California earthquakes

M1.8 earthquake 21 km SSW of Ferndale, California

A magnitude 1.8 earthquake struck 21 km SSW of Ferndale, California on Wed, Apr 1, 1981, 9:32 PM PST (05:32 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M4.6 58 km WSW of Ferndale, 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
1.8 (md), micro
Local time
UTC
1981-04-02 05:32:33 UTC
Depth
21.4 km (13.3 mi), shallow
Epicenter
40.407° N, 124.383° 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 1.4 km horizontally, 0.6 km in depth
Depth from
From location
Station coverage gap
244°, poorly surrounded by stations
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 173 in the 60 days after this one and 73 in the 30 days before it.

After

  1. 1.520 km SW of Ferndale, California · 16616 days ago · 17 km deep · 3 km away
  2. 2.014 km WNW of Mad River, California · 16616 days ago · 22 km deep · 60 km away
  3. 1.648 km WNW of Indianola, California · 16616 days ago · 3 km deep · 55 km away
  4. 2.418 km WNW of Manila, California · 16616 days ago · 17 km deep · 58 km away
  5. 3.237 km SW of Ferndale, California · 16616 days ago · 22 km deep · 17 km away
  6. 3.267 km W of Trinidad, California · 16616 days ago · 5 km deep · 95 km away
  7. 2.790 km W of Ferndale, California · 16615 days ago · 5 km deep · 80 km away
  8. 1.818 km W of Ferndale, California · 16614 days ago · 22 km deep · 20 km away
  9. 1.517 km NE of Redcrest, California · 16614 days ago · 26 km deep · 50 km away
  10. 1.812 km NE of Myers Flat, California · 16614 days ago · -1 km deep · 52 km away
  11. 1.529 km SW of Scotia, California · 16613 days ago · 19 km deep · 15 km away
  12. 2.035 km SW of Ferndale, California · 16613 days ago · 35 km deep · 16 km away
  13. 2.537 km SSW of Ferndale, California · 16612 days ago · 14 km deep · 16 km away
  14. 2.420 km SSW of Scotia, California · 16611 days ago · 11 km deep · 16 km away
  15. 1.8off the coast of Northern California · 16610 days ago · 4 km deep · 58 km away
  16. 2.338 km SW of Ferndale, California · 16610 days ago · 25 km deep · 19 km away
  17. 1.928 km SSW of Ferndale, California · 16609 days ago · 18 km deep · 7 km away
  18. 3.038 km W of Trinidad, California · 16609 days ago · 22 km deep · 78 km away
  19. 1.936 km SW of Ferndale, California · 16609 days ago · 17 km deep · 17 km away
  20. 1.826 km SSW of Ferndale, California · 16609 days ago · 33 km deep · 6 km away
  21. 2.434 km SW of Ferndale, California · 16608 days ago · 37 km deep · 15 km away
  22. 2.142 km W of Big Lagoon, California · 16608 days ago · 5 km deep · 90 km away
  23. 2.424 km SW of Scotia, California · 16607 days ago · 30 km deep · 10 km away
  24. 1.810 km W of Indianola, California · 16607 days ago · 8 km deep · 30 km away
  25. 2.446 km SW of Ferndale, California · 16607 days ago · 16 km deep · 29 km away
  26. 1.712 km NE of Myers Flat, California · 16607 days ago · 0 km deep · 52 km away
  27. 1.951 km SW of Ferndale, California · 16606 days ago · 15 km deep · 33 km away
  28. 1.626 km NW of Shelter Cove, California · 16606 days ago · 4 km deep · 24 km away
  29. 1.738 km SW of Ferndale, California · 16606 days ago · 16 km deep · 18 km away
  30. 1.74 km NNE of Redway, California · 16606 days ago · 4 km deep · 57 km away
  31. 1.821 km WSW of Burnt Ranch, California · 16606 days ago · 23 km deep · 67 km away
  32. 1.827 km W of Trinidad, California · 16606 days ago · 25 km deep · 69 km away
  33. 1.738 km SW of Ferndale, California · 16605 days ago · 24 km deep · 19 km away
  34. 2.140 km SW of Ferndale, California · 16605 days ago · 24 km deep · 20 km away
  35. 4.336 km SW of Ferndale, California · 16605 days ago · 23 km deep · 16 km away
  36. 1.7near the coast of Northern California · 16605 days ago · 24 km deep · 16 km away
  37. 3.137 km SW of Ferndale, California · 16605 days ago · 27 km deep · 17 km away
  38. 2.365 km W of Indianola, California · 16604 days ago · 20 km deep · 66 km away
  39. 2.236 km SW of Ferndale, California · 16604 days ago · 27 km deep · 16 km away
  40. 1.73 km NNE of Alderpoint, California · 16604 days ago · 33 km deep · 70 km away
  41. 1.527 km SSW of Ferndale, California · 16604 days ago · 16 km deep · 7 km away
  42. 2.038 km SW of Ferndale, California · 16604 days ago · 21 km deep · 19 km away
  43. 1.837 km SW of Ferndale, California · 16604 days ago · 21 km deep · 18 km away
  44. 1.511 km W of Mad River, California · 16604 days ago · 0 km deep · 62 km away
  45. 2.341 km SW of Ferndale, California · 16603 days ago · 24 km deep · 23 km away
  46. 1.937 km SW of Ferndale, California · 16603 days ago · 25 km deep · 17 km away
  47. 2.942 km W of Trinidad, California · 16602 days ago · 16 km deep · 72 km away
  48. 2.836 km SW of Ferndale, California · 16602 days ago · 26 km deep · 16 km away
  49. 1.534 km SW of Scotia, California · 16601 days ago · 12 km deep · 16 km away
  50. 2.938 km SW of Ferndale, California · 16601 days ago · 20 km deep · 19 km away
  51. 2.639 km SW of Ferndale, California · 16601 days ago · 23 km deep · 20 km away
  52. 3.849 km WSW of Ferndale, California · 16600 days ago · 18 km deep · 35 km away
  53. 1.647 km SW of Ferndale, California · 16600 days ago · 13 km deep · 28 km away
  54. 1.939 km SW of Ferndale, California · 16600 days ago · 20 km deep · 19 km away
  55. 2.24 km SSW of Westhaven-Moonstone, California · 16600 days ago · 15 km deep · 70 km away
  56. 2.020 km W of Big Lagoon, California · 16600 days ago · 8 km deep · 81 km away
  57. 1.725 km W of Big Lagoon, California · 16599 days ago · 3 km deep · 82 km away
  58. 2.13 km SW of Loleta, California · 16599 days ago · 21 km deep · 26 km away
  59. 1.540 km SW of Ferndale, California · 16599 days ago · 23 km deep · 20 km away
  60. 1.811 km WSW of Mad River, California · 16599 days ago · -1 km deep · 64 km away

