California earthquakes

M1.8 earthquake 5 km N of Cobb, California

A magnitude 1.8 earthquake struck 5 km N of Cobb, California on Sun, Jun 26, 1983, 4:55 PM PDT (23:55 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M3.6 2 km SSE of Point Arena, 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, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1983-06-26 23:55:24 UTC
Depth
-0.1 km (-0.0 mi), shallow
Epicenter
38.875° N, 122.710° 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 0.4 km horizontally, 1.0 km in depth
Magnitude uncertainty
±0.23
Depth from
From location
Station coverage gap
65°
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: 189 in the 60 days after this one and 92 in the 30 days before it.

After

  1. 1.87 km WSW of Cobb, California · 15803 days ago · 2 km deep · 12 km away
  2. 1.84 km E of Boonville, California · 15802 days ago · 7 km deep · 54 km away
  3. 1.84 km W of Cobb, California · 15802 days ago · 0 km deep · 8 km away
  4. 2.16 km ENE of Santa Rosa, California · 15802 days ago · 10 km deep · 46 km away
  5. 2.57 km W of Cobb, California · 15801 days ago · 0 km deep · 11 km away
  6. 1.78 km WSW of Cobb, California · 15801 days ago · 4 km deep · 13 km away
  7. 1.73 km W of Clear Lake Riviera, California · 15801 days ago · 5 km deep · 10 km away
  8. 1.56 km ENE of Healdsburg, California · 15801 days ago · 3 km deep · 29 km away
  9. 1.77 km WSW of Cobb, California · 15800 days ago · 3 km deep · 12 km away
  10. 1.65 km SSE of Clear Lake Riviera, California · 15799 days ago · 4 km deep · 4 km away
  11. 1.814 km N of Princeton, California · 15799 days ago · 21 km deep · 96 km away
  12. 2.49 km WSW of Cobb, California · 15799 days ago · 2 km deep · 13 km away
  13. 1.713 km ESE of Hidden Valley Lake, California · 15799 days ago · 2 km deep · 29 km away
  14. 2.36 km W of Cobb, California · 15798 days ago · 3 km deep · 10 km away
  15. 2.18 km WSW of Cobb, California · 15798 days ago · 0 km deep · 13 km away
  16. 1.67 km NW of Cobb, California · 15798 days ago · -1 km deep · 6 km away
  17. 2.34 km S of Cobb, California · 15797 days ago · 0 km deep · 11 km away
  18. 1.63 km SSW of Cobb, California · 15797 days ago · 0 km deep · 10 km away
  19. 1.66 km WSW of Cobb, California · 15797 days ago · 0 km deep · 11 km away
  20. 1.77 km WSW of Cobb, California · 15796 days ago · 1 km deep · 11 km away
  21. 1.54 km NW of Redwood Valley, California · 15796 days ago · 4 km deep · 66 km away
  22. 2.07 km W of Cobb, California · 15796 days ago · 1 km deep · 11 km away
  23. 1.78 km NE of Hopland, California · 15795 days ago · 5 km deep · 34 km away
  24. 2.18 km NE of Hopland, California · 15795 days ago · 4 km deep · 34 km away
  25. 1.56 km NE of Rohnert Park, California · 15795 days ago · 0 km deep · 55 km away
  26. 2.01 km SSE of Green Valley, California · 15795 days ago · 11 km deep · 85 km away
  27. 2.314 km SE of Laytonville, California · 15795 days ago · 8 km deep · 98 km away
  28. 2.07 km W of Cobb, California · 15795 days ago · 3 km deep · 10 km away
  29. 2.37 km E of Clearlake Oaks, California · 15794 days ago · -1 km deep · 21 km away
  30. 2.07 km E of Clearlake Oaks, California · 15794 days ago · -1 km deep · 20 km away
  31. 2.16 km W of Cobb, California · 15794 days ago · 1 km deep · 10 km away
  32. 2.27 km WSW of Cobb, California · 15794 days ago · 1 km deep · 11 km away
  33. 1.618 km NNE of Upper Lake, California · 15793 days ago · -1 km deep · 48 km away
  34. 2.418 km NE of Upper Lake, California · 15793 days ago · 6 km deep · 48 km away
  35. 1.618 km NE of Upper Lake, California · 15793 days ago · 0 km deep · 48 km away
  36. 1.67 km WSW of Cobb, California · 15793 days ago · 3 km deep · 12 km away
  37. 1.68 km WSW of Cobb, California · 15793 days ago · 0 km deep · 13 km away
  38. 1.88 km W of Cobb, California · 15793 days ago · 1 km deep · 12 km away
  39. 1.67 km S of Cobb, California · 15793 days ago · -1 km deep · 14 km away
  40. 1.9Northern California · 15792 days ago · 2 km deep · 11 km away
  41. 2.415 km N of Princeton, California · 15792 days ago · 22 km deep · 97 km away
  42. 2.09 km WSW of Cobb, California · 15790 days ago · 1 km deep · 13 km away
  43. 1.5Northern California · 15790 days ago · 1 km deep · 10 km away
  44. 2.316 km ENE of Potter Valley, California · 15790 days ago · 8 km deep · 60 km away
  45. 2.6near the coast of Northern California · 15790 days ago · 8 km deep · 98 km away
  46. 2.37 km W of Cobb, California · 15790 days ago · 3 km deep · 11 km away
  47. 1.57 km WSW of Cobb, California · 15789 days ago · 2 km deep · 12 km away
  48. 1.68 km W of Cobb, California · 15789 days ago · 1 km deep · 11 km away
  49. 1.87 km W of Cobb, California · 15788 days ago · 3 km deep · 10 km away
  50. 2.17 km N of Cobb, California · 15788 days ago · 2 km deep · 3 km away
  51. 1.77 km S of Cobb, California · 15788 days ago · -1 km deep · 14 km away
  52. 1.67 km WSW of Cobb, California · 15787 days ago · 0 km deep · 12 km away
  53. 1.83 km N of Larkfield-Wikiup, California · 15787 days ago · 7 km deep · 37 km away
  54. 2.222 km W of Elk Creek, California · 15787 days ago · 4 km deep · 86 km away
  55. 1.522 km WNW of Elk Creek, California · 15787 days ago · 4 km deep · 87 km away
  56. 1.54 km NW of Redwood Valley, California · 15787 days ago · 6 km deep · 66 km away
  57. 1.86 km W of Cobb, California · 15787 days ago · 1 km deep · 10 km away
  58. 2.27 km W of Cobb, California · 15787 days ago · 2 km deep · 11 km away
  59. 1.816 km ENE of Potter Valley, California · 15786 days ago · 10 km deep · 61 km away
  60. 1.96 km WSW of Cobb, California · 15786 days ago · 1 km deep · 10 km away

