California earthquakes

M1.7 earthquake 6 km W of Cobb, California

A magnitude 1.7 earthquake struck 6 km W of Cobb, California on Wed, Oct 31, 1990, 2:16 PM PST (22:16 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.8 5 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.

Open the live map with earthquakes

The earthquake

Magnitude
1.7 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1990-10-31 22:16:51 UTC
Depth
3.3 km (2.0 mi), shallow
Epicenter
38.825° N, 122.801° 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, 0.4 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
55°
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: 180 in the 60 days after this one and 77 in the 30 days before it.

After

  1. 1.56 km W of Cobb, California · 13122 days ago · 0 km deep · 1 km away
  2. 1.64 km SW of Cobb, California · 13121 days ago · 0 km deep · 6 km away
  3. 2.06 km WSW of Cobb, California · 13121 days ago · 1 km deep · 2 km away
  4. 1.69 km SW of Cloverdale, California · 13121 days ago · 1 km deep · 27 km away
  5. 2.84 km NE of Point Arena, California · 13120 days ago · -1 km deep · 75 km away
  6. 1.64 km W of Cobb, California · 13120 days ago · 0 km deep · 2 km away
  7. 1.912 km WSW of Willows, California · 13119 days ago · 5 km deep · 85 km away
  8. 1.89 km W of Cobb, California · 13118 days ago · 0 km deep · 3 km away
  9. 2.49 km W of Cobb, California · 13118 days ago · 1 km deep · 2 km away
  10. 2.39 km W of Cobb, California · 13118 days ago · 0 km deep · 2 km away
  11. 1.77 km W of Cobb, California · 13118 days ago · 3 km deep · 1 km away
  12. 1.64 km WSW of Cobb, California · 13117 days ago · 1 km deep · 3 km away
  13. 1.76 km W of Cobb, California · 13117 days ago · 1 km deep · 1 km away
  14. 1.92 km SW of Cobb, California · 13117 days ago · 2 km deep · 6 km away
  15. 2.07 km NE of Hidden Valley Lake, California · 13117 days ago · 12 km deep · 26 km away
  16. 1.84 km WSW of Cobb, California · 13117 days ago · 0 km deep · 3 km away
  17. 1.77 km S of Cobb, California · 13116 days ago · 1 km deep · 10 km away
  18. 1.65 km W of Glen Ellen, California · 13116 days ago · 9 km deep · 54 km away
  19. 1.87 km W of Cobb, California · 13115 days ago · 3 km deep · 1 km away
  20. 1.86 km W of Cobb, California · 13115 days ago · 3 km deep · 0 km away
  21. 1.67 km W of Cobb, California · 13115 days ago · 0 km deep · 1 km away
  22. 1.74 km SW of Cobb, California · 13115 days ago · 1 km deep · 6 km away
  23. 1.72 km NW of Green Valley, California · 13115 days ago · 9 km deep · 82 km away
  24. 2.010 km W of Cobb, California · 13114 days ago · 0 km deep · 3 km away
  25. 1.69 km W of Cobb, CA · 13114 days ago · 1 km deep · 2 km away
  26. 2.1Northern California · 13113 days ago · 1 km deep · 3 km away
  27. 1.910 km W of Cobb, California · 13113 days ago · 1 km deep · 3 km away
  28. 1.610 km E of Cloverdale, California · 13112 days ago · 5 km deep · 8 km away
  29. 1.78 km ENE of Willits, California · 13112 days ago · 3 km deep · 79 km away
  30. 1.57 km WNW of Cobb, California · 13112 days ago · 0 km deep · 1 km away
  31. 2.310 km W of Elk Creek, California · 13111 days ago · 11 km deep · 87 km away
  32. 2.57 km W of Cobb, California · 13111 days ago · 0 km deep · 1 km away
  33. 1.76 km W of Cobb, California · 13111 days ago · 1 km deep · 1 km away
  34. 2.35 km SW of Cobb, California · 13110 days ago · 2 km deep · 5 km away
  35. 2.39 km W of Cobb, California · 13110 days ago · -1 km deep · 3 km away
  36. 1.615 km NE of Upper Lake, California · 13109 days ago · 1 km deep · 48 km away
  37. 1.77 km WSW of Cobb, California · 13108 days ago · 3 km deep · 2 km away
  38. 3.16 km W of Cobb, California · 13108 days ago · 3 km deep · 1 km away
  39. 2.04 km W of Cobb, California · 13108 days ago · -1 km deep · 2 km away
  40. 1.65 km WSW of Cobb, California · 13108 days ago · 3 km deep · 2 km away
  41. 1.66 km W of Cobb, California · 13108 days ago · 3 km deep · 1 km away
  42. 2.04 km SSW of Cobb, California · 13108 days ago · 1 km deep · 6 km away
  43. 1.67 km W of Cobb, California · 13108 days ago · 3 km deep · 1 km away
  44. 2.53 km ESE of Sonoma, California · 13108 days ago · 7 km deep · 69 km away
  45. 1.79 km W of Cobb, California · 13108 days ago · 1 km deep · 2 km away
  46. 2.27 km NW of Cobb, California · 13107 days ago · 1 km deep · 4 km away
  47. 2.83 km W of Roseland, California · 13106 days ago · 6 km deep · 44 km away
  48. 1.67 km WSW of Cobb, California · 13106 days ago · 3 km deep · 2 km away
  49. 1.824 km NE of Potter Valley, California · 13105 days ago · 10 km deep · 77 km away
  50. 1.68 km E of Hidden Valley Lake, California · 13105 days ago · 6 km deep · 29 km away
  51. 2.05 km WSW of Cobb, California · 13105 days ago · 0 km deep · 4 km away
  52. 1.95 km WNW of Cobb, California · 13104 days ago · 1 km deep · 1 km away
  53. 2.08 km WSW of Cobb, California · 13104 days ago · 1 km deep · 3 km away
  54. 2.04 km SW of Cobb, California · 13104 days ago · 1 km deep · 6 km away
  55. 2.23 km W of Cobb, California · 13104 days ago · 0 km deep · 4 km away
  56. 2.33 km WNW of Cobb, California · 13104 days ago · 1 km deep · 4 km away
  57. 1.98 km WSW of Cobb, California · 13104 days ago · 4 km deep · 3 km away
  58. 1.56 km WSW of Cobb, California · 13103 days ago · 0 km deep · 4 km away
  59. 1.88 km NNE of Comptche, California · 13102 days ago · 6 km deep · 87 km away
  60. 1.64 km WSW of Cobb, California · 13102 days ago · 1 km deep · 3 km away

