California earthquakes

M1.8 earthquake 23 km SSW of Round Valley, California

A magnitude 1.8 earthquake struck 23 km SSW of Round Valley, California on Mon, Aug 5, 1985, 1:09 AM PDT (08:09 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M4.5 3 km WSW of Round Valley, 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
1985-08-05 08:09:13 UTC
Depth
3.0 km (1.8 mi), shallow
Epicenter
37.214° N, 118.660° 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 3.9 km horizontally, 8.0 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
244°, poorly surrounded by stations
Stations used
11

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 184 in the 60 days after this one and 58 in the 30 days before it.

After

  1. 2.38 km SSW of Mammoth Lakes, California · 15033 days ago · 4 km deep · 50 km away
  2. 2.212 km WNW of Aspen Springs, California · 15033 days ago · 6 km deep · 45 km away
  3. 2.112 km WNW of Aspen Springs, California · 15032 days ago · 6 km deep · 45 km away
  4. 1.59 km N of Mammoth Lakes, California · 15032 days ago · 2 km deep · 64 km away
  5. 2.05 km N of Mesa, California · 15032 days ago · 8 km deep · 30 km away
  6. 2.012 km W of Aspen Springs, California · 15032 days ago · 7 km deep · 42 km away
  7. 1.612 km W of Aspen Springs, California · 15032 days ago · 7 km deep · 42 km away
  8. 2.55 km W of Mammoth Lakes, California · 15032 days ago · -1 km deep · 58 km away
  9. 2.07 km WSW of Swall Meadows, California · 15032 days ago · 2 km deep · 29 km away
  10. 1.813 km SW of Aspen Springs, California · 15031 days ago · 5 km deep · 34 km away
  11. 1.76 km E of Swall Meadows, California · 15031 days ago · 3 km deep · 33 km away
  12. 2.14 km NNW of Round Valley, California · 15031 days ago · 8 km deep · 27 km away
  13. 1.89 km WSW of Aspen Springs, California · 15031 days ago · 4 km deep · 38 km away
  14. 1.813 km SW of Aspen Springs, California · 15031 days ago · 4 km deep · 33 km away
  15. 1.513 km SW of Aspen Springs, California · 15030 days ago · 4 km deep · 33 km away
  16. 2.09 km W of Aspen Springs, California · 15030 days ago · 7 km deep · 40 km away
  17. 1.736 km E of Mono City, California · 15030 days ago · 2 km deep · 97 km away
  18. 1.59 km W of Aspen Springs, California · 15030 days ago · 7 km deep · 40 km away
  19. 1.95 km NNW of Mesa, California · 15030 days ago · 8 km deep · 30 km away
  20. 1.75 km NW of Round Valley, California · 15030 days ago · 7 km deep · 27 km away
  21. 1.710 km WNW of Aspen Springs, California · 15029 days ago · 4 km deep · 45 km away
  22. 1.915 km ESE of Yosemite Valley, California · 15029 days ago · 4 km deep · 85 km away
  23. 1.76 km WSW of Aspen Springs, California · 15029 days ago · 0 km deep · 36 km away
  24. 1.912 km SE of Mammoth Lakes, California · 15029 days ago · 4 km deep · 43 km away
  25. 2.113 km W of Aspen Springs, California · 15029 days ago · 6 km deep · 41 km away
  26. 1.54 km NNW of Round Valley, California · 15028 days ago · 6 km deep · 27 km away
  27. 1.98 km WSW of Aspen Springs, California · 15027 days ago · 4 km deep · 38 km away
  28. 2.55 km WSW of Mammoth Lakes, California · 15026 days ago · -1 km deep · 57 km away
  29. 1.65 km WSW of Mammoth Lakes, California · 15026 days ago · -1 km deep · 58 km away
  30. 1.69 km ESE of Mammoth Lakes, California · 15025 days ago · 5 km deep · 49 km away
  31. 2.09 km ESE of Mammoth Lakes, California · 15025 days ago · 5 km deep · 49 km away
  32. 1.87 km ESE of Wilkerson, California · 15025 days ago · 3 km deep · 32 km away
  33. 2.45 km W of Mammoth Lakes, California · 15025 days ago · -1 km deep · 59 km away
  34. 2.14 km NNW of Round Valley, California · 15024 days ago · 11 km deep · 28 km away
  35. 1.911 km W of Aspen Springs, California · 15024 days ago · 2 km deep · 42 km away
  36. 2.06 km W of Mammoth Lakes, California · 15024 days ago · -1 km deep · 59 km away
  37. 1.55 km NE of Mesa, California · 15024 days ago · 1 km deep · 31 km away
  38. 1.69 km ESE of Mammoth Lakes, California · 15023 days ago · 5 km deep · 49 km away
  39. 1.84 km WNW of Aspen Springs, California · 15023 days ago · 5 km deep · 41 km away
  40. 1.81 km SSW of Round Valley, California · 15022 days ago · 4 km deep · 23 km away
  41. 2.35 km W of Mammoth Lakes, California · 15022 days ago · -2 km deep · 59 km away
  42. 2.25 km W of Mammoth Lakes, California · 15022 days ago · -1 km deep · 58 km away
  43. 1.85 km NW of Round Valley, California · 15021 days ago · 7 km deep · 27 km away
  44. 2.15 km NNE of Mesa, California · 15021 days ago · 12 km deep · 30 km away
  45. 1.77 km N of Mesa, California · 15021 days ago · 3 km deep · 32 km away
  46. 1.66 km NNE of Mesa, California · 15021 days ago · 12 km deep · 31 km away
  47. 2.78 km WSW of Aspen Springs, California · 15020 days ago · 4 km deep · 38 km away
  48. 1.536 km E of Mono City, California · 15020 days ago · 3 km deep · 96 km away
  49. 1.713 km SW of Aspen Springs, California · 15019 days ago · 8 km deep · 32 km away
  50. 1.911 km SW of Aspen Springs, California · 15019 days ago · 7 km deep · 32 km away
  51. 1.95 km W of Mammoth Lakes, California · 15019 days ago · -1 km deep · 59 km away
  52. 2.012 km ESE of Mammoth Lakes, California · 15019 days ago · -1 km deep · 46 km away
  53. 1.916 km SW of Aspen Springs, California · 15018 days ago · 5 km deep · 31 km away
  54. 2.24 km WSW of Mammoth Lakes, California · 15018 days ago · -1 km deep · 57 km away
  55. 2.213 km SSW of Mammoth Lakes, California · 15018 days ago · 3 km deep · 48 km away
  56. 2.18 km WSW of Aspen Springs, California · 15018 days ago · 3 km deep · 38 km away
  57. 2.58 km WSW of Aspen Springs, California · 15017 days ago · 3 km deep · 38 km away
  58. 1.712 km ESE of Mammoth Lakes, California · 15017 days ago · 0 km deep · 46 km away
  59. 1.68 km WSW of Aspen Springs, California · 15017 days ago · 3 km deep · 38 km away
  60. 2.04 km ESE of Bishop, California · 15017 days ago · 6 km deep · 32 km away

