California earthquakes

M1.8 earthquake 5 km WSW of Cobb, California

A magnitude 1.8 earthquake struck 5 km WSW of Cobb, California on Wed, Nov 20, 1985, 6:43 PM PST (02:43 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M3.6 8 km WSW of Kelseyville, 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
1.8 (md), micro
Local time
UTC
1985-11-21 02:43:41 UTC
Depth
0.8 km (0.5 mi), shallow
Epicenter
38.808° N, 122.780° 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, 0.5 km in depth
Depth from
From location
Station coverage gap
83°
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 178 in the 60 days after this one and 102 in the 30 days before it.

After

  1. 1.86 km W of Cobb, California · 14922 days ago · 1 km deep · 2 km away
  2. 2.13 km ESE of Cloverdale, California · 14922 days ago · 2 km deep · 18 km away
  3. 2.212 km E of Geyserville, California · 14921 days ago · 3 km deep · 13 km away
  4. 2.29 km WSW of Cobb, California · 14920 days ago · 1 km deep · 4 km away
  5. 1.57 km WSW of Cobb, California · 14920 days ago · 2 km deep · 3 km away
  6. 1.59 km SSE of Willits, California · 14920 days ago · 7 km deep · 74 km away
  7. 1.77 km WSW of Cobb, California · 14920 days ago · 1 km deep · 2 km away
  8. 1.65 km SW of Cobb, California · 14920 days ago · 0 km deep · 2 km away
  9. 2.55 km SW of Cobb, California · 14920 days ago · 0 km deep · 2 km away
  10. 2.27 km W of Cobb, California · 14920 days ago · 0 km deep · 3 km away
  11. 2.05 km SW of Cobb, California · 14919 days ago · 4 km deep · 2 km away
  12. 1.78 km WSW of Cobb, California · 14919 days ago · 3 km deep · 3 km away
  13. 2.15 km WSW of Cobb, California · 14918 days ago · 1 km deep · 0 km away
  14. 1.87 km W of Cobb, California · 14918 days ago · 1 km deep · 3 km away
  15. 2.026 km NE of Potter Valley, California · 14918 days ago · 7 km deep · 74 km away
  16. 1.98 km W of Cobb, California · 14917 days ago · 0 km deep · 4 km away
  17. 1.712 km WSW of Willits, California · 14916 days ago · 0 km deep · 85 km away
  18. 1.75 km W of Cobb, California · 14916 days ago · 1 km deep · 3 km away
  19. 1.96 km E of Calpella, California · 14916 days ago · 3 km deep · 56 km away
  20. 2.03 km ESE of Clear Lake Riviera, California · 14916 days ago · 4 km deep · 17 km away
  21. 1.67 km WSW of Cobb, California · 14916 days ago · 0 km deep · 2 km away
  22. 1.57 km WSW of Cobb, California · 14916 days ago · -1 km deep · 2 km away
  23. 2.07 km WSW of Cobb, California · 14916 days ago · 0 km deep · 2 km away
  24. 1.96 km W of Cobb, California · 14916 days ago · 3 km deep · 2 km away
  25. 2.68 km WSW of Cobb, California · 14915 days ago · 1 km deep · 3 km away
  26. 1.612 km NE of Clearlake, California · 14915 days ago · 6 km deep · 34 km away
  27. 1.55 km W of Cobb, California · 14915 days ago · 0 km deep · 2 km away
  28. 1.87 km WSW of Cobb, California · 14915 days ago · 0 km deep · 2 km away
  29. 1.64 km SW of Cobb, California · 14915 days ago · 1 km deep · 3 km away
  30. 1.97 km W of Cobb, California · 14914 days ago · 0 km deep · 3 km away
  31. 2.11 km WSW of Roseland, California · 14914 days ago · 6 km deep · 44 km away
  32. 1.77 km W of Cobb, California · 14914 days ago · 4 km deep · 3 km away
  33. 2.83 km ESE of Rodeo, California · 14914 days ago · 7 km deep · 100 km away
  34. 1.99 km WSW of Cobb, California · 14914 days ago · 2 km deep · 4 km away
  35. 2.321 km ENE of Clearlake, California · 14914 days ago · 6 km deep · 42 km away
  36. 1.58 km W of Cobb, California · 14913 days ago · 1 km deep · 4 km away
  37. 1.65 km WSW of Cobb, California · 14913 days ago · 0 km deep · 2 km away
  38. 1.65 km WSW of Cobb, California · 14913 days ago · 1 km deep · 0 km away
  39. 2.620 km ENE of Clearlake, California · 14913 days ago · 0 km deep · 40 km away
  40. 2.45 km WSW of Cobb, California · 14913 days ago · 1 km deep · 1 km away
  41. 2.45 km SW of Cobb, California · 14913 days ago · 1 km deep · 3 km away
  42. 2.73 km SW of Cobb, California · 14913 days ago · 1 km deep · 3 km away
  43. 2.9Northern California · 14913 days ago · 2 km deep · 2 km away
  44. 1.7Northern California · 14913 days ago · 2 km deep · 2 km away
  45. 1.96 km WNW of Cobb, California · 14912 days ago · 1 km deep · 3 km away
  46. 1.912 km NE of Windsor, California · 14912 days ago · 6 km deep · 20 km away
  47. 1.93 km NNE of Healdsburg, California · 14912 days ago · 6 km deep · 19 km away
  48. 2.18 km WSW of Cobb, California · 14912 days ago · 3 km deep · 3 km away
  49. 1.910 km ESE of Hidden Valley Lake, California · 14912 days ago · 5 km deep · 29 km away
  50. 1.614 km ESE of Hidden Valley Lake, California · 14912 days ago · -1 km deep · 32 km away
  51. 1.57 km W of Cobb, California · 14912 days ago · 3 km deep · 2 km away
  52. 1.88 km N of Upper Lake, California · 14911 days ago · 6 km deep · 49 km away
  53. 2.118 km NNW of Cazadero, California · 14911 days ago · 1 km deep · 36 km away
  54. 1.75 km NNE of Guerneville, California · 14911 days ago · 2 km deep · 34 km away
  55. 1.94 km WNW of Cobb, California · 14911 days ago · 2 km deep · 4 km away
  56. 1.64 km S of Cobb, California · 14911 days ago · 2 km deep · 6 km away
  57. 1.65 km WSW of Cobb, California · 14910 days ago · 0 km deep · 1 km away
  58. 1.810 km WSW of Cobb, California · 14910 days ago · 1 km deep · 5 km away
  59. 1.85 km W of Cobb, California · 14910 days ago · 0 km deep · 1 km away
  60. 2.79 km W of Cobb, California · 14910 days ago · -1 km deep · 4 km away

