California earthquakes

M1.9 earthquake 19 km NNE of Mesa, California

A magnitude 1.9 earthquake struck 19 km NNE of Mesa, California on Sun, Jul 20, 1986, 11:30 AM PDT (18:30 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M6.4 The 1986 Chalfant Valley, California Earthquake. This one was a foreshock.

Dixon Lane-Meadow Creek 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), micro
Local time
UTC
1986-07-20 18:30:50 UTC
Depth
5.3 km (3.3 mi), shallow
Epicenter
37.574° N, 118.430° 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 0.6 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.26
Depth from
From location
Station coverage gap
220°, poorly surrounded by stations
Stations used
25

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: at least 202 in the 60 days after this one and at least 200 in the 30 days before it.

After

  1. 2.316 km NNE of Mesa, California · 14681 days ago · 7 km deep · 4 km away
  2. 2.015 km NNE of Mesa, California · 14681 days ago · 6 km deep · 4 km away
  3. 2.117 km ENE of Swall Meadows, California · 14681 days ago · 7 km deep · 3 km away
  4. 3.814 km NNE of Mesa, California · 14681 days ago · 4 km deep · 5 km away
  5. 4.715 km NE of Mesa, California · 14681 days ago · 7 km deep · 4 km away
  6. 3.820 km NNE of Mesa, California · 14681 days ago · 6 km deep · 1 km away
  7. 1.814 km NNE of Mesa, California · 14681 days ago · 5 km deep · 6 km away
  8. 1.616 km NE of Mesa, California · 14681 days ago · 8 km deep · 4 km away
  9. 1.915 km NE of Mesa, California · 14681 days ago · 8 km deep · 4 km away
  10. 1.816 km NE of Mesa, California · 14681 days ago · 8 km deep · 4 km away
  11. 2.616 km NE of Mesa, California · 14681 days ago · 2 km deep · 4 km away
  12. 2.015 km NE of Mesa, California · 14681 days ago · 7 km deep · 5 km away
  13. 3.315 km NNE of Mesa, California · 14681 days ago · 7 km deep · 5 km away
  14. 2.722km N of Dixon Lane-Meadow Creek, CA · 14681 days ago · 5 km deep · 2 km away
  15. 3.015 km NNE of Mesa, California · 14681 days ago · 6 km deep · 5 km away
  16. 3.415 km NNE of Mesa, California · 14681 days ago · 8 km deep · 4 km away
  17. 2.915 km NNE of Mesa, California · 14681 days ago · 7 km deep · 4 km away
  18. 2.214 km NNE of Mesa, California · 14681 days ago · 2 km deep · 6 km away
  19. 1.620 km N of Dixon Lane-Meadow Creek, California · 14681 days ago · 6 km deep · 2 km away
  20. 3.115 km NNE of Mesa, California · 14681 days ago · 7 km deep · 4 km away
  21. 1.915 km NNE of Mesa, California · 14681 days ago · 7 km deep · 4 km away
  22. 2.416 km NE of Mesa, California · 14681 days ago · 8 km deep · 4 km away
  23. 2.016 km NNE of Mesa, California · 14681 days ago · 4 km deep · 4 km away
  24. 1.616 km N of Dixon Lane-Meadow Creek, California · 14681 days ago · 8 km deep · 5 km away
  25. 2.216 km NE of Mesa, California · 14681 days ago · 8 km deep · 4 km away
  26. 1.615 km NE of Mesa, California · 14681 days ago · 8 km deep · 5 km away
  27. 2.814 km NNE of Mesa, California · 14681 days ago · 7 km deep · 5 km away
  28. 3.215 km NNE of Mesa, California · 14681 days ago · 7 km deep · 5 km away
  29. 1.9California-Nevada border region · 14681 days ago · 5 km deep · 5 km away
  30. 2.516 km NE of Mesa, California · 14681 days ago · 8 km deep · 4 km away
  31. 1.921 km ENE of Swall Meadows, California · 14681 days ago · 7 km deep · 2 km away
  32. 1.921 km ENE of Swall Meadows, California · 14681 days ago · 7 km deep · 2 km away
  33. 1.8California-Nevada border region · 14681 days ago · 7 km deep · 5 km away
  34. 1.715 km NNE of Mesa, California · 14681 days ago · 7 km deep · 5 km away
  35. 2.715 km NNE of Mesa, California · 14681 days ago · 7 km deep · 4 km away
  36. 1.521 km NNE of Mesa, California · 14681 days ago · 6 km deep · 1 km away
  37. 1.815 km NNE of Mesa, California · 14681 days ago · 5 km deep · 4 km away
  38. 2.115 km NNE of Mesa, California · 14681 days ago · 7 km deep · 4 km away
  39. 1.817 km N of Dixon Lane-Meadow Creek, California · 14681 days ago · 7 km deep · 4 km away
  40. 2.716 km NNE of Mesa, California · 14681 days ago · 6 km deep · 4 km away
  41. 2.815 km NNE of Mesa, California · 14681 days ago · 7 km deep · 4 km away
  42. 1.615 km NNE of Mesa, California · 14681 days ago · 6 km deep · 4 km away
  43. 2.114 km ENE of Swall Meadows, California · 14681 days ago · 6 km deep · 6 km away
  44. 1.921 km ENE of Swall Meadows, California · 14681 days ago · 5 km deep · 2 km away
  45. 1.512 km ENE of Swall Meadows, California · 14681 days ago · 4 km deep · 8 km away
  46. 2.120 km ENE of Swall Meadows, California · 14681 days ago · 6 km deep · 1 km away
  47. 2.0California-Nevada border region · 14681 days ago · 5 km deep · 5 km away
  48. 2.515 km NNE of Mesa, California · 14681 days ago · 8 km deep · 5 km away
  49. 2.115 km NNE of Mesa, California · 14681 days ago · 7 km deep · 4 km away
  50. 2.321 km ENE of Swall Meadows, California · 14681 days ago · 7 km deep · 2 km away
  51. 2.215 km NNE of Mesa, California · 14681 days ago · 6 km deep · 5 km away
  52. 1.920 km ENE of Swall Meadows, California · 14681 days ago · 6 km deep · 2 km away
  53. 1.821 km ENE of Swall Meadows, California · 14681 days ago · 6 km deep · 1 km away
  54. 3.220 km NNE of Mesa, California · 14681 days ago · 4 km deep · 1 km away
  55. 1.821 km ENE of Swall Meadows, California · 14681 days ago · 6 km deep · 2 km away
  56. 2.117 km NNE of Mesa, California · 14681 days ago · 4 km deep · 2 km away
  57. 2.516 km NNE of Mesa, California · 14681 days ago · 5 km deep · 4 km away
  58. 1.914 km NNE of Mesa, California · 14681 days ago · 4 km deep · 5 km away
  59. 2.316 km NNE of Mesa, California · 14681 days ago · 7 km deep · 4 km away
  60. 3.315 km NE of Mesa, California · 14681 days ago · 3 km deep · 5 km away