The first 60 of 184.

Before

  1. 2.24 km SSE of Swall Meadows, California · 15033 days ago · 8 km deep · 28 km away
  2. 1.715 km SW of Aspen Springs, California · 15034 days ago · 7 km deep · 32 km away
  3. 1.74 km N of Round Valley, California · 15035 days ago · 7 km deep · 29 km away
  4. 2.05 km W of Mammoth Lakes, California · 15036 days ago · -1 km deep · 58 km away
  5. 1.85 km W of Mammoth Lakes, California · 15036 days ago · -1 km deep · 59 km away
  6. 2.712 km W of Aspen Springs, California · 15036 days ago · 9 km deep · 40 km away
  7. 2.15 km SSE of Swall Meadows, California · 15036 days ago · 9 km deep · 28 km away
  8. 2.62 km NNW of Round Valley, California · 15037 days ago · 0 km deep · 26 km away
  9. 2.112 km ENE of Mammoth Lakes, California · 15039 days ago · 0 km deep · 57 km away
  10. 1.96 km W of Aspen Springs, California · 15040 days ago · 6 km deep · 39 km away
  11. 2.24 km SSE of Swall Meadows, California · 15041 days ago · 10 km deep · 28 km away
  12. 2.111 km SW of Aspen Springs, California · 15041 days ago · 13 km deep · 33 km away
  13. 2.57 km SE of Wilkerson, California · 15041 days ago · 9 km deep · 29 km away
  14. 2.17 km E of Mammoth Lakes, California · 15042 days ago · 11 km deep · 52 km away
  15. 2.15 km S of Aspen Springs, California · 15042 days ago · 6 km deep · 32 km away
  16. 1.820 km ESE of Yosemite Valley, California · 15043 days ago · 4 km deep · 82 km away
  17. 1.625 km ENE of Fish Camp, California · 15043 days ago · 4 km deep · 73 km away
  18. 1.85 km W of Mammoth Lakes, California · 15044 days ago · -1 km deep · 59 km away
  19. 1.712 km SW of Aspen Springs, California · 15044 days ago · 6 km deep · 32 km away
  20. 1.531 km NW of Benton, California · 15045 days ago · -1 km deep · 90 km away

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From the USGS Earthquake Hazards Program and its partner networks, event nc52253. Read Fri, Oct 2, 2026, 1:20 PM UTC.