The first 60 of 178.

Before

  1. 1.65 km WSW of Cobb, California · 14922 days ago · 2 km deep · 0 km away
  2. 1.79 km WSW of Cobb, California · 14922 days ago · 2 km deep · 4 km away
  3. 1.76 km W of Cobb, California · 14923 days ago · 3 km deep · 2 km away
  4. 1.5Northern California · 14923 days ago · 1 km deep · 3 km away
  5. 2.36 km W of Cobb, California · 14923 days ago · 3 km deep · 2 km away
  6. 1.55 km SW of Cobb, California · 14924 days ago · 0 km deep · 2 km away
  7. 1.51 km E of Knights Landing, California · 14924 days ago · 1 km deep · 93 km away
  8. 1.98 km W of Lodoga, California · 14925 days ago · 4 km deep · 57 km away
  9. 2.68 km W of Cobb, California · 14925 days ago · 1 km deep · 4 km away
  10. 1.84 km W of Cobb, California · 14925 days ago · 0 km deep · 1 km away
  11. 1.98 km W of Cobb, California · 14925 days ago · 1 km deep · 4 km away
  12. 1.66 km W of Cobb, California · 14926 days ago · 2 km deep · 2 km away
  13. 1.614 km ESE of Hidden Valley Lake, California · 14926 days ago · -1 km deep · 33 km away
  14. 1.66 km ENE of Brooktrails, California · 14927 days ago · 7 km deep · 88 km away
  15. 1.76 km WSW of Calistoga, California · 14928 days ago · 1 km deep · 30 km away
  16. 1.97 km W of Cobb, California · 14928 days ago · 1 km deep · 3 km away
  17. 2.17 km W of Cobb, California · 14928 days ago · 1 km deep · 3 km away
  18. 1.914 km E of Angwin, California · 14929 days ago · 1 km deep · 49 km away
  19. 1.66 km W of Cobb, California · 14929 days ago · 2 km deep · 2 km away
  20. 2.15 km SW of Cobb, California · 14929 days ago · 1 km deep · 3 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc61189. Read Mon, Sep 28, 2026, 10:13 PM UTC.