California earthquakes

M2.8 earthquake 18 km NW of Benton, California

A magnitude 2.8 earthquake struck 18 km NW of Benton, California on Wed, Aug 21, 1985, 6:09 PM PDT (01:09 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M3.5 California-Nevada border region. 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
2.8 (md), micro
Local time
UTC
1985-08-22 01:09:10 UTC
Depth
8.4 km (5.2 mi), shallow
Epicenter
37.949° N, 118.606° 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 0.3 km horizontally, 1.3 km in depth
Magnitude uncertainty
±0.18
Depth from
From location
Station coverage gap
74°
Stations used
35

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 159 in the 60 days after this one and 39 in the 30 days before it.

After

  1. 1.713 km SE of Mammoth Lakes, California · 15007 days ago · 3 km deep · 50 km away
  2. 2.013 km SE of Mammoth Lakes, California · 15007 days ago · 4 km deep · 50 km away
  3. 1.918 km NW of Benton, California · 15007 days ago · 6 km deep · 1 km away
  4. 1.618 km NW of Benton, California · 15007 days ago · 7 km deep · 0 km away
  5. 1.82 km NNW of Mesa, California · 15006 days ago · 9 km deep · 57 km away
  6. 1.711 km SE of Mammoth Lakes, California · 15006 days ago · 4 km deep · 48 km away
  7. 3.5California-Nevada border region · 15006 days ago · 7 km deep · 61 km away
  8. 1.92 km SSE of Round Valley, California · 15006 days ago · 6 km deep · 61 km away
  9. 1.62 km SSE of Round Valley, California · 15006 days ago · 7 km deep · 61 km away
  10. 2.42 km SSE of Round Valley, California · 15006 days ago · 7 km deep · 61 km away
  11. 1.67 km SE of Mammoth Lakes, California · 15006 days ago · 3 km deep · 47 km away
  12. 2.36 km W of Mammoth Lakes, California · 15006 days ago · 1 km deep · 51 km away
  13. 1.62 km NW of Round Valley, California · 15005 days ago · 10 km deep · 57 km away
  14. 3.24 km WNW of Aspen Springs, California · 15005 days ago · 5 km deep · 44 km away
  15. 1.518 km NW of Benton, California · 15005 days ago · 5 km deep · 0 km away
  16. 1.85 km W of Mammoth Lakes, California · 15005 days ago · -1 km deep · 50 km away
  17. 1.614 km WSW of Aspen Springs, California · 15003 days ago · 3 km deep · 52 km away
  18. 1.914 km WSW of Aspen Springs, California · 15003 days ago · 4 km deep · 52 km away
  19. 1.67 km ESE of Swall Meadows, California · 15002 days ago · 6 km deep · 52 km away
  20. 2.13 km NW of Swall Meadows, California · 15002 days ago · 7 km deep · 47 km away
  21. 2.02 km WNW of Round Valley, California · 15002 days ago · 10 km deep · 58 km away
  22. 1.513 km WSW of Aspen Springs, California · 15002 days ago · 5 km deep · 53 km away
  23. 2.13 km WSW of Round Valley, California · 15002 days ago · 9 km deep · 60 km away
  24. 2.120 km SSE of Dyer, Nevada · 15002 days ago · 3 km deep · 76 km away
  25. 4.53 km WSW of Round Valley, California · 15002 days ago · 10 km deep · 60 km away
  26. 2.73 km WSW of Round Valley, California · 15002 days ago · 9 km deep · 60 km away
  27. 1.63 km WSW of Round Valley, California · 15002 days ago · 8 km deep · 60 km away
  28. 1.63 km WSW of Round Valley, California · 15002 days ago · 9 km deep · 60 km away
  29. 1.63 km WSW of Round Valley, California · 15002 days ago · 9 km deep · 60 km away
  30. 1.83 km WSW of Round Valley, California · 15002 days ago · 9 km deep · 60 km away
  31. 2.03 km WSW of Round Valley, California · 15001 days ago · 9 km deep · 60 km away
  32. 1.611 km ENE of Mammoth Lakes, California · 15001 days ago · 5 km deep · 37 km away
  33. 1.88 km WSW of Aspen Springs, California · 15001 days ago · 4 km deep · 49 km away
  34. 2.45 km W of Mammoth Lakes, California · 15001 days ago · 0 km deep · 51 km away
  35. 1.818 km NW of Benton, California · 15000 days ago · 7 km deep · 0 km away
  36. 2.09 km W of Aspen Springs, California · 14999 days ago · 10 km deep · 49 km away
  37. 2.18 km SSW of Aspen Springs, California · 14999 days ago · 10 km deep · 53 km away
  38. 1.54 km WNW of Aspen Springs, California · 14999 days ago · 5 km deep · 44 km away
  39. 2.113 km SW of Aspen Springs, California · 14999 days ago · 2 km deep · 56 km away
  40. 2.17 km WSW of Mammoth Lakes, California · 14999 days ago · 1 km deep · 53 km away
  41. 1.918 km ESE of Yosemite Valley, California · 14998 days ago · 4 km deep · 74 km away
  42. 2.23 km NW of Swall Meadows, California · 14998 days ago · 7 km deep · 47 km away
  43. 1.95 km WSW of Mammoth Lakes, California · 14998 days ago · 0 km deep · 51 km away
  44. 1.632 km ENE of Lee Vining, California · 14998 days ago · 2 km deep · 15 km away
  45. 1.55 km SSW of Swall Meadows, California · 14998 days ago · 3 km deep · 55 km away
  46. 1.73 km NW of Swall Meadows, California · 14998 days ago · 7 km deep · 47 km away
  47. 2.012 km W of Aspen Springs, California · 14997 days ago · 7 km deep · 47 km away
  48. 2.93 km WSW of Round Valley, California · 14997 days ago · 10 km deep · 60 km away
  49. 2.63 km WSW of Round Valley, California · 14997 days ago · 11 km deep · 60 km away
  50. 1.93 km WSW of Round Valley, California · 14997 days ago · 11 km deep · 60 km away
  51. 2.23 km WSW of Round Valley, California · 14997 days ago · 11 km deep · 60 km away
  52. 1.817 km SW of Aspen Springs, California · 14997 days ago · 6 km deep · 61 km away
  53. 2.410 km ESE of Mammoth Lakes, California · 14997 days ago · 7 km deep · 43 km away
  54. 1.64 km N of Round Valley, California · 14997 days ago · 5 km deep · 54 km away
  55. 1.75 km SSW of Swall Meadows, California · 14996 days ago · 4 km deep · 55 km away
  56. 1.88 km ESE of Mammoth Lakes, California · 14996 days ago · 4 km deep · 44 km away
  57. 1.77 km SE of Mammoth Lakes, California · 14996 days ago · 3 km deep · 47 km away
  58. 1.69 km WSW of Aspen Springs, California · 14996 days ago · 4 km deep · 49 km away
  59. 1.511 km W of Aspen Springs, California · 14995 days ago · 7 km deep · 48 km away
  60. 2.013 km SW of Aspen Springs, California · 14995 days ago · 3 km deep · 55 km away

