California earthquakes

M1.8 earthquake 6 km WSW of Cobb, California

A magnitude 1.8 earthquake struck 6 km WSW of Cobb, California on Fri, Jul 19, 1985, 3:23 AM PDT (10:23 UTC), 1 km (0 mi) below the surface.

A larger quake followed: M2.8 0 km NNE of Redwood Valley, 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
1985-07-19 10:23:48 UTC
Depth
0.7 km (0.5 mi), shallow
Epicenter
38.807° N, 122.794° 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 0.1 km horizontally, 0.2 km in depth
Magnitude uncertainty
±0.16
Depth from
From location
Station coverage gap
37°
Stations used
23

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 186 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 1.60 km WSW of Redwood Valley, California · 15027 days ago · 7 km deep · 62 km away
  2. 2.80 km NNE of Redwood Valley, California · 15027 days ago · 6 km deep · 62 km away
  3. 1.50 km SW of Redwood Valley, California · 15027 days ago · 4 km deep · 62 km away
  4. 1.55 km W of Cobb, California · 15027 days ago · 0 km deep · 3 km away
  5. 1.76 km W of Cobb, California · 15027 days ago · 3 km deep · 1 km away
  6. 1.65 km WSW of Hopland, California · 15026 days ago · 5 km deep · 36 km away
  7. 2.021 km NNE of Upper Lake, California · 15025 days ago · 6 km deep · 61 km away
  8. 1.86 km E of Calpella, California · 15025 days ago · 5 km deep · 56 km away
  9. 1.53 km SSW of Cobb, California · 15025 days ago · 1 km deep · 4 km away
  10. 2.87 km W of Cobb, California · 15024 days ago · 3 km deep · 2 km away
  11. 2.26 km WSW of Cobb, California · 15022 days ago · 0 km deep · 1 km away
  12. 3.27 km W of Cobb, California · 15022 days ago · 1 km deep · 2 km away
  13. 2.14 km WSW of Cobb, California · 15021 days ago · 1 km deep · 2 km away
  14. 1.910 km SW of Williams, California · 15021 days ago · 15 km deep · 57 km away
  15. 1.66 km WSW of Cobb, California · 15021 days ago · 0 km deep · 1 km away
  16. 2.34 km NNE of Boonville, California · 15020 days ago · 4 km deep · 55 km away
  17. 1.66 km SW of Cobb, California · 15020 days ago · 0 km deep · 3 km away
  18. 3.25 km SW of Cobb, California · 15020 days ago · 2 km deep · 3 km away
  19. 4.05 km SW of Cobb, California · 15020 days ago · -1 km deep · 2 km away
  20. 2.15 km SW of Cobb, California · 15020 days ago · 0 km deep · 2 km away
  21. 2.14 km NW of Redwood Valley, California · 15020 days ago · 5 km deep · 66 km away
  22. 1.64 km WSW of Cobb, California · 15020 days ago · 1 km deep · 2 km away
  23. 2.08 km SSW of Colusa, California · 15019 days ago · 6 km deep · 74 km away
  24. 2.16 km W of Cobb, California · 15019 days ago · 3 km deep · 1 km away
  25. 1.96 km W of Cobb, California · 15018 days ago · 1 km deep · 2 km away
  26. 2.16 km W of Cobb, California · 15018 days ago · 0 km deep · 2 km away
  27. 1.58 km WSW of Cobb, California · 15018 days ago · 4 km deep · 2 km away
  28. 1.713 km N of Brooktrails, California · 15018 days ago · 6 km deep · 98 km away
  29. 1.94 km W of Cobb, California · 15018 days ago · 0 km deep · 2 km away
  30. 1.85 km WNW of Cobb, California · 15016 days ago · 2 km deep · 5 km away
  31. 2.19 km E of Hidden Valley Lake, California · 15016 days ago · 7 km deep · 30 km away
  32. 1.77 km W of Cobb, California · 15016 days ago · 0 km deep · 2 km away
  33. 2.19 km WSW of Cobb, California · 15015 days ago · 1 km deep · 3 km away
  34. 1.56 km W of Cobb, California · 15015 days ago · 3 km deep · 2 km away
  35. 2.67 km WSW of Cobb, California · 15014 days ago · 0 km deep · 1 km away
  36. 2.67 km W of Cobb, California · 15014 days ago · 3 km deep · 1 km away
  37. 1.67 km WSW of Cobb, California · 15014 days ago · 0 km deep · 1 km away
  38. 2.16 km WSW of Cobb, California · 15014 days ago · 4 km deep · 0 km away
  39. 1.90 km ESE of Redwood Valley, California · 15014 days ago · 6 km deep · 62 km away
  40. 1.69 km NE of Hopland, California · 15013 days ago · 6 km deep · 33 km away
  41. 2.05 km SW of Cobb, California · 15013 days ago · 2 km deep · 2 km away
  42. 2.08 km WSW of Cobb, California · 15012 days ago · 4 km deep · 2 km away
  43. 2.16 km W of Cobb, California · 15012 days ago · 1 km deep · 2 km away
  44. 2.022 km WSW of Williams, California · 15011 days ago · 3 km deep · 47 km away
  45. 1.613 km ENE of Clearlake Oaks, California · 15011 days ago · 5 km deep · 36 km away
  46. 2.03 km W of Cobb, California · 15011 days ago · 0 km deep · 3 km away
  47. 1.52 km NNW of Clearlake, California · 15011 days ago · 2 km deep · 23 km away
  48. 1.97 km W of Cobb, California · 15010 days ago · 3 km deep · 2 km away
  49. 1.910 km SE of Hopland, California · 15009 days ago · 29 km deep · 23 km away
  50. 1.87 km W of Cobb, California · 15009 days ago · 3 km deep · 2 km away
  51. 1.86 km W of Cobb, California · 15009 days ago · 3 km deep · 1 km away
  52. 1.66 km NNE of Cloverdale, California · 15009 days ago · 5 km deep · 17 km away
  53. 1.66 km WNW of Cobb, California · 15009 days ago · 1 km deep · 3 km away
  54. 2.09 km SSE of Willits, California · 15008 days ago · 6 km deep · 73 km away
  55. 2.35 km W of Cobb, California · 15008 days ago · -1 km deep · 2 km away
  56. 2.26 km NW of Cobb, California · 15008 days ago · -1 km deep · 6 km away
  57. 2.85 km W of Cobb, California · 15007 days ago · 1 km deep · 3 km away
  58. 1.65 km WSW of Cobb, California · 15007 days ago · 1 km deep · 0 km away
  59. 1.76 km NE of Brooktrails, California · 15007 days ago · 7 km deep · 87 km away
  60. 1.55 km SW of Cobb, California · 15006 days ago · 1 km deep · 4 km away

The first 60 of 186.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc51399. Read Tue, Sep 22, 2026, 8:22 PM UTC.