California earthquakes

M2.5 earthquake 27 km SSW of Ferndale, California

A magnitude 2.5 earthquake struck 27 km SSW of Ferndale, California on Sun, Aug 10, 1986, 8:21 AM PDT (15:21 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M3.7 6 km ENE of Garberville, 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
2.5 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1986-08-10 15:21:02 UTC
Depth
4.2 km (2.6 mi), shallow
Epicenter
40.348° N, 124.385° 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, 4.0 km in depth
Magnitude uncertainty
±0.01
Depth from
From location
Station coverage gap
240°, poorly surrounded by stations
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 28 in the 60 days after this one and 22 in the 30 days before it.

After

  1. 3.76 km ENE of Garberville, California · 14659 days ago · 22 km deep · 61 km away
  2. 2.524 km WSW of Ferndale, California · 14649 days ago · 24 km deep · 18 km away
  3. 3.038 km SW of Ferndale, California · 14648 days ago · 19 km deep · 15 km away
  4. 2.01 km SSW of Fieldbrook, California · 14645 days ago · 4 km deep · 73 km away
  5. 3.339 km W of Ferndale, California · 14643 days ago · 21 km deep · 39 km away
  6. 2.125 km SE of Indianola, California · 14641 days ago · 14 km deep · 59 km away
  7. 1.911 km SE of Indianola, California · 14641 days ago · 2 km deep · 56 km away
  8. 2.838 km SW of Ferndale, California · 14641 days ago · 19 km deep · 15 km away
  9. 3.48 km W of Willow Creek, California · 14639 days ago · 19 km deep · 85 km away
  10. 2.290 km WSW of Ferndale, California · 14638 days ago · 5 km deep · 79 km away
  11. 2.64 km S of Mad River, California · 14635 days ago · 21 km deep · 74 km away
  12. 2.10 km SSE of Rio Dell, California · 14635 days ago · 20 km deep · 29 km away
  13. 3.226 km SW of Ferndale, California · 14634 days ago · 26 km deep · 9 km away
  14. 2.717 km WSW of Burnt Ranch, California · 14633 days ago · 4 km deep · 75 km away
  15. 2.43 km NE of Hydesville, California · 14632 days ago · 4 km deep · 37 km away
  16. 3.323 km SW of Scotia, California · 14624 days ago · 15 km deep · 5 km away
  17. 3.0off the coast of Northern California · 14620 days ago · 5 km deep · 66 km away
  18. 2.610 km WSW of Rio Dell, California · 14616 days ago · 26 km deep · 20 km away
  19. 2.510 km W of Rio Dell, California · 14616 days ago · 25 km deep · 20 km away
  20. 2.622 km WSW of Weott, California · 14615 days ago · 9 km deep · 20 km away
  21. 2.722 km WSW of Weott, California · 14615 days ago · 9 km deep · 20 km away
  22. 1.735 km WNW of Cleone, California · 14612 days ago · 4 km deep · 84 km away
  23. 2.640 km SW of Ferndale, California · 14612 days ago · 17 km deep · 18 km away
  24. 1.628 km W of Trinidad, California · 14612 days ago · 4 km deep · 76 km away
  25. 3.039 km SSW of Ferndale, California · 14608 days ago · 31 km deep · 13 km away
  26. 3.148 km SW of Ferndale, California · 14607 days ago · 28 km deep · 24 km away
  27. 2.715 km SW of Scotia, California · 14604 days ago · 23 km deep · 13 km away
  28. 1.914 km NNE of Alderpoint, California · 14603 days ago · 10 km deep · 71 km away

Before

  1. 3.810 km SW of Willow Creek, California · 14664 days ago · 17 km deep · 81 km away
  2. 2.811 km SSW of Willow Creek, California · 14664 days ago · 26 km deep · 82 km away
  3. 1.58 km ENE of Willow Creek, California · 14665 days ago · 4 km deep · 99 km away
  4. 2.97 km NW of Hyampom, California · 14665 days ago · 4 km deep · 83 km away
  5. 2.368 km W of Fort Bragg, California · 14668 days ago · 4 km deep · 99 km away
  6. 4.397 km W of Ferndale, California · 14669 days ago · 5 km deep · 87 km away
  7. 2.511 km WSW of Hyampom, California · 14670 days ago · -1 km deep · 73 km away
  8. 2.410 km WSW of Ruth, California · 14670 days ago · 28 km deep · 82 km away
  9. 4.91 km NW of Blue Lake, California · 14672 days ago · 18 km deep · 69 km away
  10. 3.62 km SSE of Scotia, California · 14672 days ago · 15 km deep · 28 km away
  11. 2.110 km W of Laytonville, California · 14672 days ago · 29 km deep · 98 km away
  12. 3.470 km W of Shelter Cove, California · 14672 days ago · 3 km deep · 60 km away
  13. 3.014 km SW of Mad River, California · 14672 days ago · 32 km deep · 65 km away
  14. 2.814 km WNW of Hyampom, California · 14672 days ago · 4 km deep · 75 km away
  15. 3.436 km SSW of Ferndale, California · 14672 days ago · 21 km deep · 11 km away
  16. 1.923 km SE of Alderpoint, California · 14674 days ago · -1 km deep · 88 km away
  17. 2.793 km WSW of Ferndale, California · 14676 days ago · 0 km deep · 78 km away
  18. 2.516 km WSW of Weott, California · 14677 days ago · 0 km deep · 25 km away
  19. 1.515 km SW of Ferndale, California · 14679 days ago · 4 km deep · 13 km away
  20. 3.237 km SW of Ferndale, California · 14679 days ago · 20 km deep · 12 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc78849. Read Thu, Oct 1, 2026, 11:25 PM UTC.