California earthquakes

M1.8 earthquake 6 km WSW of Cobb, California

A magnitude 1.8 earthquake struck 6 km WSW of Cobb, California on Sun, Aug 15, 1982, 10:45 AM PDT (17:45 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M4.0 2 km NNE of Elk Creek, 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
1982-08-15 17:45:25 UTC
Depth
-0.2 km (-0.1 mi), shallow
Epicenter
38.801° N, 122.789° 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
±0.21
Depth from
From location
Station coverage gap
62°
Stations used
13

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 93 in the 60 days after this one and 66 in the 30 days before it.

After

  1. 2.33 km SSE of Point Arena, California · 16115 days ago · 4 km deep · 78 km away
  2. 1.82 km NNE of Princeton, California · 16114 days ago · 12 km deep · 97 km away
  3. 1.624 km NE of Potter Valley, California · 16113 days ago · 10 km deep · 79 km away
  4. 1.77 km WSW of Cobb, California · 16113 days ago · 1 km deep · 1 km away
  5. 2.717 km WNW of Elk Creek, California · 16113 days ago · -1 km deep · 95 km away
  6. 2.76 km WSW of Cobb, California · 16112 days ago · 3 km deep · 1 km away
  7. 2.10 km W of Lakeport, California · 16109 days ago · 19 km deep · 29 km away
  8. 2.92 km SW of Lakeport, California · 16109 days ago · 17 km deep · 28 km away
  9. 2.18 km ESE of Willits, California · 16109 days ago · 2 km deep · 76 km away
  10. 2.49 km WSW of Cobb, California · 16109 days ago · 2 km deep · 3 km away
  11. 1.821 km NE of Potter Valley, California · 16108 days ago · 7 km deep · 74 km away
  12. 1.66 km W of Cobb, California · 16107 days ago · 3 km deep · 3 km away
  13. 2.35 km WSW of Cobb, California · 16107 days ago · 1 km deep · 1 km away
  14. 2.11 km ENE of Clear Lake Riviera, California · 16106 days ago · 2 km deep · 19 km away
  15. 2.824 km SE of Covelo, California · 16105 days ago · 8 km deep · 94 km away
  16. 1.86 km W of Cobb, California · 16105 days ago · 3 km deep · 3 km away
  17. 1.88 km NE of Hopland, California · 16105 days ago · 5 km deep · 35 km away
  18. 1.57 km ENE of Willits, California · 16105 days ago · 8 km deep · 81 km away
  19. 1.618 km NE of Clearlake, California · 16105 days ago · 21 km deep · 40 km away
  20. 2.28 km NE of Hopland, California · 16102 days ago · 5 km deep · 34 km away
  21. 1.625 km NE of Potter Valley, California · 16102 days ago · 11 km deep · 79 km away
  22. 1.55 km NNE of Kenwood, California · 16102 days ago · 5 km deep · 45 km away
  23. 1.65 km WSW of Green Valley, California · 16100 days ago · 5 km deep · 80 km away
  24. 1.98 km E of Willits, California · 16099 days ago · 7 km deep · 78 km away
  25. 2.018 km WSW of Lodoga, California · 16098 days ago · 10 km deep · 48 km away
  26. 1.74 km SSE of Kelseyville, California · 16098 days ago · -1 km deep · 16 km away
  27. 1.94 km WSW of Cobb, California · 16098 days ago · 0 km deep · 2 km away
  28. 1.63 km ESE of Lakeport, California · 16097 days ago · 8 km deep · 26 km away
  29. 4.02 km NNE of Elk Creek, California · 16096 days ago · 13 km deep · 95 km away
  30. 1.719 km NNE of Upper Lake, California · 16096 days ago · 13 km deep · 57 km away
  31. 1.717 km E of Lower Lake, California · 16094 days ago · 2 km deep · 36 km away
  32. 1.52 km W of Redwood Valley, California · 16093 days ago · 6 km deep · 64 km away
  33. 1.519 km NNE of Upper Lake, California · 16093 days ago · 12 km deep · 57 km away
  34. 1.822 km WNW of Elk Creek, California · 16092 days ago · 6 km deep · 95 km away
  35. 2.022 km W of Elk Creek, California · 16092 days ago · 10 km deep · 91 km away
  36. 1.64 km SW of Saint Helena, California · 16092 days ago · 5 km deep · 44 km away
  37. 1.96 km WNW of Cobb, California · 16092 days ago · 1 km deep · 4 km away
  38. 1.811 km NW of Moskowite Corner, California · 16092 days ago · -1 km deep · 54 km away
  39. 3.018 km NE of Upper Lake, California · 16091 days ago · 15 km deep · 56 km away
  40. 2.318 km NNE of Upper Lake, California · 16091 days ago · 8 km deep · 56 km away
  41. 2.36 km W of Cobb, California · 16091 days ago · 3 km deep · 2 km away
  42. 1.66 km W of Cobb, California · 16091 days ago · 3 km deep · 2 km away
  43. 1.912 km N of Brooktrails, California · 16089 days ago · 7 km deep · 97 km away
  44. 1.69 km SW of Clear Lake Riviera, California · 16088 days ago · -1 km deep · 10 km away
  45. 2.210 km SW of Arbuckle, California · 16087 days ago · 7 km deep · 59 km away
  46. 1.910 km SW of Arbuckle, California · 16087 days ago · 4 km deep · 59 km away
  47. 1.912 km WSW of Hopland, California · 16086 days ago · 6 km deep · 42 km away
  48. 1.66 km W of Cobb, California · 16086 days ago · 2 km deep · 2 km away
  49. 1.913 km WSW of Arbuckle, California · 16086 days ago · 5 km deep · 54 km away
  50. 3.025 km SE of Covelo, California · 16083 days ago · 7 km deep · 93 km away
  51. 3.025 km SE of Covelo, California · 16083 days ago · 8 km deep · 93 km away
  52. 2.77 km W of Cobb, California · 16083 days ago · 1 km deep · 3 km away
  53. 1.925 km SE of Covelo, California · 16083 days ago · 6 km deep · 93 km away
  54. 1.82 km SE of Larkfield-Wikiup, California · 16083 days ago · 5 km deep · 34 km away
  55. 2.36 km SSE of Cobb, California · 16082 days ago · 1 km deep · 9 km away
  56. 2.46 km W of Cobb, California · 16082 days ago · -1 km deep · 3 km away
  57. 1.97 km W of Cobb, California · 16082 days ago · -1 km deep · 3 km away
  58. 1.75 km SW of Cobb, California · 16081 days ago · 1 km deep · 1 km away
  59. 2.06 km WSW of Cobb, California · 16081 days ago · 6 km deep · 1 km away
  60. 1.82 km ENE of Inverness, California · 16081 days ago · 2 km deep · 77 km away

