days ago · 7 km deep · 29 km away
  41. 1.75 km WNW of Potter Valley, California · 16515 days ago · -1 km deep · 67 km away
  42. 1.67 km WSW of Cobb, California · 16514 days ago · 1 km deep · 2 km away
  43. 1.73 km N of Larkfield-Wikiup, California · 16514 days ago · 6 km deep · 31 km away
  44. 2.14 km NNE of Clearlake, California · 16514 days ago · 0 km deep · 26 km away
  45. 2.13 km WSW of Redwood Valley, California · 16513 days ago · 2 km deep · 62 km away
  46. 2.010 km E of Comptche, California · 16512 days ago · 6 km deep · 76 km away
  47. 2.18 km NNW of Redwood Valley, California · 16512 days ago · 1 km deep · 69 km away
  48. 1.818 km NE of Potter Valley, California · 16511 days ago · 7 km deep · 70 km away
  49. 2.29 km WSW of Cobb, California · 16511 days ago · 1 km deep · 3 km away
  50. 2.08 km NW of Redwood Valley, California · 16510 days ago · 2 km deep · 69 km away
  51. 1.822 km NE of Potter Valley, California · 16510 days ago · 11 km deep · 73 km away
  52. 1.87 km NNW of Redwood Valley, California · 16509 days ago · 5 km deep · 69 km away
  53. 2.18 km NE of Hidden Valley Lake, California · 16508 days ago · 8 km deep · 28 km away
  54. 1.54 km WSW of Cobb, California · 16508 days ago · 1 km deep · 3 km away
  55. 1.919 km ENE of Potter Valley, California · 16508 days ago · 9 km deep · 63 km away
  56. 1.824 km NE of Potter Valley, California · 16508 days ago · 12 km deep · 76 km away
  57. 1.88 km NW of Redwood Valley, California · 16507 days ago · 3 km deep · 69 km away
  58. 2.122 km WNW of Elk Creek, California · 16507 days ago · 6 km deep · 93 km away
  59. 1.56 km W of Cobb, California · 16507 days ago · 3 km deep · 1 km away
  60. 1.919 km ENE of Potter Valley, California · 16507 days ago · 11 km deep · 63 km away

The first 60 of 125.

Before

  1. 2.18 km W of Cobb, California · 16535 days ago · 1 km deep · 1 km away
  2. 1.73 km E of Windsor, California · 16535 days ago · 4 km deep · 31 km away
  3. 1.6Northern California · 16536 days ago · 1 km deep · 3 km away
  4. 1.724 km WNW of Elk Creek, California · 16536 days ago · 5 km deep · 93 km away
  5. 2.15 km SW of Cobb, California · 16536 days ago · 1 km deep · 4 km away
  6. 1.74 km S of Cobb, California · 16539 days ago · 1 km deep · 8 km away
  7. 1.95 km NNE of Brooktrails, California · 16539 days ago · 7 km deep · 89 km away
  8. 1.612 km N of Brooktrails, California · 16540 days ago · 8 km deep · 95 km away
  9. 2.39 km WSW of Cobb, California · 16540 days ago · 2 km deep · 3 km away
  10. 1.85 km WSW of Cobb, California · 16541 days ago · 1 km deep · 3 km away
  11. 2.56 km WSW of Cobb, California · 16542 days ago · 4 km deep · 2 km away
  12. 2.111 km SSE of Comptche, California · 16542 days ago · 3 km deep · 77 km away
  13. 1.69 km WSW of Cobb, California · 16544 days ago · 2 km deep · 3 km away
  14. 2.114 km NNW of Guinda, California · 16544 days ago · 8 km deep · 50 km away
  15. 2.26 km WSW of Calistoga, California · 16544 days ago · 5 km deep · 32 km away
  16. 1.78 km WSW of Cobb, California · 16545 days ago · 3 km deep · 2 km away
  17. 1.79 km E of Hidden Valley Lake, California · 16546 days ago · 7 km deep · 30 km away
  18. 1.69 km ESE of Willits, California · 16546 days ago · 8 km deep · 74 km away
  19. 3.59 km ESE of Willits, California · 16546 days ago · 9 km deep · 75 km away
  20. 2.015 km NNW of Guinda, California · 16548 days ago · 9 km deep · 51 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1064608. Read Tue, Sep 22, 2026, 11:24 PM UTC.