California earthquakes

M1.9 earthquake 12 km W of Mad River, California

A magnitude 1.9 earthquake struck 12 km W of Mad River, California on Mon, Feb 2, 1981, 5:47 PM PST (01:47 UTC), 2 km (2 mi) below the surface.

A larger quake followed: M4.3 38 km SW of Ferndale, California. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.9 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1981-02-03 01:47:43 UTC
Depth
2.5 km (1.5 mi), shallow
Epicenter
40.440° N, 123.657° 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 0.8 km horizontally, 3.2 km in depth
Depth from
From location
Station coverage gap
229°, poorly surrounded by stations
Stations used
3

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 121 in the 60 days after this one and 86 in the 30 days before it.

After

  1. 2.03 km NE of Redway, California · 16679 days ago · 20 km deep · 35 km away
  2. 1.910 km W of Rio Dell, California · 16678 days ago · 20 km deep · 48 km away
  3. 2.19 km W of Rio Dell, California · 16678 days ago · 20 km deep · 48 km away
  4. 1.712 km WNW of Trinidad, California · 16678 days ago · 13 km deep · 89 km away
  5. 2.638 km SW of Ferndale, California · 16677 days ago · 25 km deep · 80 km away
  6. 2.010 km N of Covelo, California · 16676 days ago · 8 km deep · 72 km away
  7. 2.09 km N of Covelo, California · 16676 days ago · 5 km deep · 71 km away
  8. 2.210 km NNE of Covelo, California · 16676 days ago · 8 km deep · 72 km away
  9. 2.041 km SW of Ferndale, California · 16676 days ago · 13 km deep · 80 km away
  10. 3.02 km N of Fields Landing, California · 16675 days ago · 23 km deep · 58 km away
  11. 2.013 km NE of Fieldbrook, California · 16675 days ago · 5 km deep · 70 km away
  12. 2.549 km SW of Ferndale, California · 16675 days ago · 20 km deep · 92 km away
  13. 2.941 km SW of Ferndale, California · 16673 days ago · 25 km deep · 84 km away
  14. 1.920 km NE of Redcrest, California · 16673 days ago · 8 km deep · 17 km away
  15. 2.232 km WNW of Samoa, California · 16669 days ago · 4 km deep · 93 km away
  16. 2.232 km WSW of Ferndale, California · 16669 days ago · 24 km deep · 78 km away
  17. 2.637 km SW of Ferndale, California · 16669 days ago · 22 km deep · 78 km away
  18. 2.313 km SE of Hayfork, California · 16668 days ago · 9 km deep · 49 km away
  19. 2.232 km WNW of Samoa, California · 16668 days ago · 4 km deep · 92 km away
  20. 2.113 km WSW of Trinidad, California · 16667 days ago · 9 km deep · 81 km away
  21. 2.919 km W of Hyampom, California · 16666 days ago · 27 km deep · 18 km away
  22. 2.310 km SSE of Laytonville, California · 16666 days ago · 4 km deep · 95 km away
  23. 2.840 km SW of Ferndale, California · 16665 days ago · 23 km deep · 83 km away
  24. 2.927 km SW of Ferndale, California · 16665 days ago · 25 km deep · 70 km away
  25. 2.325 km SSW of Ferndale, California · 16664 days ago · 19 km deep · 64 km away
  26. 1.84 km NNE of Hydesville, California · 16664 days ago · 14 km deep · 39 km away
  27. 2.120 km WSW of Weott, California · 16663 days ago · 7 km deep · 46 km away
  28. 2.326 km SSW of Ferndale, California · 16663 days ago · 19 km deep · 65 km away
  29. 1.725 km SW of Scotia, California · 16662 days ago · 13 km deep · 58 km away
  30. 2.138 km SW of Ferndale, California · 16662 days ago · 22 km deep · 77 km away
  31. 2.114 km WSW of Mad River, California · 16660 days ago · 27 km deep · 3 km away
  32. 2.45 km WNW of Samoa, California · 16659 days ago · 8 km deep · 67 km away
  33. 2.326 km W of Paskenta, California · 16657 days ago · -1 km deep · 91 km away
  34. 2.2Northern California · 16657 days ago · 26 km deep · 18 km away
  35. 1.639 km SW of Ferndale, California · 16657 days ago · 24 km deep · 82 km away
  36. 2.531 km SW of Ferndale, California · 16657 days ago · 39 km deep · 73 km away
  37. 1.54 km N of Laytonville, California · 16657 days ago · 11 km deep · 80 km away
  38. 2.343 km SW of Ferndale, California · 16656 days ago · 12 km deep · 80 km away
  39. 2.219 km SW of Scotia, California · 16655 days ago · 16 km deep · 54 km away
  40. 3.230 km W of Indianola, California · 16654 days ago · 50 km deep · 85 km away
  41. 2.617 km W of Big Lagoon, California · 16653 days ago · 29 km deep · 99 km away
  42. 3.023 km WNW of Trinidad, California · 16653 days ago · 18 km deep · 98 km away
  43. 2.06 km NNW of Big Lagoon, California · 16652 days ago · 11 km deep · 97 km away
  44. 2.630 km SW of Scotia, California · 16652 days ago · 23 km deep · 60 km away
  45. 2.11 km NE of Scotia, California · 16650 days ago · 22 km deep · 37 km away
  46. 1.921 km SW of Ferndale, California · 16650 days ago · 21 km deep · 64 km away
  47. 2.18 km E of Scotia, California · 16649 days ago · 22 km deep · 29 km away
  48. 2.240 km WNW of Shelter Cove, California · 16648 days ago · -1 km deep · 74 km away
  49. 2.712 km WNW of Ferndale, California · 16648 days ago · 12 km deep · 66 km away
  50. 2.06 km NW of Ferndale, California · 16648 days ago · 14 km deep · 59 km away
  51. 2.32 km WNW of Weott, California · 16648 days ago · -1 km deep · 28 km away
  52. 3.534 km SW of Ferndale, California · 16646 days ago · 26 km deep · 80 km away
  53. 2.08 km WNW of Laytonville, California · 16646 days ago · 5 km deep · 79 km away
  54. 1.65 km SSW of Trinidad, California · 16645 days ago · 11 km deep · 77 km away
  55. 3.536 km SW of Ferndale, California · 16645 days ago · 26 km deep · 76 km away
  56. 3.337 km SW of Ferndale, California · 16645 days ago · 27 km deep · 77 km away
  57. 3.136 km SW of Ferndale, California · 16645 days ago · 25 km deep · 77 km away
  58. 2.110 km SW of Ferndale, California · 16644 days ago · 17 km deep · 60 km away
  59. 2.433 km SW of Ferndale, California · 16644 days ago · 38 km deep · 72 km away
  60. 1.81 km NW of McKinleyville, California · 16644 days ago · 4 km deep · 69 km away