The first 60 of at least 202.

Before

  1. 1.815 km NNE of Mesa, California · 14681 days ago · 7 km deep · 5 km away
  2. 2.222km N of Dixon Lane-Meadow Creek, CA · 14681 days ago · 5 km deep · 2 km away
  3. 2.314 km NNE of Mesa, California · 14681 days ago · 5 km deep · 5 km away
  4. 2.617 km NE of Mesa, California · 14681 days ago · 8 km deep · 3 km away
  5. 2.215 km NNE of Mesa, California · 14681 days ago · 7 km deep · 5 km away
  6. 2.315 km NNE of Mesa, California · 14681 days ago · 5 km deep · 5 km away
  7. 2.216 km NE of Mesa, California · 14681 days ago · 8 km deep · 5 km away
  8. 2.116 km NE of Mesa, California · 14681 days ago · 4 km deep · 4 km away
  9. 1.716 km N of Dixon Lane-Meadow Creek, California · 14681 days ago · 3 km deep · 4 km away
  10. 2.515 km NNE of Mesa, California · 14681 days ago · 5 km deep · 5 km away
  11. 2.014 km NNE of Mesa, California · 14681 days ago · 4 km deep · 5 km away
  12. 1.517 km N of Dixon Lane-Meadow Creek, California · 14681 days ago · 10 km deep · 4 km away
  13. 2.117 km N of Dixon Lane-Meadow Creek, California · 14681 days ago · 10 km deep · 5 km away
  14. 3.115 km NNE of Mesa, California · 14681 days ago · 8 km deep · 4 km away
  15. 2.116 km NNE of Mesa, California · 14681 days ago · 7 km deep · 4 km away
  16. 1.97 km E of Swall Meadows, California · 14681 days ago · 3 km deep · 14 km away
  17. 3.516 km NNE of Mesa, California · 14681 days ago · 7 km deep · 4 km away
  18. 3.015 km NNE of Mesa, California · 14681 days ago · 8 km deep · 5 km away
  19. 1.715 km NNE of Mesa, California · 14681 days ago · 5 km deep · 4 km away
  20. 1.715 km NNE of Mesa, California · 14681 days ago · 4 km deep · 5 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc99415 (also filed as ci134779). Read Tue, Sep 29, 2026, 9:32 PM UTC.