California earthquakes

M2.4 earthquake 5 km NNE of Mad River, California

A magnitude 2.4 earthquake struck 5 km NNE of Mad River, California on Mon, Dec 19, 1983, 7:53 PM PST (03:53 UTC), -1 km (-1 mi) below the surface.

A larger quake followed: M4.0 25 km SSW of Scotia, 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
2.4 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1983-12-20 03:53:08 UTC
Depth
-0.9 km (-0.6 mi), shallow
Epicenter
40.498° N, 123.496° 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 0.9 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
175°
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: 77 in the 60 days after this one and 39 in the 30 days before it.

After

  1. 1.734 km SW of Ferndale, California · 15627 days ago · 21 km deep · 93 km away
  2. 3.036 km SW of Ferndale, California · 15625 days ago · 24 km deep · 88 km away
  3. 2.310 km NNE of French Gulch, California · 15625 days ago · 19 km deep · 82 km away
  4. 1.529 km SW of Scotia, California · 15624 days ago · 15 km deep · 77 km away
  5. 2.426 km SW of Scotia, California · 15624 days ago · 17 km deep · 74 km away
  6. 2.436 km SSW of Ferndale, California · 15623 days ago · 24 km deep · 88 km away
  7. 1.58 km S of Ferndale, California · 15623 days ago · 22 km deep · 66 km away
  8. 1.916 km ENE of Redcrest, California · 15623 days ago · 21 km deep · 24 km away
  9. 1.717 km SSW of Ferndale, California · 15621 days ago · 21 km deep · 70 km away
  10. 1.99 km NNW of Mad River, California · 15620 days ago · 1 km deep · 7 km away
  11. 3.315 km W of Ferndale, California · 15620 days ago · 20 km deep · 80 km away
  12. 2.819 km WSW of Ferndale, California · 15619 days ago · 23 km deep · 82 km away
  13. 2.530 km SW of Scotia, California · 15618 days ago · 13 km deep · 77 km away
  14. 1.621 km NE of Redcrest, California · 15616 days ago · 6 km deep · 22 km away
  15. 1.8near the coast of Northern California · 15615 days ago · 6 km deep · 79 km away
  16. 1.612 km WSW of Mad River, California · 15615 days ago · 28 km deep · 15 km away
  17. 2.024 km W of Ferndale, California · 15615 days ago · 21 km deep · 90 km away
  18. 2.731 km SW of Scotia, California · 15615 days ago · 27 km deep · 78 km away
  19. 2.115 km ENE of Blue Lake, California · 15614 days ago · 21 km deep · 58 km away
  20. 2.54 km SE of Benbow, California · 15614 days ago · 16 km deep · 56 km away
  21. 3.026 km SW of Scotia, California · 15612 days ago · 19 km deep · 74 km away
  22. 2.13 km SSW of Scotia, California · 15611 days ago · 5 km deep · 53 km away
  23. 1.538 km SW of Ferndale, California · 15609 days ago · 21 km deep · 91 km away
  24. 1.73 km NE of Lewiston, California · 15609 days ago · 14 km deep · 66 km away
  25. 2.35 km SW of Weott, California · 15607 days ago · 4 km deep · 47 km away
  26. 1.93 km N of Redway, California · 15605 days ago · 19 km deep · 48 km away
  27. 1.921 km WSW of Ferndale, California · 15605 days ago · 23 km deep · 85 km away
  28. 1.65 km SE of Laytonville, California · 15603 days ago · 10 km deep · 95 km away
  29. 1.919 km WSW of Ferndale, California · 15602 days ago · 21 km deep · 83 km away
  30. 1.528 km WSW of Ferndale, California · 15602 days ago · 21 km deep · 92 km away
  31. 2.028 km SW of Ferndale, California · 15602 days ago · 17 km deep · 88 km away
  32. 2.03 km W of Scotia, California · 15602 days ago · 18 km deep · 55 km away
  33. 1.53 km WSW of Loleta, California · 15602 days ago · 19 km deep · 66 km away
  34. 4.025 km SSW of Scotia, California · 15602 days ago · 10 km deep · 69 km away
  35. 3.927 km SW of Scotia, California · 15602 days ago · 10 km deep · 72 km away
  36. 2.125 km SSW of Scotia, California · 15602 days ago · 8 km deep · 69 km away
  37. 3.027 km SW of Scotia, California · 15601 days ago · 9 km deep · 71 km away
  38. 2.413 km WSW of Burnt Ranch, California · 15600 days ago · 26 km deep · 31 km away
  39. 1.821 km SSW of French Gulch, California · 15600 days ago · 5 km deep · 64 km away
  40. 3.217 km SW of Scotia, California · 15599 days ago · 25 km deep · 64 km away
  41. 1.518 km E of Redcrest, California · 15597 days ago · 20 km deep · 22 km away
  42. 2.25 km SE of Hayfork, California · 15597 days ago · 21 km deep · 31 km away
  43. 1.735 km SSW of Ferndale, California · 15596 days ago · 21 km deep · 84 km away
  44. 2.440 km SW of Ferndale, California · 15596 days ago · 20 km deep · 95 km away
  45. 3.027 km SW of Ferndale, California · 15595 days ago · 17 km deep · 83 km away
  46. 2.319 km WNW of Indianola, California · 15594 days ago · 23 km deep · 85 km away
  47. 1.97 km WNW of Central Valley (historical), California · 15592 days ago · 26 km deep · 91 km away
  48. 1.66 km WNW of Mad River, California · 15592 days ago · 9 km deep · 8 km away
  49. 2.527 km SW of Ferndale, California · 15591 days ago · 18 km deep · 83 km away
  50. 2.727 km SW of Scotia, California · 15591 days ago · 7 km deep · 72 km away
  51. 3.025 km SW of Scotia, California · 15590 days ago · 10 km deep · 70 km away
  52. 1.94 km NNE of Mad River, California · 15588 days ago · 4 km deep · 1 km away
  53. 1.628 km SW of Scotia, California · 15587 days ago · 20 km deep · 74 km away
  54. 3.029 km NNE of Willow Creek, California · 15586 days ago · 40 km deep · 77 km away
  55. 1.614 km WSW of Leggett, California · 15586 days ago · 4 km deep · 81 km away
  56. 1.617 km SW of Ferndale, California · 15585 days ago · 8 km deep · 76 km away
  57. 2.934 km SW of Ferndale, California · 15584 days ago · 21 km deep · 91 km away
  58. 3.89 km WNW of Fields Landing, California · 15583 days ago · 4 km deep · 75 km away
  59. 2.36 km E of Garberville, California · 15582 days ago · 19 km deep · 47 km away
  60. 1.728 km ESE of Covelo, California · 15581 days ago · 8 km deep · 99 km away

