California earthquakes

M1.7 earthquake 9 km WSW of Rio Dell, California

A magnitude 1.7 earthquake struck 9 km WSW of Rio Dell, California on Sun, Nov 1, 1981, 9:50 AM PST (17:50 UTC), 23 km (14 mi) below the surface.

A larger quake followed: M2.6 41 km SW of Ferndale, CA. This one was a foreshock.

Rio Dell 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
1981-11-01 17:50:16 UTC
Depth
22.5 km (14.0 mi), shallow
Epicenter
40.474° N, 124.210° 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, 0.4 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
81°
Stations used
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 113 in the 60 days after this one and 86 in the 30 days before it.

After

  1. 2.641 km SW of Ferndale, CA · 16396 days ago · 26 km deep · 37 km away
  2. 1.835 km SW of Ferndale, California · 16396 days ago · 36 km deep · 32 km away
  3. 3.257 km WSW of Ferndale, California · 16395 days ago · 20 km deep · 58 km away
  4. 2.137 km SW of Ferndale, California · 16394 days ago · 26 km deep · 35 km away
  5. 1.628 km SW of Ferndale, California · 16393 days ago · 20 km deep · 25 km away
  6. 2.117 km W of Laytonville, California · 16393 days ago · -1 km deep · 99 km away
  7. 2.138 km SW of Ferndale, California · 16393 days ago · 27 km deep · 35 km away
  8. 2.038 km SW of Ferndale, California · 16393 days ago · 29 km deep · 35 km away
  9. 1.536 km SW of Ferndale, California · 16393 days ago · 21 km deep · 32 km away
  10. 1.836 km SW of Ferndale, California · 16392 days ago · 27 km deep · 32 km away
  11. 3.422 km WNW of Trinidad, California · 16392 days ago · 25 km deep · 72 km away
  12. 2.137 km SW of Ferndale, California · 16391 days ago · 22 km deep · 33 km away
  13. 1.817 km W of Laytonville, California · 16391 days ago · -1 km deep · 98 km away
  14. 2.623 km WSW of Trinidad, California · 16391 days ago · 13 km deep · 63 km away
  15. 1.55 km E of Willow Creek, California · 16391 days ago · 20 km deep · 74 km away
  16. 1.829 km WSW of Ferndale, California · 16391 days ago · 25 km deep · 30 km away
  17. 1.731 km SW of Scotia, California · 16391 days ago · 4 km deep · 27 km away
  18. 2.231 km WSW of Ferndale, California · 16390 days ago · 16 km deep · 33 km away
  19. 1.616 km WSW of Scotia, California · 16390 days ago · 30 km deep · 9 km away
  20. 1.8near the coast of Northern California · 16389 days ago · 30 km deep · 35 km away
  21. 1.831 km SW of Ferndale, California · 16389 days ago · 29 km deep · 31 km away
  22. 1.86 km S of Blue Lake, California · 16388 days ago · 4 km deep · 43 km away
  23. 3.037 km SW of Ferndale, California · 16387 days ago · 28 km deep · 33 km away
  24. 3.336 km SW of Ferndale, California · 16387 days ago · 29 km deep · 33 km away
  25. 1.734 km SW of Ferndale, California · 16387 days ago · 35 km deep · 29 km away
  26. 2.238 km SW of Ferndale, California · 16387 days ago · 27 km deep · 35 km away
  27. 1.730 km SSW of Ferndale, California · 16387 days ago · 32 km deep · 25 km away
  28. 2.738 km SW of Ferndale, CA · 16387 days ago · 27 km deep · 34 km away
  29. 2.538 km SW of Ferndale, California · 16387 days ago · 21 km deep · 35 km away
  30. 1.529 km SSW of Ferndale, California · 16386 days ago · 31 km deep · 24 km away
  31. 2.9near the coast of Northern California · 16386 days ago · 23 km deep · 39 km away
  32. 2.639 km SW of Ferndale, California · 16386 days ago · 35 km deep · 37 km away
  33. 2.840 km SW of Ferndale, California · 16386 days ago · 24 km deep · 38 km away
  34. 4.036 km SW of Ferndale, California · 16386 days ago · 27 km deep · 33 km away
  35. 3.238 km SW of Ferndale, California · 16386 days ago · 26 km deep · 34 km away
  36. 1.524 km SW of Ferndale, California · 16385 days ago · 17 km deep · 21 km away
  37. 2.33 km WSW of McKinleyville, California · 16385 days ago · 4 km deep · 51 km away
  38. 1.741 km SSW of Ferndale, California · 16384 days ago · 15 km deep · 35 km away
  39. 2.834 km SSW of Ferndale, California · 16383 days ago · 30 km deep · 30 km away
  40. 2.919 km WSW of Ferndale, California · 16383 days ago · 24 km deep · 21 km away
  41. 2.1Northern California · 16382 days ago · 23 km deep · 72 km away
  42. 2.2near the coast of Northern California · 16382 days ago · 18 km deep · 18 km away
  43. 2.652 km W of Ferndale, California · 16382 days ago · 14 km deep · 59 km away
  44. 2.523 km WSW of Weott, California · 16379 days ago · 9 km deep · 27 km away
  45. 3.06 km W of Big Lagoon, California · 16379 days ago · 14 km deep · 76 km away
  46. 2.051 km SW of Ferndale, California · 16379 days ago · 17 km deep · 49 km away
  47. 1.720 km WSW of Weott, California · 16378 days ago · 5 km deep · 27 km away
  48. 1.623 km NNW of Shelter Cove, California · 16378 days ago · 11 km deep · 28 km away
  49. 1.710 km W of Indianola, California · 16378 days ago · 19 km deep · 26 km away
  50. 2.411 km ENE of Trinity Village, California · 16377 days ago · 29 km deep · 84 km away
  51. 2.438 km SW of Ferndale, California · 16377 days ago · 24 km deep · 35 km away
  52. 3.833 km W of Ferndale, California · 16377 days ago · 25 km deep · 40 km away
  53. 2.037 km SW of Ferndale, California · 16377 days ago · 15 km deep · 35 km away
  54. 1.716 km NE of Miranda, California · 16376 days ago · 16 km deep · 44 km away
  55. 3.231 km SW of Ferndale, California · 16373 days ago · 28 km deep · 29 km away
  56. 2.350 km SW of Ferndale, California · 16372 days ago · 19 km deep · 49 km away
  57. 1.941 km SW of Ferndale, California · 16372 days ago · 22 km deep · 39 km away
  58. 3.121 km SW of Ferndale, California · 16372 days ago · 23 km deep · 20 km away
  59. 3.25 km NW of Manila, California · 16372 days ago · 19 km deep · 45 km away
  60. 2.312 km WSW of Weott, California · 16372 days ago · 4 km deep · 26 km away