The first 60 of 159.

Before

  1. 2.913 km SE of Mammoth Lakes, California · 15007 days ago · 3 km deep · 50 km away
  2. 1.718 km NW of Benton, California · 15007 days ago · 5 km deep · 1 km away
  3. 1.74 km S of Swall Meadows, California · 15007 days ago · 3 km deep · 54 km away
  4. 1.813 km SE of Mammoth Lakes, California · 15007 days ago · 3 km deep · 50 km away
  5. 2.04 km ESE of Bishop, California · 15007 days ago · 6 km deep · 71 km away
  6. 1.68 km WSW of Aspen Springs, California · 15007 days ago · 3 km deep · 49 km away
  7. 1.712 km ESE of Mammoth Lakes, California · 15007 days ago · 0 km deep · 44 km away
  8. 2.58 km WSW of Aspen Springs, California · 15007 days ago · 3 km deep · 49 km away
  9. 2.18 km WSW of Aspen Springs, California · 15008 days ago · 3 km deep · 49 km away
  10. 2.213 km SSW of Mammoth Lakes, California · 15008 days ago · 3 km deep · 59 km away
  11. 2.24 km WSW of Mammoth Lakes, California · 15008 days ago · -1 km deep · 50 km away
  12. 1.916 km SW of Aspen Springs, California · 15008 days ago · 5 km deep · 59 km away
  13. 2.012 km ESE of Mammoth Lakes, California · 15009 days ago · -1 km deep · 44 km away
  14. 1.95 km W of Mammoth Lakes, California · 15009 days ago · -1 km deep · 50 km away
  15. 1.911 km SW of Aspen Springs, California · 15009 days ago · 7 km deep · 55 km away
  16. 1.713 km SW of Aspen Springs, California · 15009 days ago · 8 km deep · 56 km away
  17. 1.536 km E of Mono City, California · 15010 days ago · 3 km deep · 18 km away
  18. 2.78 km WSW of Aspen Springs, California · 15010 days ago · 4 km deep · 49 km away
  19. 1.66 km NNE of Mesa, California · 15011 days ago · 12 km deep · 53 km away
  20. 1.77 km N of Mesa, California · 15011 days ago · 3 km deep · 52 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc53486 (also filed as ci70820). Read Tue, Sep 22, 2026, 4:16 PM UTC.