California earthquakes

M1.7 earthquake 7 km WSW of Cobb, California

A magnitude 1.7 earthquake struck 7 km WSW of Cobb, California on Thu, May 20, 1982, 12:11 PM PDT (19:11 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.3 1 km N of American Canyon, 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
1.7 (md), micro
Local time
UTC
1982-05-20 19:11:58 UTC
Depth
0.3 km (0.2 mi), shallow
Epicenter
38.808° N, 122.809° 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, 0.3 km in depth
Magnitude uncertainty
±0.21
Depth from
From location
Station coverage gap
63°
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 128 in the 60 days after this one and 47 in the 30 days before it.

After

  1. 1.55 km ENE of Larkfield-Wikiup, California · 16195 days ago · 5 km deep · 31 km away
  2. 1.74 km SSW of Cobb, California · 16194 days ago · -1 km deep · 6 km away
  3. 2.31 km N of American Canyon, California · 16193 days ago · 11 km deep · 83 km away
  4. 1.815 km NNE of Brooktrails, California · 16193 days ago · 13 km deep · 96 km away
  5. 1.67 km N of Brooktrails, California · 16193 days ago · 7 km deep · 93 km away
  6. 1.67 km WSW of Cobb, California · 16192 days ago · -1 km deep · 1 km away
  7. 1.94 km SSE of Moskowite Corner, California · 16192 days ago · 1 km deep · 72 km away
  8. 2.87 km W of Cobb, California · 16192 days ago · 0 km deep · 1 km away
  9. 2.00 km NNE of Calpella, California · 16191 days ago · 7 km deep · 59 km away
  10. 2.57 km WSW of Cobb, California · 16190 days ago · 4 km deep · 1 km away
  11. 1.88 km W of Cobb, California · 16189 days ago · 0 km deep · 2 km away
  12. 2.09 km WSW of Cobb, California · 16188 days ago · 0 km deep · 2 km away
  13. 1.817 km NE of Upper Lake, California · 16187 days ago · 2 km deep · 52 km away
  14. 4.08 km WSW of Cobb, California · 16187 days ago · 1 km deep · 1 km away
  15. 2.58 km WSW of Cobb, California · 16187 days ago · 1 km deep · 1 km away
  16. 3.28 km W of Cobb, California · 16187 days ago · 0 km deep · 2 km away
  17. 1.68 km W of Cobb, California · 16187 days ago · 1 km deep · 1 km away
  18. 3.06 km WNW of Cobb, California · 16187 days ago · 0 km deep · 3 km away
  19. 1.67 km W of Cobb, California · 16187 days ago · 1 km deep · 3 km away
  20. 1.89 km WSW of Cobb, California · 16187 days ago · 0 km deep · 2 km away
  21. 2.63 km W of Calpella, California · 16187 days ago · 3 km deep · 61 km away
  22. 1.66 km WSW of Cobb, California · 16187 days ago · 1 km deep · 2 km away
  23. 1.59 km W of Cobb, California · 16187 days ago · 0 km deep · 2 km away
  24. 1.51 km W of Moskowite Corner, California · 16187 days ago · 12 km deep · 66 km away
  25. 1.99 km W of Cobb, California · 16187 days ago · 1 km deep · 2 km away
  26. 1.78 km W of Cobb, California · 16186 days ago · 2 km deep · 2 km away
  27. 2.63 km E of Windsor, California · 16183 days ago · 4 km deep · 29 km away
  28. 2.46 km W of Cobb, California · 16183 days ago · 4 km deep · 1 km away
  29. 2.83 km ENE of Talmage, California · 16182 days ago · 8 km deep · 47 km away
  30. 1.73 km E of Sonoma, California · 16182 days ago · 11 km deep · 66 km away
  31. 1.86 km W of Cobb, California · 16180 days ago · 4 km deep · 2 km away
  32. 1.74 km WSW of Cobb, California · 16179 days ago · 1 km deep · 3 km away
  33. 1.53 km E of Windsor, California · 16179 days ago · 4 km deep · 29 km away
  34. 1.822 km ENE of Potter Valley, California · 16177 days ago · 8 km deep · 63 km away
  35. 1.91 km ESE of Sonoma, California · 16176 days ago · 10 km deep · 67 km away
  36. 1.84 km WSW of Cobb, California · 16176 days ago · 4 km deep · 3 km away
  37. 1.93 km E of Calpella, CA · 16175 days ago · 4 km deep · 57 km away
  38. 1.55 km WSW of Rutherford, California · 16175 days ago · 9 km deep · 49 km away
  39. 1.85 km WSW of Cobb, California · 16173 days ago · 0 km deep · 3 km away
  40. 2.05 km WSW of Cobb, California · 16173 days ago · 0 km deep · 3 km away
  41. 1.67 km ENE of Brooktrails, California · 16173 days ago · 7 km deep · 85 km away
  42. 1.52 km E of Kelseyville, California · 16172 days ago · 13 km deep · 19 km away
  43. 1.63 km E of Windsor, California · 16171 days ago · 4 km deep · 30 km away
  44. 1.57 km NNW of Potter Valley, California · 16171 days ago · 0 km deep · 71 km away
  45. 1.93 km E of Windsor, California · 16171 days ago · 2 km deep · 29 km away
  46. 3.07 km N of Geyserville, California · 16171 days ago · 5 km deep · 10 km away
  47. 1.98 km NNW of Geyserville, California · 16171 days ago · 2 km deep · 10 km away
  48. 2.215 km NNE of Brooktrails, California · 16170 days ago · 11 km deep · 97 km away
  49. 2.04 km NE of Talmage, California · 16170 days ago · 7 km deep · 48 km away
  50. 1.92 km S of Angwin, California · 16170 days ago · 12 km deep · 43 km away
  51. 2.26 km SW of Cobb, California · 16169 days ago · 0 km deep · 4 km away
  52. 1.64 km NE of Talmage, California · 16169 days ago · 7 km deep · 48 km away
  53. 2.64 km WSW of Cobb, California · 16169 days ago · 1 km deep · 4 km away
  54. 2.110 km SE of Hopland, California · 16169 days ago · 7 km deep · 21 km away
  55. 1.76 km ENE of Eldridge, California · 16169 days ago · 6 km deep · 57 km away
  56. 2.822 km NE of Potter Valley, California · 16167 days ago · 12 km deep · 75 km away
  57. 1.622 km NE of Potter Valley, California · 16167 days ago · 13 km deep · 75 km away
  58. 2.322 km NE of Potter Valley, California · 16167 days ago · 11 km deep · 75 km away
  59. 1.922 km NE of Potter Valley, California · 16167 days ago · 11 km deep · 75 km away
  60. 1.922 km NE of Potter Valley, California · 16167 days ago · 11 km deep · 75 km away

