California earthquakes

M2.1 earthquake 38 km SW of Ferndale, California

A magnitude 2.1 earthquake struck 38 km SW of Ferndale, California on Fri, Feb 20, 1981, 12:06 PM PST (20:06 UTC), 22 km (14 mi) below the surface.

A larger quake followed: M2.4 5 km WNW of Samoa, California. This one was a foreshock.

Ferndale 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
2.1 (md), micro
Local time
UTC
1981-02-20 20:06:09 UTC
Depth
21.8 km (13.6 mi), shallow
Epicenter
40.309° N, 124.548° 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 1.8 km horizontally, 1.2 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
262°, poorly surrounded by stations
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: 166 in the 60 days after this one and 33 in the 30 days before it.

After

  1. 2.114 km WSW of Mad River, California · 16648 days ago · 27 km deep · 75 km away
  2. 2.45 km WNW of Samoa, California · 16648 days ago · 8 km deep · 63 km away
  3. 2.144 km W of Trinidad, California · 16648 days ago · 4 km deep · 77 km away
  4. 2.161 km WNW of Indianola, California · 16647 days ago · 11 km deep · 67 km away
  5. 2.2Northern California · 16646 days ago · 26 km deep · 86 km away
  6. 1.639 km SW of Ferndale, California · 16646 days ago · 24 km deep · 6 km away
  7. 2.531 km SW of Ferndale, California · 16645 days ago · 39 km deep · 7 km away
  8. 2.343 km SW of Ferndale, California · 16645 days ago · 12 km deep · 5 km away
  9. 2.219 km SW of Scotia, California · 16644 days ago · 16 km deep · 23 km away
  10. 3.230 km W of Indianola, California · 16643 days ago · 50 km deep · 47 km away
  11. 2.617 km W of Big Lagoon, California · 16642 days ago · 29 km deep · 96 km away
  12. 3.023 km WNW of Trinidad, California · 16642 days ago · 18 km deep · 89 km away
  13. 2.363 km WSW of Ferndale, California · 16641 days ago · 11 km deep · 39 km away
  14. 2.630 km SW of Scotia, California · 16641 days ago · 23 km deep · 19 km away
  15. 3.6118 km W of Ferndale, California · 16640 days ago · 5 km deep · 98 km away
  16. 2.540 km W of Big Lagoon, California · 16640 days ago · 5 km deep · 97 km away
  17. 1.951 km W of Trinidad, California · 16638 days ago · 2 km deep · 85 km away
  18. 2.11 km NE of Scotia, California · 16638 days ago · 22 km deep · 44 km away
  19. 1.921 km SW of Ferndale, California · 16638 days ago · 21 km deep · 17 km away
  20. 2.18 km E of Scotia, California · 16637 days ago · 22 km deep · 50 km away
  21. 2.240 km WNW of Shelter Cove, California · 16637 days ago · -1 km deep · 12 km away
  22. 2.712 km WNW of Ferndale, California · 16636 days ago · 12 km deep · 39 km away
  23. 2.06 km NW of Ferndale, California · 16636 days ago · 14 km deep · 40 km away
  24. 2.32 km WNW of Weott, California · 16636 days ago · -1 km deep · 51 km away
  25. 3.534 km SW of Ferndale, California · 16635 days ago · 26 km deep · 11 km away
  26. 1.65 km SSW of Trinidad, California · 16634 days ago · 11 km deep · 84 km away
  27. 3.536 km SW of Ferndale, California · 16633 days ago · 26 km deep · 2 km away
  28. 3.337 km SW of Ferndale, California · 16633 days ago · 27 km deep · 2 km away
  29. 3.136 km SW of Ferndale, California · 16633 days ago · 25 km deep · 2 km away
  30. 2.110 km SW of Ferndale, California · 16633 days ago · 17 km deep · 28 km away
  31. 2.433 km SW of Ferndale, California · 16632 days ago · 38 km deep · 5 km away
  32. 1.81 km NW of McKinleyville, California · 16632 days ago · 4 km deep · 81 km away
  33. 2.6117 km W of Ferndale, California · 16632 days ago · 4 km deep · 95 km away
  34. 2.06 km NW of Manila, California · 16631 days ago · 12 km deep · 70 km away
  35. 2.1off the coast of Northern California · 16630 days ago · 3 km deep · 52 km away
  36. 2.444 km SW of Ferndale, California · 16629 days ago · 20 km deep · 8 km away
  37. 3.036 km SW of Ferndale, California · 16629 days ago · 27 km deep · 2 km away
  38. 1.735 km SW of Ferndale, California · 16629 days ago · 11 km deep · 3 km away
  39. 2.679 km WSW of Ferndale, California · 16629 days ago · 7 km deep · 52 km away
  40. 3.738 km SW of Ferndale, California · 16629 days ago · 26 km deep · 4 km away
  41. 2.167 km W of Ferndale, California · 16627 days ago · 5 km deep · 47 km away
  42. 2.3115 km W of Ferndale, California · 16627 days ago · 4 km deep · 96 km away
  43. 3.036 km SW of Ferndale, California · 16627 days ago · 26 km deep · 2 km away
  44. 3.238 km SW of Ferndale, California · 16627 days ago · 25 km deep · 5 km away
  45. 3.0111 km WSW of Ferndale, California · 16626 days ago · 4 km deep · 86 km away
  46. 2.03 km NW of Myers Flat, California · 16626 days ago · 28 km deep · 55 km away
  47. 2.838 km SW of Ferndale, California · 16626 days ago · 25 km deep · 5 km away
  48. 1.715 km ENE of Blue Lake, California · 16624 days ago · 22 km deep · 93 km away
  49. 3.281 km W of Indianola, California · 16624 days ago · 19 km deep · 76 km away
  50. 2.243 km SW of Ferndale, California · 16623 days ago · 24 km deep · 9 km away
  51. 1.92 km N of Humboldt Hill, California · 16623 days ago · 19 km deep · 58 km away
  52. 2.324 km WNW of Samoa, California · 16622 days ago · 4 km deep · 64 km away
  53. 2.417 km WNW of Ferndale, California · 16622 days ago · 26 km deep · 34 km away
  54. 4.015 km W of Ferndale, California · 16622 days ago · 26 km deep · 34 km away
  55. 2.639 km SW of Ferndale, California · 16621 days ago · 25 km deep · 6 km away
  56. 1.511 km W of Mad River, California · 16621 days ago · 0 km deep · 78 km away
  57. 2.818 km WSW of Ferndale, California · 16620 days ago · 17 km deep · 22 km away
  58. 1.723 km W of Ferndale, California · 16619 days ago · 19 km deep · 28 km away
  59. 1.725 km ENE of Hydesville, California · 16618 days ago · 7 km deep · 71 km away
  60. 1.913 km W of Trinidad, California · 16618 days ago · 14 km deep · 87 km away

