California earthquakes

M1.6 earthquake 8 km WSW of Cobb, California

A magnitude 1.6 earthquake struck 8 km WSW of Cobb, California on Sun, Jul 19, 1987, 4:01 AM PDT (11:01 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M1.6 4 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.

Open the live map with earthquakes

The earthquake

Magnitude
1.6 (md), micro
Local time
UTC
1987-07-19 11:01:14 UTC
Depth
3.0 km (1.8 mi), shallow
Epicenter
38.800° N, 122.820° 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 0.4 km horizontally, 0.9 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
116°
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 169 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 1.64 km W of Cobb, California · 14299 days ago · 0 km deep · 5 km away
  2. 1.95 km NW of Green Valley, California · 14298 days ago · 4 km deep · 78 km away
  3. 1.76 km W of Cobb, California · 14298 days ago · 3 km deep · 3 km away
  4. 1.67 km W of Cobb, California · 14298 days ago · 1 km deep · 3 km away
  5. 1.94 km SW of Cobb, California · 14298 days ago · 1 km deep · 5 km away
  6. 1.86 km W of Cobb, California · 14297 days ago · 3 km deep · 3 km away
  7. 2.46 km W of Cobb, California · 14297 days ago · 3 km deep · 3 km away
  8. 1.66 km SW of Glen Ellen, California · 14297 days ago · 8 km deep · 56 km away
  9. 1.85 km WNW of Cobb, California · 14297 days ago · 3 km deep · 6 km away
  10. 2.05 km W of Cobb, California · 14297 days ago · 1 km deep · 3 km away
  11. 1.73 km W of Cobb, California · 14296 days ago · 0 km deep · 5 km away
  12. 2.06 km WSW of Cobb, California · 14296 days ago · 3 km deep · 2 km away
  13. 2.05 km WSW of Cobb, California · 14296 days ago · 1 km deep · 4 km away
  14. 1.76 km WSW of Cobb, California · 14295 days ago · -1 km deep · 3 km away
  15. 1.95 km W of Cobb, California · 14294 days ago · 1 km deep · 4 km away
  16. 2.14 km WSW of Cobb, California · 14293 days ago · 1 km deep · 4 km away
  17. 1.64 km WSW of Cobb, California · 14293 days ago · 1 km deep · 4 km away
  18. 1.64 km WSW of Cobb, California · 14293 days ago · 1 km deep · 4 km away
  19. 1.75 km WSW of Cobb, California · 14293 days ago · 1 km deep · 4 km away
  20. 1.59 km W of Cobb, California · 14293 days ago · 1 km deep · 2 km away
  21. 2.35 km WSW of Cobb, California · 14293 days ago · 0 km deep · 4 km away
  22. 2.05 km WSW of Cobb, California · 14292 days ago · -1 km deep · 3 km away
  23. 1.66 km W of Cobb, California · 14291 days ago · 3 km deep · 3 km away
  24. 1.86 km WSW of Cobb, California · 14290 days ago · 3 km deep · 2 km away
  25. 1.78 km W of Cobb, California · 14290 days ago · 1 km deep · 1 km away
  26. 1.65 km W of Cobb, California · 14289 days ago · 0 km deep · 4 km away
  27. 1.65 km W of Cobb, California · 14289 days ago · 0 km deep · 4 km away
  28. 1.64 km WSW of Cobb, California · 14289 days ago · 1 km deep · 4 km away
  29. 1.66 km W of Cobb, California · 14289 days ago · 3 km deep · 3 km away
  30. 1.86 km SW of Cobb, California · 14289 days ago · 1 km deep · 4 km away
  31. 1.86 km SW of Cobb, California · 14289 days ago · 1 km deep · 4 km away
  32. 1.75 km W of Cobb, California · 14289 days ago · -1 km deep · 4 km away
  33. 1.67 km W of Cobb, California · 14288 days ago · 1 km deep · 3 km away
  34. 1.86 km SW of Cobb, California · 14287 days ago · 0 km deep · 4 km away
  35. 2.010 km SE of Willits, California · 14287 days ago · 0 km deep · 72 km away
  36. 1.86 km WSW of Cobb, California · 14287 days ago · 0 km deep · 2 km away
  37. 1.86 km WSW of Cobb, California · 14287 days ago · 1 km deep · 3 km away
  38. 1.66 km W of Cobb, California · 14287 days ago · 2 km deep · 4 km away
  39. 1.83 km N of Cloverdale, California · 14287 days ago · 0 km deep · 18 km away
  40. 1.66 km SW of Cobb, California · 14287 days ago · 0 km deep · 5 km away
  41. 1.57 km WSW of Cobb, California · 14286 days ago · 3 km deep · 2 km away
  42. 1.87 km WSW of Cobb, California · 14286 days ago · 1 km deep · 2 km away
  43. 1.79 km SE of Boonville, California · 14286 days ago · 7 km deep · 43 km away
  44. 1.56 km W of Cobb, California · 14286 days ago · 2 km deep · 2 km away
  45. 1.55 km WNW of Cobb, California · 14286 days ago · 1 km deep · 5 km away
  46. 1.74 km W of Cobb, California · 14285 days ago · 1 km deep · 4 km away
  47. 2.27 km W of Cobb, California · 14285 days ago · 4 km deep · 2 km away
  48. 1.84 km SW of Cobb, California · 14285 days ago · 0 km deep · 5 km away
  49. 1.87 km W of Cobb, California · 14285 days ago · 1 km deep · 3 km away
  50. 1.87 km WSW of Cobb, California · 14284 days ago · 2 km deep · 2 km away
  51. 1.97 km WSW of Cobb, California · 14284 days ago · 1 km deep · 1 km away
  52. 1.72 km SSW of Clearlake, California · 14283 days ago · 3 km deep · 22 km away
  53. 1.8Northern California · 14283 days ago · 1 km deep · 0 km away
  54. 1.59 km ESE of Hidden Valley Lake, California · 14283 days ago · 5 km deep · 32 km away
  55. 1.91 km W of Green Valley, California · 14283 days ago · 10 km deep · 82 km away
  56. 2.15 km SW of Cobb, California · 14282 days ago · 2 km deep · 4 km away
  57. 2.06 km W of Cobb, California · 14282 days ago · 4 km deep · 3 km away
  58. 1.65 km W of Cobb, California · 14282 days ago · 1 km deep · 5 km away
  59. 1.63 km NNW of Cloverdale, California · 14282 days ago · -1 km deep · 18 km away
  60. 1.75 km WSW of Cobb, California · 14282 days ago · 0 km deep · 4 km away

The first 60 of 169.

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1151237. Read Wed, Sep 23, 2026, 7:07 PM UTC.