The first 60 of 173.

Before

  1. 1.819 km SW of Ferndale, California · 16617 days ago · 18 km deep · 7 km away
  2. 2.044 km SW of Ferndale, California · 16617 days ago · 18 km deep · 26 km away
  3. 2.139 km SW of Ferndale, California · 16617 days ago · 23 km deep · 20 km away
  4. 3.041 km SW of Ferndale, California · 16618 days ago · 23 km deep · 22 km away
  5. 1.67 km NE of Myers Flat, California · 16618 days ago · 48 km deep · 49 km away
  6. 2.937 km SW of Ferndale, California · 16618 days ago · 27 km deep · 18 km away
  7. 2.439 km SW of Ferndale, California · 16618 days ago · 27 km deep · 20 km away
  8. 2.840 km SW of Ferndale, California · 16619 days ago · 23 km deep · 22 km away
  9. 4.038 km SW of Ferndale, California · 16619 days ago · 22 km deep · 19 km away
  10. 1.537 km SW of Ferndale, California · 16619 days ago · 23 km deep · 18 km away
  11. 2.438 km SW of Ferndale, California · 16619 days ago · 20 km deep · 20 km away
  12. 2.343 km SW of Ferndale, California · 16619 days ago · 19 km deep · 25 km away
  13. 3.131 km SW of Ferndale, California · 16619 days ago · 27 km deep · 11 km away
  14. 2.428 km SW of Ferndale, California · 16619 days ago · 29 km deep · 10 km away
  15. 2.937 km SW of Ferndale, California · 16619 days ago · 24 km deep · 18 km away
  16. 2.040 km SW of Ferndale, California · 16619 days ago · 26 km deep · 21 km away
  17. 1.839 km SW of Ferndale, California · 16619 days ago · 23 km deep · 21 km away
  18. 4.338 km SW of Ferndale, California · 16619 days ago · 25 km deep · 19 km away
  19. 2.014 km NE of Myers Flat, California · 16620 days ago · -1 km deep · 55 km away
  20. 3.014 km ENE of Weott, California · 16620 days ago · 2 km deep · 53 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1062004. Read Tue, Sep 29, 2026, 4:23 PM UTC.