California earthquakes

M1.6 earthquake 4 km NW of Round Valley, California

A magnitude 1.6 earthquake struck 4 km NW of Round Valley, California on Thu, Apr 18, 1985, 7:03 AM PST (15:03 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M1.9 5 km SSE of Swall Meadows, 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
1.6 (md), micro
Local time
UTC
1985-04-18 15:03:27 UTC
Depth
4.8 km (3.0 mi), shallow
Epicenter
37.448° N, 118.632° 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, 0.5 km in depth
Magnitude uncertainty
±0.22
Depth from
From location
Station coverage gap
77°
Stations used
33

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 1.95 km SSE of Swall Meadows, California · 15117 days ago · 10 km deep · 3 km away
  2. 2.94 km WNW of Round Valley, California · 15117 days ago · 4 km deep · 2 km away
  3. 2.34 km WNW of Round Valley, California · 15117 days ago · 4 km deep · 2 km away
  4. 2.54 km SE of Swall Meadows, California · 15117 days ago · 10 km deep · 4 km away
  5. 2.34 km SE of Swall Meadows, California · 15117 days ago · 10 km deep · 4 km away
  6. 2.25 km SSE of Swall Meadows, California · 15117 days ago · 10 km deep · 3 km away
  7. 2.64 km SE of Swall Meadows, California · 15117 days ago · 11 km deep · 3 km away
  8. 1.94 km SE of Swall Meadows, California · 15117 days ago · 11 km deep · 3 km away
  9. 2.65 km SSE of Swall Meadows, California · 15117 days ago · 11 km deep · 3 km away
  10. 2.25 km SSE of Swall Meadows, California · 15117 days ago · 11 km deep · 3 km away
  11. 1.74 km SE of Swall Meadows, California · 15117 days ago · 11 km deep · 3 km away
  12. 1.94 km SE of Swall Meadows, California · 15117 days ago · 10 km deep · 3 km away
  13. 1.54 km SE of Swall Meadows, California · 15117 days ago · 11 km deep · 4 km away
  14. 1.74 km SE of Swall Meadows, California · 15117 days ago · 9 km deep · 4 km away
  15. 1.74 km SE of Swall Meadows, California · 15117 days ago · 11 km deep · 3 km away
  16. 3.34 km SE of Swall Meadows, California · 15117 days ago · 10 km deep · 3 km away
  17. 1.95 km WSW of Aspen Springs, California · 15116 days ago · 2 km deep · 15 km away
  18. 2.95 km WSW of Aspen Springs, California · 15116 days ago · 2 km deep · 15 km away
  19. 1.85 km SE of Swall Meadows, California · 15116 days ago · 11 km deep · 3 km away
  20. 1.74 km SE of Swall Meadows, California · 15116 days ago · 11 km deep · 3 km away
  21. 1.84 km SE of Swall Meadows, California · 15116 days ago · 11 km deep · 3 km away
  22. 3.14 km SSE of Swall Meadows, California · 15116 days ago · 10 km deep · 3 km away
  23. 1.94 km WNW of Round Valley, California · 15116 days ago · 4 km deep · 2 km away
  24. 2.05 km SSE of Swall Meadows, California · 15116 days ago · 10 km deep · 3 km away
  25. 1.74 km SE of Swall Meadows, California · 15116 days ago · 10 km deep · 3 km away
  26. 1.55 km SE of Swall Meadows, California · 15116 days ago · 10 km deep · 3 km away
  27. 1.64 km N of Round Valley, California · 15116 days ago · 8 km deep · 4 km away
  28. 2.65 km SE of Swall Meadows, California · 15116 days ago · 10 km deep · 3 km away
  29. 2.113 km SW of Aspen Springs, California · 15116 days ago · 10 km deep · 16 km away
  30. 1.71 km SE of Swall Meadows, California · 15116 days ago · 2 km deep · 6 km away
  31. 2.23 km WNW of Round Valley, California · 15116 days ago · 4 km deep · 2 km away
  32. 1.64 km SE of Swall Meadows, California · 15116 days ago · 9 km deep · 3 km away
  33. 3.45 km SE of Swall Meadows, California · 15116 days ago · 11 km deep · 3 km away
  34. 1.729 km ENE of Mono City, California · 15116 days ago · 3 km deep · 80 km away
  35. 2.64 km N of Round Valley, California · 15115 days ago · 10 km deep · 5 km away
  36. 2.04 km SE of Swall Meadows, California · 15115 days ago · 11 km deep · 3 km away
  37. 1.611 km W of Aspen Springs, California · 15115 days ago · 8 km deep · 23 km away
  38. 1.914 km WSW of Aspen Springs, California · 15115 days ago · 5 km deep · 21 km away
  39. 1.6California-Nevada border region · 15115 days ago · 4 km deep · 1 km away
  40. 1.64 km SE of Swall Meadows, California · 15114 days ago · 9 km deep · 3 km away
  41. 2.020 km ESE of Yosemite Valley, California · 15113 days ago · 4 km deep · 70 km away
  42. 2.54 km SE of Swall Meadows, California · 15113 days ago · 12 km deep · 3 km away
  43. 3.34 km SE of Swall Meadows, California · 15113 days ago · 11 km deep · 3 km away
  44. 1.94 km SE of Swall Meadows, California · 15113 days ago · 11 km deep · 3 km away
  45. 2.015 km WSW of Aspen Springs, California · 15113 days ago · 5 km deep · 21 km away
  46. 1.67 km E of Swall Meadows, California · 15112 days ago · 8 km deep · 9 km away
  47. 1.74 km WNW of Round Valley, California · 15112 days ago · 4 km deep · 2 km away
  48. 1.614 km WSW of Aspen Springs, California · 15111 days ago · 4 km deep · 22 km away
  49. 1.611 km SE of Mammoth Lakes, California · 15111 days ago · 6 km deep · 26 km away
  50. 2.11 km SE of Swall Meadows, California · 15110 days ago · 4 km deep · 5 km away
  51. 1.62 km WNW of Round Valley, California · 15110 days ago · 11 km deep · 3 km away
  52. 2.325 km E of Mono City, California · 15110 days ago · 7 km deep · 74 km away
  53. 1.55 km SE of Swall Meadows, California · 15110 days ago · 9 km deep · 4 km away
  54. 3.35 km NNE of Round Valley, California · 15110 days ago · 8 km deep · 6 km away
  55. 2.04 km SE of Swall Meadows, California · 15109 days ago · 9 km deep · 4 km away
  56. 2.74 km SE of Swall Meadows, California · 15109 days ago · 10 km deep · 4 km away
  57. 2.14 km SE of Swall Meadows, California · 15109 days ago · 9 km deep · 3 km away
  58. 1.72 km W of Round Valley, California · 15109 days ago · 10 km deep · 3 km away
  59. 2.22 km NW of Round Valley, California · 15109 days ago · 6 km deep · 3 km away
  60. 2.331 km NW of Benton, California · 15108 days ago · 1 km deep · 65 km away

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc46325. Read Tue, Sep 22, 2026, 8:54 PM UTC.