California earthquakes

M1.8 earthquake 11 km NNE of Angwin, California

A magnitude 1.8 earthquake struck 11 km NNE of Angwin, California on Fri, Nov 7, 1975, 9:59 AM PST (17:59 UTC), 6 km (3 mi) below the surface.

A larger quake followed: M2.3 5 km WSW of Rutherford, 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
1.8 (md), micro
Local time
UTC
1975-11-07 17:59:41 UTC
Depth
5.6 km (3.5 mi), shallow
Epicenter
38.670° N, 122.400° 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 0.5 km horizontally, 1.6 km in depth
Magnitude uncertainty
±0.22
Depth from
From location
Station coverage gap
205°, poorly surrounded by stations
Stations used
12

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 62 in the 60 days after this one and 25 in the 30 days before it.

After

  1. 2.35 km WSW of Rutherford, California · 18582 days ago · 11 km deep · 26 km away
  2. 1.96 km WSW of Cobb, California · 18581 days ago · 1 km deep · 38 km away
  3. 1.86 km W of Cobb, California · 18581 days ago · 1 km deep · 39 km away
  4. 1.56 km WSW of Cobb, California · 18580 days ago · 1 km deep · 38 km away
  5. 1.84 km WSW of Cobb, California · 18580 days ago · 3 km deep · 36 km away
  6. 1.66 km WSW of Cobb, California · 18577 days ago · 1 km deep · 38 km away
  7. 2.719 km SW of Stonyford, California · 18574 days ago · 10 km deep · 71 km away
  8. 1.89 km NW of Cobb, California · 18573 days ago · 2 km deep · 42 km away
  9. 2.28 km WSW of Cobb, California · 18572 days ago · -1 km deep · 39 km away
  10. 1.86 km W of Cobb, California · 18571 days ago · 3 km deep · 38 km away
  11. 1.55 km SE of Clear Lake Riviera, California · 18570 days ago · 2 km deep · 37 km away
  12. 1.76 km W of Cobb, California · 18570 days ago · 4 km deep · 38 km away
  13. 2.47 km NE of Sonoma, California · 18569 days ago · 11 km deep · 36 km away
  14. 1.94 km W of Cobb, California · 18565 days ago · 4 km deep · 36 km away
  15. 1.911 km NE of Angwin, California · 18565 days ago · 11 km deep · 4 km away
  16. 2.07 km NNE of Pittsburg, California · 18563 days ago · 14 km deep · 80 km away
  17. 1.73 km ESE of Cloverdale, California · 18562 days ago · 3 km deep · 52 km away
  18. 2.23 km NNW of Larkfield-Wikiup, California · 18561 days ago · 5 km deep · 35 km away
  19. 1.76 km W of Cobb, California · 18561 days ago · 0 km deep · 38 km away
  20. 1.61 km NE of Clear Lake Riviera, California · 18560 days ago · 1 km deep · 42 km away
  21. 2.23 km N of Pittsburg, California · 18560 days ago · 18 km deep · 81 km away
  22. 2.01 km NE of Danville, California · 18559 days ago · 7 km deep · 100 km away
  23. 1.67 km W of Cobb, California · 18559 days ago · 3 km deep · 39 km away
  24. 1.98 km WSW of Cobb, California · 18559 days ago · 4 km deep · 38 km away
  25. 2.35 km E of Vallejo, California · 18558 days ago · 7 km deep · 65 km away
  26. 2.1Northern California · 18558 days ago · 8 km deep · 100 km away
  27. 2.04 km WNW of Orinda, California · 18558 days ago · 8 km deep · 88 km away
  28. 1.7Northern California · 18557 days ago · 9 km deep · 36 km away
  29. 1.84 km SE of Clear Lake Riviera, California · 18554 days ago · 2 km deep · 37 km away
  30. 1.81 km NW of Danville, California · 18554 days ago · 8 km deep · 99 km away
  31. 3.01 km NW of Rollingwood, California · 18552 days ago · 7 km deep · 78 km away
  32. 2.51 km N of San Pablo, California · 18552 days ago · 6 km deep · 78 km away
  33. 1.67 km W of Cobb, California · 18551 days ago · 4 km deep · 39 km away
  34. 2.16 km SSW of Boonville, California · 18551 days ago · 6 km deep · 92 km away
  35. 2.8Northern California · 18548 days ago · 6 km deep · 37 km away
  36. 1.6near the coast of Northern California · 18548 days ago · 6 km deep · 78 km away
  37. 2.33 km NNW of Larkfield-Wikiup, California · 18548 days ago · 4 km deep · 35 km away
  38. 1.64 km NW of Soda Bay, California · 18545 days ago · 3 km deep · 55 km away
  39. 3.16 km W of Cobb, California · 18545 days ago · -1 km deep · 38 km away
  40. 1.66 km W of Cobb, California · 18545 days ago · 4 km deep · 38 km away
  41. 1.9Northern California · 18544 days ago · -1 km deep · 37 km away
  42. 1.67 km W of Cobb, California · 18543 days ago · 3 km deep · 39 km away
  43. 2.48 km WSW of Cobb, California · 18542 days ago · 3 km deep · 38 km away
  44. 2.88 km ESE of Talmage, California · 18542 days ago · 7 km deep · 75 km away
  45. 2.07 km WSW of Hopland, California · 18539 days ago · 5 km deep · 75 km away
  46. 1.67 km WSW of Cobb, California · 18539 days ago · 1 km deep · 38 km away
  47. 2.17 km W of Cobb, California · 18537 days ago · 0 km deep · 40 km away
  48. 2.27 km W of Cobb, California · 18537 days ago · 1 km deep · 39 km away
  49. 2.222 km NE of Potter Valley, California · 18534 days ago · 8 km deep · 96 km away
  50. 3.318 km NE of Upper Lake, California · 18534 days ago · 10 km deep · 77 km away
  51. 2.220 km WSW of Stonyford, California · 18534 days ago · 8 km deep · 79 km away
  52. 2.26 km WSW of Cobb, California · 18532 days ago · 3 km deep · 38 km away
  53. 2.419 km NE of Upper Lake, California · 18532 days ago · 9 km deep · 77 km away
  54. 1.611 km NNE of Hopland, California · 18529 days ago · 6 km deep · 72 km away
  55. 1.5Northern California · 18528 days ago · 3 km deep · 46 km away
  56. 1.81 km ENE of Alamo, California · 18525 days ago · 13 km deep · 97 km away
  57. 1.90 km NNE of San Pablo, California · 18524 days ago · 5 km deep · 78 km away
  58. 2.420 km WSW of Stonyford, California · 18524 days ago · 6 km deep · 77 km away
  59. 1.66 km W of Cobb, California · 18524 days ago · 3 km deep · 38 km away
  60. 1.64 km WSW of Cobb, California · 18524 days ago · 1 km deep · 35 km away