The first 60 of 128.

Before

  1. 1.67 km WSW of Cobb, California · 16196 days ago · 0 km deep · 0 km away
  2. 2.06 km W of Cobb, California · 16196 days ago · 3 km deep · 2 km away
  3. 2.08 km ESE of Willits, California · 16197 days ago · 4 km deep · 75 km away
  4. 2.18 km N of Geyserville, California · 16197 days ago · 5 km deep · 10 km away
  5. 1.59 km WSW of Cobb, California · 16200 days ago · 2 km deep · 2 km away
  6. 1.86 km NE of Willits, California · 16201 days ago · 7 km deep · 83 km away
  7. 1.97 km E of Hidden Valley Lake, California · 16201 days ago · 8 km deep · 29 km away
  8. 2.87 km W of Cobb, California · 16203 days ago · 1 km deep · 1 km away
  9. 1.57 km W of Cobb, California · 16204 days ago · 0 km deep · 0 km away
  10. 1.823 km ENE of Potter Valley, California · 16204 days ago · 9 km deep · 66 km away
  11. 2.17 km WSW of Cobb, California · 16204 days ago · 1 km deep · 1 km away
  12. 2.47 km WSW of Cobb, California · 16205 days ago · 0 km deep · 0 km away
  13. 1.615 km WNW of Jenner, California · 16206 days ago · 2 km deep · 55 km away
  14. 2.016 km W of Jenner, California · 16206 days ago · 1 km deep · 57 km away
  15. 1.820 km NNE of Upper Lake, California · 16206 days ago · 12 km deep · 59 km away
  16. 1.64 km NW of Montalvin, California · 16209 days ago · 9 km deep · 95 km away
  17. 1.610 km ESE of Willits, California · 16210 days ago · 8 km deep · 73 km away
  18. 1.57 km W of Cobb, California · 16210 days ago · 2 km deep · 0 km away
  19. 1.69 km ESE of Willits, California · 16211 days ago · 7 km deep · 75 km away
  20. 2.65 km E of Penngrove, California · 16211 days ago · 6 km deep · 60 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1074598. Read Tue, Sep 22, 2026, 5:27 PM UTC.