California earthquakes

M1.6 earthquake 4 km W of Cobb, California

A magnitude 1.6 earthquake struck 4 km W of Cobb, California on Fri, Sep 13, 1985, 1:03 PM PDT (20:03 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M1.8 6 km WSW 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
1.6 (md), micro
Local time
UTC
1985-09-13 20:03:04 UTC
Depth
0.3 km (0.2 mi), shallow
Epicenter
38.822° N, 122.774° 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, 0.5 km in depth
Magnitude uncertainty
±0.26
Depth from
From location
Station coverage gap
51°
Stations used
12

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 177 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 1.86 km WSW of Cobb, California · 14977 days ago · 1 km deep · 3 km away
  2. 1.97 km W of Cobb, California · 14977 days ago · 0 km deep · 4 km away
  3. 2.16 km W of Cobb, California · 14977 days ago · 1 km deep · 3 km away
  4. 1.86 km SW of Hopland, California · 14977 days ago · 4 km deep · 37 km away
  5. 2.27 km W of Cobb, California · 14977 days ago · 3 km deep · 3 km away
  6. 2.127 km ESE of Covelo, California · 14977 days ago · 4 km deep · 98 km away
  7. 1.95 km SW of Cobb, California · 14976 days ago · 2 km deep · 4 km away
  8. 2.46 km W of Cobb, California · 14976 days ago · 1 km deep · 2 km away
  9. 1.99 km W of Cobb, California · 14975 days ago · 0 km deep · 5 km away
  10. 1.57 km WSW of Cobb, California · 14975 days ago · 0 km deep · 4 km away
  11. 1.63 km SW of Cobb, California · 14975 days ago · 1 km deep · 4 km away
  12. 1.57 km W of Cobb, California · 14974 days ago · 1 km deep · 3 km away
  13. 1.65 km WSW of Cobb, California · 14974 days ago · 1 km deep · 2 km away
  14. 1.85 km NNE of Windsor, California · 14974 days ago · 5 km deep · 26 km away
  15. 2.36 km NNE of Windsor, California · 14974 days ago · 1 km deep · 25 km away
  16. 2.510 km N of Cloverdale, California · 14974 days ago · -1 km deep · 21 km away
  17. 3.15 km WSW of Cobb, California · 14973 days ago · -1 km deep · 2 km away
  18. 1.95 km WSW of Cobb, California · 14973 days ago · 0 km deep · 3 km away
  19. 1.64 km S of Cobb, California · 14973 days ago · 2 km deep · 6 km away
  20. 2.55 km SW of Cobb, California · 14972 days ago · 0 km deep · 5 km away
  21. 2.19 km ENE of Hopland, California · 14972 days ago · 23 km deep · 28 km away
  22. 2.05 km S of Moskowite Corner, California · 14972 days ago · 8 km deep · 68 km away
  23. 2.47 km W of Cobb, California · 14972 days ago · 3 km deep · 3 km away
  24. 1.75 km SW of Cobb, California · 14972 days ago · 1 km deep · 4 km away
  25. 1.97 km ENE of Clearlake, California · 14972 days ago · 3 km deep · 27 km away
  26. 1.77 km W of Cobb, California · 14972 days ago · 3 km deep · 3 km away
  27. 2.52 km E of Moskowite Corner, California · 14972 days ago · 4 km deep · 68 km away
  28. 1.63 km NE of Santa Rosa, California · 14971 days ago · 2 km deep · 40 km away
  29. 2.28 km W of Cobb, California · 14970 days ago · 1 km deep · 4 km away
  30. 1.51 km ESE of Clear Lake Riviera, California · 14970 days ago · 1 km deep · 15 km away
  31. 1.64 km ESE of Moskowite Corner, California · 14970 days ago · 5 km deep · 71 km away
  32. 1.62 km E of Rodeo, California · 14969 days ago · 4 km deep · 99 km away
  33. 2.06 km W of Cobb, California · 14969 days ago · 2 km deep · 2 km away
  34. 1.76 km W of Cobb, California · 14969 days ago · 3 km deep · 2 km away
  35. 1.74 km S of Cobb, California · 14969 days ago · 2 km deep · 6 km away
  36. 1.64 km S of Cobb, California · 14968 days ago · 2 km deep · 6 km away
  37. 1.65 km SW of Cobb, California · 14968 days ago · 1 km deep · 4 km away
  38. 2.019 km N of Upper Lake, California · 14968 days ago · 5 km deep · 58 km away
  39. 1.89 km W of Cobb, California · 14966 days ago · 0 km deep · 5 km away
  40. 1.74 km WSW of Cobb, California · 14966 days ago · 1 km deep · 2 km away
  41. 1.98 km WSW of Cobb, California · 14965 days ago · 1 km deep · 4 km away
  42. 1.64 km SE of Larkfield-Wikiup, California · 14965 days ago · 8 km deep · 37 km away
  43. 1.812 km WNW of Calistoga, California · 14964 days ago · 8 km deep · 22 km away
  44. 2.58 km W of Cobb, California · 14963 days ago · 1 km deep · 4 km away
  45. 1.64 km NW of Redwood Valley, California · 14963 days ago · 7 km deep · 66 km away
  46. 2.34 km WSW of Cobb, California · 14963 days ago · 1 km deep · 2 km away
  47. 1.711 km NW of Moskowite Corner, California · 14962 days ago · 4 km deep · 54 km away
  48. 2.25 km WSW of Cobb, California · 14962 days ago · 1 km deep · 1 km away
  49. 1.86 km SSE of Moskowite Corner, California · 14962 days ago · 5 km deep · 71 km away
  50. 2.24 km W of Cobb, California · 14961 days ago · 0 km deep · 0 km away
  51. 3.28 km SE of Hopland, California · 14961 days ago · 4 km deep · 26 km away
  52. 1.58 km SE of Hopland, California · 14961 days ago · 1 km deep · 26 km away
  53. 1.613 km SSE of Boonville, California · 14960 days ago · -1 km deep · 46 km away
  54. 2.48 km SE of Hopland, California · 14960 days ago · 2 km deep · 26 km away
  55. 2.78 km NW of Redwood Valley, California · 14960 days ago · -1 km deep · 71 km away
  56. 2.56 km W of Cobb, California · 14960 days ago · 3 km deep · 2 km away
  57. 1.98 km SE of Hopland, California · 14960 days ago · 1 km deep · 26 km away
  58. 1.88 km WSW of Cobb, California · 14960 days ago · 3 km deep · 4 km away
  59. 1.8Northern California · 14959 days ago · 0 km deep · 4 km away
  60. 2.28 km W of Cobb, California · 14959 days ago · 0 km deep · 4 km away

The first 60 of 177.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1131333. Read Tue, Sep 22, 2026, 3:58 PM UTC.