California earthquakes

M1.8 earthquake 9 km WSW of Cobb, California

A magnitude 1.8 earthquake struck 9 km WSW of Cobb, California on Sat, Jul 14, 1984, 3:02 PM PDT (22:02 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M3.2 7 km SW 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
1984-07-14 22:02:21 UTC
Depth
1.9 km (1.2 mi), shallow
Epicenter
38.800° N, 122.826° 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
±0.10
Depth from
From location
Station coverage gap
73°
Stations used
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 171 in the 60 days after this one and 86 in the 30 days before it.

After

  1. 1.77 km W of Cobb, California · 15416 days ago · 1 km deep · 3 km away
  2. 1.87 km W of Cobb, California · 15416 days ago · 1 km deep · 3 km away
  3. 2.07 km W of Cobb, California · 15416 days ago · 3 km deep · 2 km away
  4. 1.75 km WSW of Cobb, California · 15416 days ago · 1 km deep · 4 km away
  5. 1.75 km WSW of Cobb, California · 15416 days ago · 0 km deep · 4 km away
  6. 1.58 km WSW of Cobb, California · 15416 days ago · 2 km deep · 1 km away
  7. 2.08 km WSW of Cobb, California · 15416 days ago · 3 km deep · 2 km away
  8. 1.711 km NNE of Angwin, California · 15415 days ago · -1 km deep · 38 km away
  9. 1.912 km N of Angwin, California · 15415 days ago · 2 km deep · 35 km away
  10. 1.68 km WSW of Cobb, California · 15415 days ago · 0 km deep · 0 km away
  11. 2.07 km W of Cobb, California · 15414 days ago · 1 km deep · 2 km away
  12. 1.53 km SSE of Hopland, California · 15414 days ago · 1 km deep · 29 km away
  13. 2.04 km NE of Willits, California · 15414 days ago · 3 km deep · 82 km away
  14. 1.94 km WSW of Cobb, California · 15414 days ago · 1 km deep · 5 km away
  15. 1.89 km SSW of Calistoga, California · 15413 days ago · 5 km deep · 38 km away
  16. 2.18 km SSW of Lakeport, California · 15413 days ago · 4 km deep · 21 km away
  17. 2.70 km WSW of Lakeport, California · 15413 days ago · 21 km deep · 28 km away
  18. 2.57 km WSW of Cobb, California · 15413 days ago · 0 km deep · 2 km away
  19. 1.72 km NE of Lakeport, California · 15413 days ago · 3 km deep · 29 km away
  20. 2.09 km E of Calpella, California · 15412 days ago · 2 km deep · 52 km away
  21. 2.57 km W of Cobb, California · 15412 days ago · 3 km deep · 3 km away
  22. 1.75 km W of Cobb, California · 15412 days ago · 1 km deep · 4 km away
  23. 1.92 km ENE of Soda Bay, California · 15411 days ago · 3 km deep · 23 km away
  24. 2.516 km NNE of Upper Lake, California · 15411 days ago · 7 km deep · 55 km away
  25. 1.78 km W of Cobb, California · 15411 days ago · 0 km deep · 2 km away
  26. 1.63 km S of Nice, California · 15411 days ago · 12 km deep · 32 km away
  27. 1.65 km SW of Cobb, California · 15411 days ago · 1 km deep · 6 km away
  28. 1.76 km W of Cobb, California · 15411 days ago · 2 km deep · 3 km away
  29. 1.66 km W of Cobb, California · 15410 days ago · 2 km deep · 3 km away
  30. 2.25 km SW of Cobb, California · 15410 days ago · 0 km deep · 5 km away
  31. 1.65 km SW of Cobb, California · 15410 days ago · -1 km deep · 4 km away
  32. 1.67 km WSW of Cobb, California · 15410 days ago · 3 km deep · 2 km away
  33. 2.35 km SW of Cobb, California · 15410 days ago · 0 km deep · 5 km away
  34. 2.16 km W of Cobb, California · 15410 days ago · 2 km deep · 3 km away
  35. 1.5Northern California · 15409 days ago · 1 km deep · 1 km away
  36. 2.326 km NNE of Potter Valley, California · 15409 days ago · 7 km deep · 83 km away
  37. 1.56 km WSW of Cobb, California · 15408 days ago · 4 km deep · 3 km away
  38. 2.23 km SE of Clear Lake Riviera, California · 15408 days ago · -1 km deep · 19 km away
  39. 1.623 km NNE of Potter Valley, California · 15408 days ago · 10 km deep · 80 km away
  40. 1.610 km W of Geyserville, California · 15408 days ago · -1 km deep · 20 km away
  41. 1.96 km W of Cobb, California · 15407 days ago · 3 km deep · 3 km away
  42. 1.68 km W of Cobb, California · 15407 days ago · 1 km deep · 3 km away
  43. 2.05 km W of Cobb, California · 15407 days ago · 2 km deep · 4 km away
  44. 1.618 km NE of Potter Valley, California · 15406 days ago · 7 km deep · 69 km away
  45. 1.77 km WSW of Cobb, California · 15406 days ago · 0 km deep · 3 km away
  46. 1.66 km W of Cobb, California · 15406 days ago · 2 km deep · 4 km away
  47. 1.611 km E of Angwin, California · 15405 days ago · 2 km deep · 50 km away
  48. 1.7near the coast of Northern California · 15405 days ago · 1 km deep · 98 km away
  49. 2.07 km W of Cobb, California · 15404 days ago · 3 km deep · 3 km away
  50. 1.64 km SW of Calistoga, California · 15404 days ago · -1 km deep · 34 km away
  51. 3.27 km SW of Cobb, California · 15404 days ago · 3 km deep · 5 km away
  52. 1.57 km SW of Cobb, California · 15404 days ago · 3 km deep · 5 km away
  53. 1.625 km NNE of Potter Valley, California · 15403 days ago · 3 km deep · 83 km away
  54. 1.57 km WSW of Cobb, California · 15403 days ago · 2 km deep · 2 km away
  55. 2.36 km WSW of Cobb, California · 15403 days ago · 3 km deep · 3 km away
  56. 2.25 km WSW of Cobb, California · 15402 days ago · 0 km deep · 3 km away
  57. 1.98 km WSW of Cobb, California · 15402 days ago · 0 km deep · 1 km away
  58. 1.74 km SSE of Calpella, California · 15402 days ago · 7 km deep · 54 km away
  59. 2.07 km W of Cobb, California · 15402 days ago · 0 km deep · 3 km away
  60. 1.97 km WSW of Cobb, California · 15402 days ago · 1 km deep · 2 km away

