California earthquakes

M1.9 earthquake 12 km NNW of Hayfork, California

A magnitude 1.9 earthquake struck 12 km NNW of Hayfork, California on Tue, Oct 30, 1979, 8:42 AM PST (16:42 UTC), 29 km (18 mi) below the surface.

A larger quake followed: M3.4 25 km SW of Scotia, California. This one was a foreshock.

Hayfork 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
1.9 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1979-10-30 16:42:41 UTC
Depth
29.2 km (18.2 mi), shallow
Epicenter
40.658° N, 123.243° 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 3.6 km horizontally, 6.8 km in depth
Depth from
From location
Station coverage gap
310°, poorly surrounded by stations
Stations used
4

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 47 in the 60 days after this one and 21 in the 30 days before it.

After

  1. 1.93 km NNE of Hydesville, California · 17140 days ago · 18 km deep · 71 km away
  2. 1.622 km ENE of Hydesville, California · 17139 days ago · 22 km deep · 51 km away
  3. 3.07 km WSW of Mad River, California · 17138 days ago · 30 km deep · 40 km away
  4. 1.89 km WSW of Mad River, California · 17138 days ago · 27 km deep · 41 km away
  5. 1.611 km SW of Ferndale, California · 17136 days ago · 24 km deep · 97 km away
  6. 1.87 km SSE of Scotia, California · 17136 days ago · 22 km deep · 76 km away
  7. 1.915 km WSW of Trinidad, California · 17131 days ago · 20 km deep · 99 km away
  8. 1.98 km SE of Blue Lake, California · 17131 days ago · -1 km deep · 59 km away
  9. 1.77 km W of Willow Creek, California · 17130 days ago · 23 km deep · 50 km away
  10. 2.37 km E of Mad River, California · 17129 days ago · 29 km deep · 26 km away
  11. 2.513 km NNE of Redcrest, California · 17128 days ago · 24 km deep · 56 km away
  12. 2.218 km SW of Scotia, California · 17128 days ago · 32 km deep · 92 km away
  13. 1.69 km W of Mad River, California · 17125 days ago · 2 km deep · 40 km away
  14. 2.46 km SSW of Scotia, California · 17125 days ago · 21 km deep · 80 km away
  15. 1.512 km SE of Blue Lake, California · 17125 days ago · 21 km deep · 55 km away
  16. 1.68 km SSW of Junction City, California · 17122 days ago · 3 km deep · 13 km away
  17. 1.79 km SE of Blue Lake, California · 17121 days ago · 1 km deep · 59 km away
  18. 3.425 km SW of Scotia, California · 17120 days ago · 18 km deep · 99 km away
  19. 1.61 km SE of Westhaven-Moonstone, California · 17119 days ago · 16 km deep · 82 km away
  20. 1.64 km ENE of Westhaven-Moonstone, California · 17119 days ago · 19 km deep · 82 km away
  21. 1.71 km SW of Loleta, California · 17119 days ago · 17 km deep · 84 km away
  22. 2.65 km WNW of Junction City, California · 17118 days ago · 12 km deep · 14 km away
  23. 1.99 km ESE of Alderpoint, California · 17114 days ago · 14 km deep · 63 km away
  24. 2.87 km W of Rio Dell, California · 17113 days ago · 20 km deep · 82 km away
  25. 1.920 km NE of Hydesville, California · 17113 days ago · 25 km deep · 56 km away
  26. 1.616 km SW of Scotia, California · 17111 days ago · 29 km deep · 88 km away
  27. 2.216 km SE of Alderpoint, California · 17110 days ago · 20 km deep · 68 km away
  28. 2.713 km NNW of Laytonville, California · 17108 days ago · 6 km deep · 99 km away
  29. 1.58 km WNW of Fields Landing, California · 17104 days ago · 24 km deep · 90 km away
  30. 1.625 km S of Ruth, California · 17104 days ago · 7 km deep · 69 km away
  31. 1.62 km W of Bayview, California · 17102 days ago · 11 km deep · 83 km away
  32. 1.80 km WNW of Humboldt Hill, California · 17102 days ago · 10 km deep · 80 km away
  33. 1.811 km NW of Mad River, California · 17100 days ago · 23 km deep · 32 km away
  34. 1.62 km N of Ferndale, California · 17097 days ago · 20 km deep · 87 km away
  35. 3.14 km N of Myers Flat, California · 17096 days ago · 28 km deep · 66 km away
  36. 1.613 km SW of Scotia, California · 17096 days ago · 26 km deep · 86 km away
  37. 2.919 km SW of Scotia, California · 17095 days ago · 22 km deep · 91 km away
  38. 1.518 km SW of Scotia, California · 17095 days ago · 22 km deep · 90 km away
  39. 1.910 km W of Ferndale, California · 17095 days ago · 21 km deep · 97 km away
  40. 2.18 km NW of Fields Landing, California · 17095 days ago · 26 km deep · 89 km away
  41. 2.07 km NNE of Mad River, California · 17093 days ago · -1 km deep · 25 km away
  42. 2.321 km WSW of Weott, California · 17091 days ago · 4 km deep · 90 km away
  43. 2.222 km NNE of Redcrest, California · 17088 days ago · 22 km deep · 49 km away
  44. 1.619 km SSW of Ferndale, California · 17088 days ago · 28 km deep · 95 km away
  45. 2.01 km SSW of Humboldt Hill, California · 17086 days ago · 10 km deep · 80 km away
  46. 2.117 km ENE of Hydesville, California · 17084 days ago · 23 km deep · 56 km away
  47. 1.87 km W of Rio Dell, California · 17084 days ago · 22 km deep · 83 km away