The first 60 of 166.

Before

  1. 1.725 km SW of Scotia, California · 16650 days ago · 13 km deep · 19 km away
  2. 2.454 km WNW of Ferndale, California · 16651 days ago · 3 km deep · 51 km away
  3. 3.374 km W of Indianola, California · 16652 days ago · 3 km deep · 72 km away
  4. 2.326 km SSW of Ferndale, California · 16652 days ago · 19 km deep · 13 km away
  5. 2.120 km WSW of Weott, California · 16652 days ago · 7 km deep · 36 km away
  6. 1.84 km NNE of Hydesville, California · 16652 days ago · 14 km deep · 50 km away
  7. 2.325 km SSW of Ferndale, California · 16652 days ago · 19 km deep · 14 km away
  8. 2.568 km W of Indianola, California · 16653 days ago · 20 km deep · 66 km away
  9. 2.927 km SW of Ferndale, California · 16653 days ago · 25 km deep · 11 km away
  10. 2.840 km SW of Ferndale, California · 16653 days ago · 23 km deep · 7 km away
  11. 2.919 km W of Hyampom, California · 16655 days ago · 27 km deep · 80 km away
  12. 2.113 km WSW of Trinidad, California · 16655 days ago · 9 km deep · 80 km away
  13. 2.232 km WNW of Samoa, California · 16656 days ago · 4 km deep · 68 km away
  14. 2.637 km SW of Ferndale, California · 16657 days ago · 22 km deep · 2 km away
  15. 2.232 km WSW of Ferndale, California · 16658 days ago · 24 km deep · 13 km away
  16. 2.232 km WNW of Samoa, California · 16658 days ago · 4 km deep · 73 km away
  17. 3.153 km W of Ferndale, California · 16658 days ago · 55 km deep · 36 km away
  18. 1.920 km NE of Redcrest, California · 16661 days ago · 8 km deep · 68 km away
  19. 2.941 km SW of Ferndale, California · 16661 days ago · 25 km deep · 8 km away
  20. 2.637 km W of Trinidad, California · 16663 days ago · 19 km deep · 81 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1060596. Read Tue, Sep 22, 2026, 5:27 PM UTC.