The first 60 of 171.

Before

  1. 1.95 km SW of Cobb, California · 15418 days ago · 0 km deep · 5 km away
  2. 1.84 km WSW of Calpella, California · 15418 days ago · -1 km deep · 60 km away
  3. 1.67 km W of Cobb, California · 15418 days ago · 3 km deep · 3 km away
  4. 1.515 km SE of Hidden Valley Lake, California · 15418 days ago · 8 km deep · 36 km away
  5. 1.65 km WSW of Cobb, California · 15418 days ago · -1 km deep · 5 km away
  6. 2.06 km W of Cobb, California · 15418 days ago · 3 km deep · 3 km away
  7. 1.516 km ENE of Potter Valley, California · 15419 days ago · 11 km deep · 65 km away
  8. 1.66 km W of Cobb, California · 15419 days ago · 0 km deep · 4 km away
  9. 1.86 km W of Cobb, California · 15419 days ago · 2 km deep · 3 km away
  10. 1.50 km E of Larkfield-Wikiup, California · 15419 days ago · 2 km deep · 33 km away
  11. 1.84 km S of Cobb, California · 15419 days ago · 2 km deep · 9 km away
  12. 2.07 km W of Cobb, California · 15421 days ago · 3 km deep · 2 km away
  13. 2.17 km WSW of Cobb, California · 15422 days ago · 2 km deep · 2 km away
  14. 2.15 km SE of Willits, California · 15422 days ago · 5 km deep · 76 km away
  15. 1.95 km NW of Deer Park, California · 15424 days ago · 0 km deep · 38 km away
  16. 1.75 km WSW of Cobb, California · 15425 days ago · 1 km deep · 4 km away
  17. 1.57 km W of Cobb, California · 15426 days ago · 1 km deep · 3 km away
  18. 2.07 km SE of Willits, California · 15426 days ago · 8 km deep · 74 km away
  19. 1.520 km ENE of Potter Valley, California · 15426 days ago · 9 km deep · 64 km away
  20. 1.86 km W of Cobb, California · 15427 days ago · 3 km deep · 3 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc22721. Read Tue, Sep 29, 2026, 3:36 PM UTC.