California earthquakes

M1.8 earthquake 0 km NW of Round Valley, California

A magnitude 1.8 earthquake struck 0 km NW of Round Valley, California on Fri, Apr 12, 1985, 12:56 AM PST (08:56 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.7 4 km SE 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
1.8 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1985-04-12 08:56:18 UTC
Depth
4.6 km (2.9 mi), shallow
Epicenter
37.425° N, 118.592° 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, 0.6 km in depth
Magnitude uncertainty
±0.16
Depth from
From location
Station coverage gap
115°
Stations used
28

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 199 in the 60 days after this one and 178 in the 30 days before it.

After

  1. 1.926 km ENE of Mono City, California · 15147 days ago · 6 km deep · 77 km away
  2. 2.45 km NNW of Round Valley, California · 15147 days ago · 6 km deep · 4 km away
  3. 1.830 km NW of Benton, California · 15146 days ago · 2 km deep · 66 km away
  4. 1.92 km WNW of Round Valley, California · 15146 days ago · 5 km deep · 2 km away
  5. 3.25 km N of Round Valley, California · 15146 days ago · 9 km deep · 5 km away
  6. 2.26 km SSW of Swall Meadows, California · 15146 days ago · 4 km deep · 7 km away
  7. 1.74 km NW of Round Valley, California · 15145 days ago · 5 km deep · 3 km away
  8. 2.35 km NNW of Round Valley, California · 15145 days ago · 7 km deep · 5 km away
  9. 1.710 km ESE of Mammoth Lakes, California · 15144 days ago · 2 km deep · 32 km away
  10. 1.718 km NE of Mesa, California · 15144 days ago · 8 km deep · 21 km away
  11. 1.719 km ENE of Sunny Slopes, California · 15144 days ago · 7 km deep · 26 km away
  12. 1.932 km ENE of Lee Vining, California · 15144 days ago · 8 km deep · 72 km away
  13. 1.7California-Nevada border region · 15144 days ago · 5 km deep · 5 km away
  14. 2.04 km NW of Round Valley, California · 15143 days ago · 5 km deep · 4 km away
  15. 1.65 km NW of Round Valley, California · 15143 days ago · 5 km deep · 4 km away
  16. 1.76 km SSW of Swall Meadows, California · 15143 days ago · 11 km deep · 8 km away
  17. 2.46 km WSW of Aspen Springs, California · 15143 days ago · 3 km deep · 20 km away
  18. 1.53 km SSE of Swall Meadows, California · 15143 days ago · 8 km deep · 7 km away
  19. 1.611 km ESE of Mammoth Lakes, California · 15142 days ago · 6 km deep · 32 km away
  20. 1.511 km E of Mammoth Lakes, California · 15142 days ago · 5 km deep · 33 km away
  21. 1.76 km WSW of Aspen Springs, CA · 15142 days ago · 3 km deep · 20 km away
  22. 1.64 km N of Round Valley, California · 15142 days ago · 10 km deep · 4 km away
  23. 2.43 km NE of Round Valley, California · 15142 days ago · 11 km deep · 3 km away
  24. 1.622 km E of Bishop, California · 15142 days ago · 11 km deep · 41 km away
  25. 2.45 km SSE of Swall Meadows, California · 15142 days ago · 6 km deep · 5 km away
  26. 1.74 km SSE of Swall Meadows, California · 15142 days ago · 5 km deep · 5 km away
  27. 1.64 km NW of Round Valley, California · 15141 days ago · 5 km deep · 4 km away
  28. 2.35 km SW of Aspen Springs, California · 15140 days ago · 5 km deep · 18 km away
  29. 1.85 km SW of Aspen Springs, California · 15140 days ago · 5 km deep · 18 km away
  30. 1.87 km E of Swall Meadows, California · 15140 days ago · 5 km deep · 11 km away
  31. 1.69 km WSW of Aspen Springs, California · 15140 days ago · 11 km deep · 22 km away
  32. 2.610 km W of Aspen Springs, California · 15139 days ago · 3 km deep · 26 km away
  33. 3.02 km WNW of Round Valley, California · 15139 days ago · 6 km deep · 2 km away
  34. 2.111 km W of Aspen Springs, California · 15139 days ago · 7 km deep · 27 km away
  35. 2.12 km NNW of Mesa, California · 15138 days ago · 3 km deep · 4 km away
  36. 1.53 km SSE of Swall Meadows, California · 15138 days ago · 9 km deep · 6 km away
  37. 1.74 km SW of Aspen Springs, California · 15138 days ago · 3 km deep · 18 km away
  38. 1.64 km NNW of Round Valley, California · 15137 days ago · 7 km deep · 4 km away
  39. 2.23 km NNE of Round Valley, California · 15137 days ago · 10 km deep · 3 km away
  40. 2.911 km E of Mammoth Lakes, California · 15137 days ago · 5 km deep · 33 km away
  41. 1.91 km NE of Round Valley, California · 15137 days ago · 10 km deep · 2 km away
  42. 2.14 km NW of Round Valley, California · 15137 days ago · 6 km deep · 4 km away
  43. 1.64 km SSW of Aspen Springs, California · 15137 days ago · 4 km deep · 16 km away
  44. 2.37 km NW of Aspen Springs, California · 15136 days ago · -2 km deep · 25 km away
  45. 2.36 km NW of Aspen Springs, California · 15136 days ago · 0 km deep · 24 km away
  46. 1.54 km N of Round Valley, California · 15136 days ago · 7 km deep · 4 km away
  47. 1.55 km NW of Round Valley, California · 15136 days ago · 7 km deep · 4 km away
  48. 2.011 km E of Mammoth Lakes, California · 15136 days ago · 5 km deep · 33 km away
  49. 1.73 km NNW of Mesa, California · 15135 days ago · 10 km deep · 4 km away
  50. 1.82 km W of Swall Meadows, California · 15134 days ago · 10 km deep · 12 km away
  51. 1.64 km WNW of Round Valley, California · 15134 days ago · 4 km deep · 3 km away
  52. 4.14 km WNW of Round Valley, California · 15134 days ago · 4 km deep · 4 km away
  53. 1.54 km WNW of Round Valley, California · 15134 days ago · 4 km deep · 4 km away
  54. 2.64 km WNW of Round Valley, California · 15134 days ago · 3 km deep · 4 km away
  55. 2.14 km WNW of Round Valley, California · 15134 days ago · 4 km deep · 4 km away
  56. 2.14 km WNW of Round Valley, California · 15134 days ago · 4 km deep · 4 km away
  57. 2.94 km WNW of Round Valley, California · 15134 days ago · 4 km deep · 4 km away
  58. 1.84 km WNW of Round Valley, California · 15134 days ago · 4 km deep · 4 km away
  59. 2.44 km WNW of Round Valley, California · 15133 days ago · 4 km deep · 4 km away
  60. 1.74 km WNW of Round Valley, California · 15133 days ago · 4 km deep · 4 km away

