California earthquakes

M2.1 earthquake 2 km SW of Walker, California

A magnitude 2.1 earthquake struck 2 km SW of Walker, California on Mon, Apr 20, 1987, 3:14 AM PDT (10:14 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.6 7 km SSW of Markleeville, California. This one was a foreshock.

Walker 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
2.1 (md), micro
Local time
UTC
1987-04-20 10:14:21 UTC
Depth
4.6 km (2.8 mi), shallow
Epicenter
38.499° N, 119.500° 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 0.2 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.21
Depth from
From location
Station coverage gap
92°
Stations used
21

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. 2.67 km SSW of Markleeville, California · 14400 days ago · -1 km deep · 30 km away
  2. 1.87 km SSW of Markleeville, California · 14400 days ago · 4 km deep · 30 km away
  3. 1.65 km S of Markleeville, California · 14400 days ago · 1 km deep · 29 km away
  4. 1.916 km E of Mono City, California · 14394 days ago · 9 km deep · 69 km away
  5. 2.911 km E of Kirkwood, California · 14394 days ago · -2 km deep · 44 km away
  6. 1.812 km E of Kirkwood, California · 14394 days ago · 1 km deep · 45 km away
  7. 2.416 km E of Mono City, California · 14385 days ago · 9 km deep · 68 km away
  8. 1.6California-Nevada border region · 14383 days ago · 3 km deep · 64 km away
  9. 1.510 km SE of Walker, California · 14382 days ago · 5 km deep · 11 km away
  10. 3.425 km S of Hawthorne, Nevada · 14378 days ago · 6 km deep · 76 km away
  11. 1.819 km SE of Yosemite Valley, California · 14375 days ago · 10 km deep · 97 km away
  12. 2.123 km ESE of Yosemite Valley, California · 14375 days ago · 11 km deep · 97 km away
  13. 1.731 km ENE of Lee Vining, California · 14374 days ago · 6 km deep · 80 km away
  14. 1.825 km ESE of Yosemite Valley, California · 14373 days ago · 15 km deep · 96 km away
  15. 1.723 km ESE of Yosemite Valley, California · 14373 days ago · 14 km deep · 97 km away
  16. 1.525 km ESE of Yosemite Valley, California · 14373 days ago · 6 km deep · 97 km away
  17. 2.023 km ESE of Yosemite Valley, California · 14373 days ago · 13 km deep · 97 km away
  18. 1.619 km SE of Yosemite Valley, California · 14373 days ago · 15 km deep · 98 km away
  19. 1.626 km WNW of Benton, California · 14369 days ago · 7 km deep · 92 km away
  20. 2.35 km WNW of Topaz, California · 14366 days ago · 3 km deep · 17 km away
  21. 1.522 km SE of Yosemite Valley, California · 14362 days ago · 12 km deep · 98 km away
  22. 1.919 km ESE of Yosemite Valley, California · 14348 days ago · 2 km deep · 94 km away
  23. 2.119 km ESE of Yosemite Valley, California · 14348 days ago · 20 km deep · 90 km away
  24. 2.119 km ESE of Yosemite Valley, California · 14347 days ago · 15 km deep · 90 km away
  25. 1.629 km E of Mono City, California · 14342 days ago · 8 km deep · 78 km away
  26. 2.536 km NW of Benton, California · 14342 days ago · 1 km deep · 82 km away
  27. 1.835 km NW of Benton, California · 14342 days ago · 0 km deep · 83 km away
  28. 1.810 km ESE of Bridgeport, California · 14341 days ago · 3 km deep · 45 km away

Before

  1. 3.10 km NW of Mesa Vista, California · 14402 days ago · -1 km deep · 44 km away
  2. 2.410 km SSE of Walker, California · 14407 days ago · 3 km deep · 10 km away
  3. 2.49 km E of Markleeville, California · 14409 days ago · 2 km deep · 25 km away
  4. 1.830 km E of Lee Vining, California · 14410 days ago · 5 km deep · 86 km away
  5. 2.512 km WNW of Bridgeport, California · 14411 days ago · 7 km deep · 24 km away
  6. 2.29 km SSE of Walker, California · 14411 days ago · 1 km deep · 9 km away
  7. 2.032 km E of Mono City, California · 14412 days ago · 4 km deep · 78 km away
  8. 1.626 km ENE of Lee Vining, California · 14413 days ago · 9 km deep · 76 km away
  9. 2.511 km NNW of Bridgeport, California · 14415 days ago · 6 km deep · 25 km away
  10. 2.310 km E of Markleeville, California · 14415 days ago · -1 km deep · 26 km away
  11. 1.633 km ENE of Lee Vining, California · 14417 days ago · 0 km deep · 82 km away
  12. 2.019 km NW of Benton, California · 14418 days ago · 3 km deep · 98 km away
  13. 2.430 km ENE of Lee Vining, California · 14419 days ago · 1 km deep · 81 km away
  14. 2.130 km ENE of Lee Vining, California · 14420 days ago · 1 km deep · 81 km away
  15. 2.031 km ENE of Lee Vining, California · 14420 days ago · 2 km deep · 81 km away
  16. 1.831 km ENE of Lee Vining, California · 14421 days ago · 2 km deep · 81 km away
  17. 1.97 km ESE of Mono City, California · 14421 days ago · 10 km deep · 65 km away
  18. 2.015 km SE of Yosemite Valley, California · 14422 days ago · 3 km deep · 94 km away
  19. 1.731 km NW of Benton, California · 14423 days ago · 1 km deep · 85 km away
  20. 1.820 km ENE of Mono City, California · 14423 days ago · 6 km deep · 65 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc98941. Read Wed, Sep 23, 2026, 2:37 AM UTC.