The first 60 of 77.

Before

  1. 2.65 km W of Weott, California · 15627 days ago · 28 km deep · 45 km away
  2. 1.611 km N of Covelo, California · 15627 days ago · 7 km deep · 71 km away
  3. 1.511 km N of Laytonville, California · 15629 days ago · 9 km deep · 79 km away
  4. 1.843 km SW of Ferndale, California · 15630 days ago · 17 km deep · 99 km away
  5. 1.827 km W of Paskenta, California · 15630 days ago · 11 km deep · 84 km away
  6. 1.910 km NNE of Laytonville, California · 15630 days ago · 6 km deep · 80 km away
  7. 2.837 km SW of Ferndale, California · 15630 days ago · 21 km deep · 90 km away
  8. 1.95 km NNE of Burnt Ranch, California · 15632 days ago · 17 km deep · 39 km away
  9. 2.69 km N of Covelo, California · 15634 days ago · -1 km deep · 73 km away
  10. 3.217 km ENE of Redcrest, California · 15635 days ago · 23 km deep · 23 km away
  11. 3.440 km W of Coffee Creek, California · 15636 days ago · 40 km deep · 76 km away
  12. 2.017 km N of Shelter Cove, California · 15642 days ago · 19 km deep · 59 km away
  13. 2.85 km N of French Gulch, California · 15644 days ago · 14 km deep · 78 km away
  14. 2.05 km SSW of Laytonville, California · 15644 days ago · 3 km deep · 95 km away
  15. 1.7near the coast of Northern California · 15645 days ago · 3 km deep · 95 km away
  16. 2.24 km SSW of Laytonville, California · 15645 days ago · 5 km deep · 95 km away
  17. 1.834 km SW of Ferndale, California · 15645 days ago · 28 km deep · 92 km away
  18. 2.013 km ENE of Fortuna, California · 15646 days ago · 20 km deep · 47 km away
  19. 3.027 km SW of Scotia, California · 15646 days ago · 10 km deep · 72 km away
  20. 2.939 km SW of Ferndale, California · 15646 days ago · 21 km deep · 93 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1108739. Read Fri, Oct 2, 2026, 2:40 AM UTC.