The first 60 of 62.

Before

  1. 2.02 km ENE of Berkeley, California · 18583 days ago · 10 km deep · 89 km away
  2. 1.66 km WSW of Cobb, California · 18586 days ago · 1 km deep · 37 km away
  3. 1.87 km N of Hopland, California · 18587 days ago · 5 km deep · 74 km away
  4. 1.71 km NW of Larkfield-Wikiup, California · 18590 days ago · 0 km deep · 36 km away
  5. 1.64 km WSW of Cobb, California · 18590 days ago · 1 km deep · 35 km away
  6. 1.7Northern California · 18590 days ago · 4 km deep · 92 km away
  7. 1.77 km SSE of Talmage, California · 18591 days ago · 5 km deep · 77 km away
  8. 2.37 km N of Pittsburg, California · 18593 days ago · 15 km deep · 78 km away
  9. 2.53 km NE of Benicia, California · 18593 days ago · 10 km deep · 71 km away
  10. 1.61 km NE of Benicia, California · 18593 days ago · 7 km deep · 71 km away
  11. 1.67 km W of Cobb, California · 18596 days ago · 3 km deep · 39 km away
  12. 2.17 km W of Cobb, California · 18596 days ago · 0 km deep · 39 km away
  13. 2.214 km NNW of Moskowite Corner, California · 18598 days ago · 10 km deep · 17 km away
  14. 3.313 km E of Angwin, California · 18598 days ago · 11 km deep · 16 km away
  15. 2.313 km E of Angwin, California · 18598 days ago · 12 km deep · 16 km away
  16. 1.54 km SSE of Clear Lake Riviera, California · 18600 days ago · 2 km deep · 38 km away
  17. 1.67 km W of Cobb, California · 18602 days ago · 0 km deep · 39 km away
  18. 2.44 km SW of Glen Ellen, California · 18607 days ago · 9 km deep · 40 km away
  19. 1.63 km NE of Diablo, California · 18607 days ago · 5 km deep · 100 km away
  20. 2.20 km E of Waldon, California · 18608 days ago · 13 km deep · 88 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1027382. Read Tue, Sep 22, 2026, 3:25 PM UTC.