California earthquakes

M1.7 earthquake 14 km NNE of Angwin, California

A magnitude 1.7 earthquake struck 14 km NNE of Angwin, California on Tue, Dec 6, 1983, 7:42 PM PST (03:42 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M3.1 7 km W of Cobb, California. This one was a foreshock.

Angwin 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
1983-12-07 03:42:35 UTC
Depth
9.0 km (5.6 mi), shallow
Epicenter
38.694° N, 122.384° 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, 2.1 km in depth
Magnitude uncertainty
±0.24
Depth from
From location
Station coverage gap
127°
Stations used
8

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 158 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 3.17 km W of Cobb, California · 15617 days ago · 1 km deep · 39 km away
  2. 1.76 km W of Cobb, California · 15617 days ago · 3 km deep · 38 km away
  3. 2.928 km WNW of Stonyford, California · 15616 days ago · 4 km deep · 96 km away
  4. 1.66 km W of Cobb, California · 15616 days ago · 3 km deep · 38 km away
  5. 2.21 km SSE of East Richmond Heights, California · 15616 days ago · 4 km deep · 85 km away
  6. 1.54 km NW of Redwood Valley, California · 15615 days ago · 7 km deep · 100 km away
  7. 1.84 km S of Cobb, California · 15615 days ago · 1 km deep · 31 km away
  8. 1.711 km NE of Healdsburg, California · 15614 days ago · 5 km deep · 33 km away
  9. 1.56 km W of Cobb, California · 15614 days ago · 3 km deep · 38 km away
  10. 2.47 km W of Cobb, California · 15614 days ago · 2 km deep · 39 km away
  11. 2.25 km WSW of Cobb, California · 15614 days ago · 0 km deep · 37 km away
  12. 2.36 km WSW of Cobb, California · 15614 days ago · 0 km deep · 37 km away
  13. 1.97 km WSW of Cobb, California · 15613 days ago · 0 km deep · 38 km away
  14. 2.26 km W of Cobb, California · 15613 days ago · 3 km deep · 39 km away
  15. 1.58 km WSW of Cobb, California · 15612 days ago · 3 km deep · 39 km away
  16. 1.56 km WSW of Cobb, California · 15612 days ago · 1 km deep · 38 km away
  17. 1.66 km W of Cobb, California · 15611 days ago · 3 km deep · 38 km away
  18. 2.26 km W of Cobb, California · 15610 days ago · 3 km deep · 39 km away
  19. 1.88 km WSW of Cobb, California · 15610 days ago · 1 km deep · 40 km away
  20. 1.66 km WSW of Cobb, California · 15610 days ago · 4 km deep · 38 km away
  21. 2.37 km W of Cobb, California · 15610 days ago · 0 km deep · 40 km away
  22. 1.77 km W of Cobb, California · 15610 days ago · 1 km deep · 40 km away
  23. 2.013 km WSW of Esparto, California · 15610 days ago · 8 km deep · 22 km away
  24. 2.47 km WSW of Cobb, California · 15609 days ago · 1 km deep · 39 km away
  25. 2.16 km S of Clear Lake Riviera, California · 15609 days ago · -1 km deep · 37 km away
  26. 1.75 km WSW of Cobb, California · 15609 days ago · -1 km deep · 37 km away
  27. 2.57 km W of Cobb, California · 15609 days ago · 2 km deep · 39 km away
  28. 1.69 km WSW of Cobb, California · 15607 days ago · 2 km deep · 40 km away
  29. 1.610 km SE of Boonville, California · 15607 days ago · 2 km deep · 83 km away
  30. 1.56 km WSW of Cobb, California · 15606 days ago · 0 km deep · 38 km away
  31. 2.06 km SW of Glen Ellen, California · 15606 days ago · 9 km deep · 44 km away
  32. 2.28 km WSW of Cobb, California · 15605 days ago · 4 km deep · 39 km away
  33. 1.77 km W of North Lakeport, California · 15605 days ago · 12 km deep · 68 km away
  34. 1.67 km WSW of Cobb, California · 15605 days ago · 1 km deep · 39 km away
  35. 1.86 km W of Cobb, California · 15604 days ago · 3 km deep · 39 km away
  36. 2.213 km NNE of Angwin, California · 15604 days ago · -1 km deep · 1 km away
  37. 1.56 km W of Cobb, California · 15603 days ago · 3 km deep · 38 km away
  38. 1.67 km WSW of Cobb, California · 15602 days ago · 2 km deep · 39 km away
  39. 2.56 km SW of Glen Ellen, California · 15602 days ago · 7 km deep · 44 km away
  40. 1.67 km W of Cobb, California · 15602 days ago · 3 km deep · 39 km away
  41. 1.71 km NNE of North Gate, California · 15601 days ago · 9 km deep · 93 km away
  42. 2.66 km SW of Cobb, CA · 15601 days ago · 1 km deep · 36 km away
  43. 3.07 km W of Cobb, California · 15601 days ago · 3 km deep · 39 km away
  44. 1.77 km W of Cobb, California · 15601 days ago · 3 km deep · 39 km away
  45. 2.17 km W of Cobb, California · 15601 days ago · 3 km deep · 39 km away
  46. 1.77 km WSW of Cobb, California · 15600 days ago · 0 km deep · 39 km away
  47. 1.86 km W of Cobb, California · 15600 days ago · 3 km deep · 38 km away
  48. 2.014 km NNW of Moskowite Corner, California · 15599 days ago · 2 km deep · 18 km away
  49. 2.017 km ENE of Potter Valley, California · 15598 days ago · 7 km deep · 89 km away
  50. 1.63 km ESE of Larkfield-Wikiup, California · 15598 days ago · 8 km deep · 36 km away
  51. 1.77 km WSW of Cobb, California · 15598 days ago · 1 km deep · 39 km away
  52. 2.26 km W of Cobb, California · 15598 days ago · 3 km deep · 38 km away
  53. 1.65 km NW of Napa, California · 15597 days ago · 11 km deep · 40 km away
  54. 1.78 km W of Cobb, California · 15597 days ago · 8 km deep · 40 km away
  55. 1.77 km W of Cobb, California · 15597 days ago · 3 km deep · 39 km away
  56. 2.6Northern California · 15597 days ago · -1 km deep · 40 km away
  57. 1.65 km SSW of Calistoga, California · 15596 days ago · 6 km deep · 26 km away
  58. 1.715 km NE of Angwin, California · 15596 days ago · 20 km deep · 4 km away
  59. 1.86 km ENE of Windsor, California · 15595 days ago · 1 km deep · 35 km away
  60. 2.16 km W of Cobb, California · 15595 days ago · 1 km deep · 39 km away

The first 60 of 158.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1108111. Read Tue, Sep 22, 2026, 8:09 PM UTC.