The first 60 of at least 199.

Before

  1. 1.711 km SSW of Aspen Springs, California · 15147 days ago · 8 km deep · 17 km away
  2. 1.931 km NW of Benton, California · 15148 days ago · 0 km deep · 68 km away
  3. 2.031 km NW of Benton, California · 15148 days ago · 1 km deep · 68 km away
  4. 1.54 km NW of Round Valley, California · 15148 days ago · 5 km deep · 4 km away
  5. 2.013 km WNW of Big Creek, California · 15148 days ago · 3 km deep · 73 km away
  6. 1.76 km WSW of Aspen Springs, California · 15149 days ago · 3 km deep · 19 km away
  7. 1.74 km WNW of Aspen Springs, California · 15149 days ago · 4 km deep · 22 km away
  8. 2.25 km S of Swall Meadows, California · 15150 days ago · 3 km deep · 6 km away
  9. 2.85 km S of Swall Meadows, California · 15150 days ago · 4 km deep · 6 km away
  10. 2.44 km N of Round Valley, California · 15150 days ago · 10 km deep · 4 km away
  11. 1.73 km ESE of Mammoth Lakes, California · 15150 days ago · 6 km deep · 38 km away
  12. 1.812 km SE of Mammoth Lakes, California · 15150 days ago · 6 km deep · 29 km away
  13. 1.65 km SSW of Swall Meadows, California · 15150 days ago · 6 km deep · 7 km away
  14. 1.66 km WNW of Round Valley, California · 15150 days ago · 8 km deep · 5 km away
  15. 2.14 km SSW of Swall Meadows, California · 15150 days ago · 6 km deep · 7 km away
  16. 1.64 km NW of Round Valley, California · 15151 days ago · 5 km deep · 4 km away
  17. 2.65 km SSE of Swall Meadows, California · 15151 days ago · 6 km deep · 5 km away
  18. 1.710 km W of Aspen Springs, California · 15151 days ago · 8 km deep · 26 km away
  19. 1.65 km SW of Aspen Springs, California · 15152 days ago · 3 km deep · 18 km away
  20. 1.73 km WSW of Round Valley, California · 15152 days ago · 11 km deep · 3 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc46010 (also filed as ci64417). Read Thu, Oct 1, 2026, 6:59 PM UTC.