The first 60 of 180.

Before

  1. 2.024 km NE of Potter Valley, California · 13123 days ago · 9 km deep · 76 km away
  2. 2.03 km SE of Bodega Bay, California · 13124 days ago · 2 km deep · 60 km away
  3. 2.64 km WSW of Cobb, California · 13124 days ago · 1 km deep · 4 km away
  4. 2.07 km W of Cobb, California · 13124 days ago · 3 km deep · 2 km away
  5. 1.66 km E of Santa Rosa, California · 13125 days ago · 0 km deep · 44 km away
  6. 1.97 km W of Cobb, California · 13125 days ago · 4 km deep · 1 km away
  7. 1.62 km NNE of Talmage, California · 13126 days ago · 5 km deep · 48 km away
  8. 1.62 km NNE of Talmage, California · 13126 days ago · 5 km deep · 48 km away
  9. 1.76 km E of Santa Rosa, California · 13126 days ago · 0 km deep · 44 km away
  10. 1.94 km W of Cobb, California · 13126 days ago · 0 km deep · 2 km away
  11. 1.76 km E of Santa Rosa, California · 13126 days ago · 1 km deep · 44 km away
  12. 1.67 km S of Cobb, California · 13126 days ago · 2 km deep · 11 km away
  13. 1.86 km E of Santa Rosa, California · 13127 days ago · 0 km deep · 44 km away
  14. 2.510 km N of Cloverdale, California · 13127 days ago · -1 km deep · 21 km away
  15. 2.16 km SW of Cobb, California · 13128 days ago · 0 km deep · 6 km away
  16. 2.25 km WSW of Cobb, California · 13129 days ago · 0 km deep · 4 km away
  17. 2.54 km WSW of Cobb, California · 13130 days ago · 2 km deep · 4 km away
  18. 1.712 km ESE of Hidden Valley Lake, California · 13131 days ago · 5 km deep · 33 km away
  19. 1.710 km NW of Cobb, California · 13131 days ago · 0 km deep · 6 km away
  20. 1.66 km ESE of Hopland, California · 13131 days ago · 4 km deep · 26 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc201322. Read Sun, Oct 4, 2026, 8:17 PM UTC.