Before

  1. 1.811 km N of Alderpoint, California · 17142 days ago · 26 km deep · 51 km away
  2. 1.76 km SSE of Ferndale, California · 17143 days ago · 9 km deep · 85 km away
  3. 1.612 km E of Hydesville, California · 17147 days ago · 3 km deep · 61 km away
  4. 2.36 km SW of Scotia, California · 17148 days ago · 22 km deep · 81 km away
  5. 1.918 km W of Samoa, California · 17148 days ago · 24 km deep · 100 km away
  6. 1.925 km SSW of Ferndale, California · 17150 days ago · 16 km deep · 100 km away
  7. 1.812 km WSW of Redcrest, California · 17152 days ago · 29 km deep · 79 km away
  8. 1.620 km NW of Willow Creek, California · 17153 days ago · 24 km deep · 65 km away
  9. 3.05 km N of Fortuna, California · 17154 days ago · 23 km deep · 76 km away
  10. 2.116 km ESE of Pine Hills, California · 17155 days ago · 22 km deep · 61 km away
  11. 1.815 km SW of Mad River, California · 17155 days ago · 20 km deep · 47 km away
  12. 1.73 km SE of Willow Creek, California · 17155 days ago · 28 km deep · 42 km away
  13. 1.5Northern California · 17156 days ago · 1 km deep · 78 km away
  14. 1.627 km SE of Blue Lake, California · 17156 days ago · 22 km deep · 46 km away
  15. 1.7near the coast of Northern California · 17157 days ago · 20 km deep · 75 km away
  16. 3.04 km NE of Trinidad, California · 17157 days ago · 19 km deep · 88 km away
  17. 2.72 km NE of Rio Dell, California · 17161 days ago · 25 km deep · 73 km away
  18. 1.94 km S of Willow Creek, California · 17164 days ago · 22 km deep · 42 km away
  19. 2.2near the coast of Northern California · 17164 days ago · 5 km deep · 87 km away
  20. 2.410 km NNW of Alderpoint, California · 17170 days ago · 30 km deep · 58 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1048560. Read Mon, Oct 5, 2026, 7:29 AM UTC.