The first 60 of 113.

Before

  1. 2.311 km W of Indianola, California · 16396 days ago · 26 km deep · 26 km away
  2. 1.711 km E of Pine Hills, California · 16396 days ago · 25 km deep · 32 km away
  3. 1.836 km WSW of Ferndale, California · 16396 days ago · 25 km deep · 39 km away
  4. 2.616 km ESE of Pine Hills, California · 16397 days ago · 24 km deep · 31 km away
  5. 1.826 km SW of Ferndale, California · 16397 days ago · 18 km deep · 24 km away
  6. 1.718 km WSW of Ferndale, California · 16397 days ago · 22 km deep · 21 km away
  7. 3.036 km SW of Ferndale, California · 16397 days ago · 28 km deep · 33 km away
  8. 1.810 km NW of Willow Creek, California · 16398 days ago · 24 km deep · 73 km away
  9. 3.038 km SW of Ferndale, California · 16398 days ago · 29 km deep · 36 km away
  10. 1.517 km W of Ferndale, California · 16398 days ago · 22 km deep · 24 km away
  11. 2.647 km SW of Ferndale, California · 16398 days ago · 21 km deep · 46 km away
  12. 1.738 km SW of Ferndale, California · 16398 days ago · 22 km deep · 34 km away
  13. 2.63 km SE of Fortuna, California · 16398 days ago · 20 km deep · 14 km away
  14. 2.059 km W of Ferndale, California · 16399 days ago · 10 km deep · 64 km away
  15. 1.659 km SW of Ferndale, California · 16399 days ago · 6 km deep · 58 km away
  16. 1.638 km SW of Ferndale, California · 16399 days ago · 25 km deep · 34 km away
  17. 3.236 km SW of Ferndale, California · 16399 days ago · 28 km deep · 33 km away
  18. 2.635 km SW of Ferndale, California · 16399 days ago · 25 km deep · 32 km away
  19. 2.911 km W of Ferndale, California · 16399 days ago · 22 km deep · 19 km away
  20. 2.415 km W of Samoa, California · 16399 days ago · 23 km deep · 40 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1069124. Read Tue, Sep 22, 2026, 3:50 PM UTC.