The first 60 of 93.

Before

  1. 1.83 km SE of Clear Lake Riviera, California · 16117 days ago · -1 km deep · 17 km away
  2. 2.44 km SW of Green Valley, California · 16117 days ago · 12 km deep · 83 km away
  3. 1.720 km W of Elk Creek, California · 16118 days ago · 4 km deep · 90 km away
  4. 2.26 km W of Cobb, California · 16120 days ago · 3 km deep · 2 km away
  5. 1.92 km NW of Glen Ellen, California · 16121 days ago · 9 km deep · 52 km away
  6. 1.82 km NNW of Glen Ellen, California · 16121 days ago · 10 km deep · 51 km away
  7. 2.02 km NW of Glen Ellen, California · 16121 days ago · 8 km deep · 51 km away
  8. 2.022 km NE of Potter Valley, California · 16122 days ago · 1 km deep · 76 km away
  9. 2.76 km W of Cobb, California · 16123 days ago · 4 km deep · 2 km away
  10. 2.71 km NW of Rollingwood, California · 16123 days ago · 7 km deep · 100 km away
  11. 1.9Northern California · 16123 days ago · 3 km deep · 86 km away
  12. 1.65 km SW of Cobb, California · 16124 days ago · 0 km deep · 2 km away
  13. 2.35 km SW of Cobb, California · 16124 days ago · 1 km deep · 2 km away
  14. 1.75 km SW of Cobb, California · 16124 days ago · -1 km deep · 2 km away
  15. 1.85 km SW of Cobb, California · 16124 days ago · 0 km deep · 2 km away
  16. 2.45 km SW of Cobb, California · 16124 days ago · -1 km deep · 2 km away
  17. 1.66 km SW of Cobb, California · 16124 days ago · 2 km deep · 2 km away
  18. 2.86 km W of Cobb, California · 16124 days ago · 3 km deep · 2 km away
  19. 1.68 km WSW of Cobb, California · 16125 days ago · 3 km deep · 2 km away
  20. 1.83 km SSE of Clear Lake Riviera, California · 16125 days ago · 1 km deep · 16 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1077565. Read Mon, Sep 28, 2026, 9:09 PM UTC.