The first 60 of 189.

Before

  1. 2.67 km WSW of Cobb, California · 15803 days ago · 1 km deep · 11 km away
  2. 1.84 km WSW of Cobb, California · 15803 days ago · 2 km deep · 10 km away
  3. 2.519 km NE of Potter Valley, California · 15804 days ago · 7 km deep · 67 km away
  4. 1.714 km ENE of Potter Valley, California · 15804 days ago · -1 km deep · 60 km away
  5. 1.57 km WSW of Cobb, California · 15804 days ago · 1 km deep · 11 km away
  6. 2.06 km WSW of Cobb, California · 15805 days ago · 3 km deep · 11 km away
  7. 1.61 km ESE of Geyserville, California · 15805 days ago · 5 km deep · 24 km away
  8. 1.76 km S of Green Valley, California · 15806 days ago · 7 km deep · 90 km away
  9. 1.76 km W of Cobb, California · 15806 days ago · 3 km deep · 10 km away
  10. 1.96 km E of Clearlake Oaks, California · 15806 days ago · 2 km deep · 19 km away
  11. 3.312 km N of Princeton, California · 15806 days ago · 19 km deep · 94 km away
  12. 1.64 km W of Clear Lake Riviera, California · 15808 days ago · 4 km deep · 11 km away
  13. 1.99 km WSW of Cobb, California · 15808 days ago · 1 km deep · 13 km away
  14. 1.54 km W of Clear Lake Riviera, California · 15808 days ago · 3 km deep · 10 km away
  15. 1.86 km SW of Cobb, California · 15809 days ago · 1 km deep · 11 km away
  16. 1.65 km W of Cobb, California · 15809 days ago · 1 km deep · 9 km away
  17. 3.26 km W of Cobb, California · 15809 days ago · 4 km deep · 9 km away
  18. 1.73 km W of Clear Lake Riviera, California · 15809 days ago · 3 km deep · 10 km away
  19. 2.43 km W of Clear Lake Riviera, California · 15809 days ago · 3 km deep · 10 km away
  20. 2.62 km W of Clear Lake Riviera, California · 15809 days ago · 3 km deep · 10 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1097597. Read Thu, Oct 1, 2026, 1:46 PM UTC.