California earthquakes

M1.8 earthquake 7 km W of Cobb, California

A magnitude 1.8 earthquake struck 7 km W of Cobb, California on Wed, Feb 15, 1984, 6:14 AM PST (14:14 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.1 8 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
1.8 (md), micro
Local time
UTC
1984-02-15 14:14:13 UTC
Depth
2.8 km (1.8 mi), shallow
Epicenter
38.812° N, 122.811° 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 0.3 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
90°
Stations used
11

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 170 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 1.74 km ESE of Santa Rosa, California · 15543 days ago · 7 km deep · 45 km away
  2. 1.85 km WSW of Cobb, California · 15543 days ago · 0 km deep · 3 km away
  3. 1.66 km WSW of Cobb, California · 15542 days ago · 0 km deep · 1 km away
  4. 1.510 km WSW of Cobb, California · 15542 days ago · 12 km deep · 3 km away
  5. 1.77 km WSW of Cobb, California · 15542 days ago · 1 km deep · 1 km away
  6. 1.87 km W of Cobb, California · 15541 days ago · -1 km deep · 1 km away
  7. 3.18 km W of Cobb, California · 15541 days ago · -1 km deep · 2 km away
  8. 1.6Northern California · 15540 days ago · 17 km deep · 40 km away
  9. 2.17 km SW of Hopland, California · 15540 days ago · 3 km deep · 34 km away
  10. 1.76 km W of Cobb, California · 15540 days ago · 2 km deep · 1 km away
  11. 2.76 km W of Cobb, California · 15540 days ago · 3 km deep · 1 km away
  12. 2.27 km WSW of Cobb, California · 15539 days ago · 1 km deep · 0 km away
  13. 2.07 km SE of Hopland, California · 15539 days ago · 4 km deep · 25 km away
  14. 1.88 km SE of Hopland, California · 15539 days ago · 4 km deep · 24 km away
  15. 2.32 km SSE of Occidental, California · 15539 days ago · 47 km deep · 48 km away
  16. 1.53 km SSE of Cottonwood, California · 15538 days ago · 11 km deep · 77 km away
  17. 1.518 km ENE of Potter Valley, California · 15538 days ago · 8 km deep · 63 km away
  18. 2.115 km ESE of Hidden Valley Lake, California · 15538 days ago · 4 km deep · 37 km away
  19. 1.66 km W of Cobb, California · 15538 days ago · 0 km deep · 2 km away
  20. 1.66 km W of Cobb, California · 15538 days ago · 0 km deep · 2 km away
  21. 2.18 km E of Willits, California · 15537 days ago · 7 km deep · 76 km away
  22. 1.91 km WNW of Redwood Valley, California · 15537 days ago · 5 km deep · 62 km away
  23. 1.96 km W of Cobb, California · 15537 days ago · 3 km deep · 2 km away
  24. 1.73 km ESE of Kenwood, California · 15536 days ago · 17 km deep · 53 km away
  25. 2.95 km E of Angwin, California · 15536 days ago · -1 km deep · 46 km away
  26. 1.925 km SE of Covelo, California · 15535 days ago · 5 km deep · 92 km away
  27. 1.58 km W of Cobb, California · 15534 days ago · 0 km deep · 1 km away
  28. 1.84 km W of Cobb, California · 15534 days ago · 0 km deep · 3 km away
  29. 1.67 km W of Cobb, California · 15534 days ago · 3 km deep · 1 km away
  30. 1.712 km SE of Hidden Valley Lake, California · 15534 days ago · 3 km deep · 33 km away
  31. 2.24 km NE of Ukiah, California · 15534 days ago · 4 km deep · 52 km away
  32. 1.73 km W of Redwood Valley, California · 15534 days ago · 6 km deep · 63 km away
  33. 1.88 km SE of Sea Ranch, California · 15534 days ago · 6 km deep · 53 km away
  34. 1.57 km W of Cobb, California · 15533 days ago · 3 km deep · 1 km away
  35. 2.05 km SE of Calpella, California · 15533 days ago · 2 km deep · 53 km away
  36. 2.024 km SE of Covelo, California · 15533 days ago · 4 km deep · 92 km away
  37. 2.48 km WNW of Cobb, CA · 15533 days ago · 8 km deep · 3 km away
  38. 1.94 km WSW of Cobb, California · 15532 days ago · 1 km deep · 4 km away
  39. 2.16 km WSW of Cobb, California · 15532 days ago · 0 km deep · 3 km away
  40. 2.58 km WSW of Cobb, California · 15531 days ago · 3 km deep · 1 km away
  41. 1.67 km WSW of Cobb, California · 15531 days ago · 1 km deep · 1 km away
  42. 1.76 km W of Cobb, California · 15531 days ago · 3 km deep · 2 km away
  43. 1.57 km W of Cobb, California · 15531 days ago · 3 km deep · 0 km away
  44. 1.77 km WSW of Cobb, California · 15530 days ago · 3 km deep · 2 km away
  45. 1.68 km ESE of Talmage, California · 15529 days ago · 8 km deep · 40 km away
  46. 1.97 km E of Willits, California · 15529 days ago · 8 km deep · 77 km away
  47. 1.80 km WNW of Green Valley, California · 15528 days ago · 10 km deep · 83 km away
  48. 1.76 km W of Cobb, California · 15528 days ago · 3 km deep · 2 km away
  49. 2.1near the coast of Northern California · 15528 days ago · 8 km deep · 85 km away
  50. 2.5Northern California · 15528 days ago · 1 km deep · 3 km away
  51. 1.67 km WSW of Cobb, California · 15528 days ago · 1 km deep · 3 km away
  52. 1.73 km SW of Rutherford, California · 15528 days ago · 6 km deep · 53 km away
  53. 1.86 km NW of Hopland, California · 15528 days ago · 25 km deep · 38 km away
  54. 2.56 km W of Cobb, California · 15528 days ago · 1 km deep · 2 km away
  55. 1.86 km WSW of Geyserville, California · 15527 days ago · 11 km deep · 20 km away
  56. 1.54 km WSW of Cobb, California · 15527 days ago · 1 km deep · 4 km away
  57. 2.47 km WSW of Cobb, California · 15526 days ago · 2 km deep · 1 km away
  58. 2.411 km E of Cloverdale, California · 15526 days ago · 22 km deep · 6 km away
  59. 2.313 km N of Comptche, California · 15526 days ago · 21 km deep · 91 km away
  60. 1.64 km WSW of Cobb, California · 15525 days ago · 1 km deep · 4 km away

The first 60 of 170.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1111347. Read Tue, Sep 22, 2026, 11:20 AM UTC.