California earthquakes

M2.5 earthquake 13 km WNW of Mad River, California

A magnitude 2.5 earthquake struck 13 km WNW of Mad River, California on Fri, Jan 30, 1987, 6:34 PM PST (02:34 UTC), -1 km (-1 mi) below the surface.

A larger quake followed: M3.8 9 km W 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
2.5 (md), micro
Local time
UTC
1987-01-31 02:34:01 UTC
Depth
-1.1 km (-0.7 mi), shallow
Epicenter
40.500° N, 123.660° 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 1.3 km horizontally, 6.1 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
59°
Stations used
20

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 32 in the 60 days after this one and 19 in the 30 days before it.

After

  1. 1.724 km SW of Scotia, California · 14478 days ago · 4 km deep · 60 km away
  2. 3.89 km W of Ferndale, California · 14478 days ago · 28 km deep · 61 km away
  3. 2.445 km W of Ferndale, California · 14472 days ago · 24 km deep · 97 km away
  4. 2.540 km W of Indianola, California · 14471 days ago · 19 km deep · 92 km away
  5. 1.616 km WSW of Leggett, California · 14471 days ago · -1 km deep · 80 km away
  6. 1.911 km ENE of Hydesville, California · 14471 days ago · 22 km deep · 27 km away
  7. 1.8near the coast of Northern California · 14471 days ago · 21 km deep · 65 km away
  8. 2.026 km W of Paskenta, California · 14470 days ago · -1 km deep · 94 km away
  9. 2.641 km SW of Ferndale, California · 14468 days ago · 28 km deep · 83 km away
  10. 2.729 km WSW of Ferndale, California · 14468 days ago · 23 km deep · 78 km away
  11. 2.410 km W of Scotia, California · 14467 days ago · 4 km deep · 48 km away
  12. 3.112 km NE of Burnt Ranch, California · 14453 days ago · 16 km deep · 50 km away
  13. 2.118 km ENE of Westhaven-Moonstone, California · 14452 days ago · 11 km deep · 72 km away
  14. 2.037 km W of Ferndale, California · 14452 days ago · 12 km deep · 89 km away
  15. 3.137 km SW of Ferndale, California · 14450 days ago · 20 km deep · 76 km away
  16. 3.125 km WNW of Ferndale, California · 14447 days ago · 16 km deep · 77 km away
  17. 2.043 km WSW of Ferndale, California · 14446 days ago · 3 km deep · 93 km away
  18. 2.326 km SW of Ferndale, California · 14444 days ago · 14 km deep · 68 km away
  19. 2.810 km WNW of Manila, California · 14444 days ago · 28 km deep · 68 km away
  20. 1.81 km NE of Redway, California · 14443 days ago · 22 km deep · 43 km away
  21. 2.4Northern California · 14442 days ago · 30 km deep · 18 km away
  22. 2.89 km ENE of Benbow, California · 14441 days ago · 21 km deep · 45 km away
  23. 2.38 km SSW of Alderpoint, California · 14440 days ago · 23 km deep · 44 km away
  24. 2.310 km SSW of Alderpoint, California · 14440 days ago · 18 km deep · 46 km away
  25. 3.219 km N of Weaverville, California · 14428 days ago · 21 km deep · 77 km away
  26. 2.133 km SE of Ruth, California · 14423 days ago · -1 km deep · 72 km away
  27. 1.727 km SW of Scotia, California · 14422 days ago · 4 km deep · 60 km away
  28. 1.813 km ESE of Blue Lake, California · 14421 days ago · 5 km deep · 39 km away
  29. 3.633 km WSW of Ferndale, California · 14420 days ago · 23 km deep · 80 km away
  30. 2.136 km WSW of Ferndale, California · 14420 days ago · 25 km deep · 84 km away
  31. 2.236 km WSW of Ferndale, California · 14420 days ago · 23 km deep · 83 km away
  32. 2.626 km SE of Ruth, California · 14420 days ago · 42 km deep · 65 km away

Before

  1. 1.99 km ESE of Leggett, California · 14482 days ago · 6 km deep · 74 km away
  2. 2.217 km WSW of Ferndale, California · 14486 days ago · 21 km deep · 67 km away
  3. 2.318 km ESE of Indianola, California · 14488 days ago · 24 km deep · 32 km away
  4. 1.521 km NNW of Covelo, California · 14490 days ago · 0 km deep · 65 km away
  5. 1.937 km SSW of Ferndale, California · 14490 days ago · 22 km deep · 75 km away
  6. 1.82 km SE of Myers Flat, California · 14491 days ago · 4 km deep · 32 km away
  7. 2.434 km SSW of Ferndale, California · 14491 days ago · 20 km deep · 71 km away
  8. 2.614 km WSW of Scotia, California · 14493 days ago · 27 km deep · 50 km away
  9. 2.614 km SE of Blue Lake, California · 14493 days ago · 27 km deep · 37 km away
  10. 2.719 km NNW of Covelo, California · 14493 days ago · 2 km deep · 66 km away
  11. 2.48 km S of Scotia, California · 14494 days ago · 4 km deep · 39 km away
  12. 3.6near the coast of Northern California · 14494 days ago · 3 km deep · 52 km away
  13. 2.6near the coast of Northern California · 14495 days ago · 23 km deep · 78 km away
  14. 2.52 km WSW of Leggett, California · 14497 days ago · 4 km deep · 72 km away
  15. 1.68 km SE of Covelo, California · 14497 days ago · 4 km deep · 93 km away
  16. 1.518 km W of Trinity Center, California · 14501 days ago · 4 km deep · 80 km away
  17. 1.65 km E of Covelo, California · 14504 days ago · 4 km deep · 88 km away
  18. 2.16 km NNE of Covelo, California · 14505 days ago · 11 km deep · 81 km away
  19. 2.72 km ESE of French Gulch, California · 14506 days ago · 23 km deep · 91 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc93648. Read Tue, Sep 22, 2026, 9:02 PM UTC.