The first 60 of 121.

Before

  1. 2.637 km SW of Ferndale, California · 16680 days ago · 27 km deep · 79 km away
  2. 2.840 km SW of Ferndale, California · 16680 days ago · 26 km deep · 82 km away
  3. 2.17 km WNW of Manila, California · 16680 days ago · 7 km deep · 70 km away
  4. 2.215 km SSE of Covelo, California · 16680 days ago · 6 km deep · 95 km away
  5. 1.950 km WSW of Ferndale, California · 16681 days ago · 15 km deep · 97 km away
  6. 2.441 km WSW of Ferndale, California · 16681 days ago · 34 km deep · 87 km away
  7. 1.826 km SW of Ferndale, California · 16682 days ago · 18 km deep · 68 km away
  8. 2.515 km WNW of Manila, California · 16683 days ago · 4 km deep · 77 km away
  9. 2.316 km WNW of Ferndale, California · 16684 days ago · 22 km deep · 69 km away
  10. 1.720 km WSW of Weott, California · 16685 days ago · 4 km deep · 46 km away
  11. 2.08 km NW of Manila, California · 16686 days ago · 23 km deep · 71 km away
  12. 2.625 km SW of Ferndale, California · 16686 days ago · 22 km deep · 71 km away
  13. 3.039 km SW of Ferndale, California · 16687 days ago · 28 km deep · 81 km away
  14. 2.937 km SW of Ferndale, California · 16688 days ago · 40 km deep · 76 km away
  15. 2.18 km WNW of Manila, California · 16689 days ago · 6 km deep · 70 km away
  16. 2.232 km SW of Ferndale, California · 16689 days ago · 15 km deep · 75 km away
  17. 2.413 km WNW of Covelo, California · 16690 days ago · 2 km deep · 69 km away
  18. 2.724 km SW of Scotia, California · 16690 days ago · 43 km deep · 56 km away
  19. 2.126 km SW of Ferndale, California · 16690 days ago · 12 km deep · 67 km away
  20. 2.215 km W of Trinidad, California · 16691 days ago · 16 km deep · 88 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1059931. Read Sun, Oct 4, 2026, 8:40 AM UTC.