California earthquakes

M1.9 earthquake 7 km WSW of Cobb, California

A magnitude 1.9 earthquake struck 7 km WSW of Cobb, California on Mon, Feb 6, 1984, 3:30 PM PST (23:30 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.1 7 km W of Cobb, 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
1.9 (md), micro
Local time
UTC
1984-02-06 23:30:39 UTC
Depth
0.4 km (0.3 mi), shallow
Epicenter
38.803° N, 122.806° 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, 0.6 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
76°
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: 167 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 1.74 km E of Saint Helena, California · 15556 days ago · 11 km deep · 46 km away
  2. 2.17 km W of Cobb, California · 15555 days ago · 3 km deep · 1 km away
  3. 1.76 km WSW of Cobb, California · 15554 days ago · 1 km deep · 1 km away
  4. 1.74 km NNE of Kenwood, California · 15553 days ago · 7 km deep · 46 km away
  5. 2.36 km W of Cobb, California · 15553 days ago · 2 km deep · 1 km away
  6. 1.97 km WSW of Cobb, California · 15551 days ago · 0 km deep · 0 km away
  7. 1.96 km WSW of Cobb, California · 15551 days ago · 3 km deep · 1 km away
  8. 2.66 km W of Cobb, California · 15551 days ago · 3 km deep · 2 km away
  9. 1.822 km N of Potter Valley, California · 15551 days ago · 0 km deep · 84 km away
  10. 1.58 km WSW of Cobb, California · 15550 days ago · 2 km deep · 1 km away
  11. 2.55 km SW of Cobb, California · 15550 days ago · 1 km deep · 3 km away
  12. 1.65 km SW of Cobb, California · 15549 days ago · 0 km deep · 4 km away
  13. 2.19 km WSW of Cobb, California · 15549 days ago · 1 km deep · 2 km away
  14. 2.39 km WSW of Cobb, California · 15549 days ago · 2 km deep · 2 km away
  15. 1.97 km W of Cobb, California · 15549 days ago · 3 km deep · 2 km away
  16. 2.26 km SSE of Willows, California · 15549 days ago · 22 km deep · 91 km away
  17. 2.37 km ESE of Willits, California · 15548 days ago · 3 km deep · 76 km away
  18. 1.56 km W of Cobb, California · 15548 days ago · 3 km deep · 2 km away
  19. 1.83 km E of Calpella, California · 15548 days ago · 2 km deep · 57 km away
  20. 1.86 km WSW of Cobb, California · 15548 days ago · 1 km deep · 1 km away
  21. 1.65 km WSW of Cobb, California · 15548 days ago · 1 km deep · 2 km away
  22. 1.78 km WSW of Cobb, California · 15547 days ago · 3 km deep · 1 km away
  23. 1.67 km W of Cobb, California · 15547 days ago · 3 km deep · 2 km away
  24. 2.77 km W of Cobb, California · 15547 days ago · 3 km deep · 2 km away
  25. 1.917 km ENE of Potter Valley, California · 15547 days ago · 7 km deep · 68 km away
  26. 1.75 km E of Brooktrails, California · 15546 days ago · 5 km deep · 85 km away
  27. 2.26 km W of Cobb, California · 15546 days ago · 3 km deep · 2 km away
  28. 2.16 km W of Cobb, California · 15545 days ago · 0 km deep · 1 km away
  29. 2.69 km WSW of Cobb, California · 15545 days ago · 2 km deep · 2 km away
  30. 2.19 km WSW of Cobb, California · 15545 days ago · 2 km deep · 2 km away
  31. 2.05 km SW of Cobb, California · 15544 days ago · 0 km deep · 3 km away
  32. 3.06 km WSW of Cobb, California · 15544 days ago · 3 km deep · 1 km away
  33. 2.07 km WSW of Cobb, California · 15544 days ago · 3 km deep · 1 km away
  34. 2.05 km SW of Cobb, California · 15544 days ago · 0 km deep · 3 km away
  35. 2.05 km SW of Cobb, California · 15544 days ago · 0 km deep · 3 km away
  36. 1.85 km SW of Cobb, California · 15544 days ago · 0 km deep · 3 km away
  37. 1.911 km N of Cazadero, California · 15544 days ago · 13 km deep · 31 km away
  38. 1.68 km WSW of Cobb, California · 15544 days ago · 3 km deep · 1 km away
  39. 1.74 km ESE of Santa Rosa, California · 15543 days ago · 9 km deep · 44 km away
  40. 1.95 km SW of Cobb, California · 15543 days ago · 1 km deep · 3 km away
  41. 1.74 km ESE of Santa Rosa, California · 15543 days ago · 7 km deep · 44 km away
  42. 1.85 km WSW of Cobb, California · 15543 days ago · 0 km deep · 2 km away
  43. 1.66 km WSW of Cobb, California · 15542 days ago · 0 km deep · 1 km away
  44. 1.510 km WSW of Cobb, California · 15542 days ago · 12 km deep · 3 km away
  45. 1.77 km WSW of Cobb, California · 15542 days ago · 1 km deep · 0 km away
  46. 1.87 km W of Cobb, California · 15541 days ago · -1 km deep · 3 km away
  47. 3.18 km W of Cobb, California · 15541 days ago · -1 km deep · 3 km away
  48. 1.6Northern California · 15540 days ago · 17 km deep · 41 km away
  49. 2.17 km SW of Hopland, California · 15540 days ago · 3 km deep · 35 km away
  50. 1.76 km W of Cobb, California · 15540 days ago · 2 km deep · 1 km away
  51. 2.76 km W of Cobb, California · 15540 days ago · 3 km deep · 2 km away
  52. 2.27 km WSW of Cobb, California · 15539 days ago · 1 km deep · 1 km away
  53. 2.07 km SE of Hopland, California · 15539 days ago · 4 km deep · 26 km away
  54. 1.88 km SE of Hopland, California · 15539 days ago · 4 km deep · 25 km away
  55. 2.32 km SSE of Occidental, California · 15538 days ago · 47 km deep · 47 km away
  56. 1.53 km SSE of Cottonwood, California · 15538 days ago · 11 km deep · 76 km away
  57. 1.518 km ENE of Potter Valley, California · 15538 days ago · 8 km deep · 64 km away
  58. 2.115 km ESE of Hidden Valley Lake, California · 15538 days ago · 4 km deep · 36 km away
  59. 1.66 km W of Cobb, California · 15538 days ago · 0 km deep · 2 km away
  60. 1.66 km W of Cobb, California · 15538 days ago · 0 km deep · 2 km away

The first 60 of 167.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1110921. Read Tue, Sep 22, 2026, 10:00 AM UTC.