California earthquakes

M1.8 earthquake 24 km ENE of Greenfield, California

A magnitude 1.8 earthquake struck 24 km ENE of Greenfield, California on Fri, Mar 8, 1985, 4:43 PM PST (00:43 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.7 10 km NE of Coalinga, 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), micro
Local time
UTC
1985-03-09 00:43:57 UTC
Depth
5.0 km (3.1 mi), shallow
Epicenter
36.435° N, 121.007° 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, 1.3 km in depth
Magnitude uncertainty
±0.24
Depth from
From location
Station coverage gap
117°
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: 187 in the 60 days after this one and 96 in the 30 days before it.

After

  1. 3.022 km NE of San Ardo, California · 15180 days ago · 9 km deep · 38 km away
  2. 2.923 km NE of San Ardo, California · 15180 days ago · 9 km deep · 38 km away
  3. 1.78 km WNW of Avenal, California · 15180 days ago · 9 km deep · 84 km away
  4. 2.513 km NNW of Big Sur, California · 15180 days ago · 0 km deep · 76 km away
  5. 1.924 km NE of Greenfield, California · 15180 days ago · 5 km deep · 5 km away
  6. 1.522 km ENE of Soledad, California · 15180 days ago · 5 km deep · 12 km away
  7. 2.015 km NNW of Coalinga, California · 15179 days ago · 7 km deep · 56 km away
  8. 1.518 km ESE of Tres Pinos, California · 15179 days ago · 5 km deep · 35 km away
  9. 2.424 km ENE of Soledad, California · 15179 days ago · 2 km deep · 9 km away
  10. 2.821 km NE of Soledad, California · 15177 days ago · 8 km deep · 17 km away
  11. 1.66 km WSW of Gilroy, California · 15176 days ago · 5 km deep · 83 km away
  12. 1.99 km E of San Martin, California · 15176 days ago · 8 km deep · 85 km away
  13. 1.922 km NNE of Soledad, California · 15176 days ago · 2 km deep · 25 km away
  14. 1.535 km NE of King City, California · 15176 days ago · 15 km deep · 14 km away
  15. 1.824 km NE of Greenfield, California · 15176 days ago · 5 km deep · 4 km away
  16. 2.04 km E of Day Valley, California · 15175 days ago · 10 km deep · 98 km away
  17. 1.611 km NW of Parkfield, California · 15174 days ago · 11 km deep · 67 km away
  18. 1.715 km N of Coalinga, California · 15174 days ago · 8 km deep · 62 km away
  19. 1.721 km NE of Soledad, California · 15174 days ago · 7 km deep · 17 km away
  20. 2.4Central California · 15174 days ago · 8 km deep · 58 km away
  21. 1.724 km NE of Greenfield, California · 15173 days ago · 7 km deep · 3 km away
  22. 2.57 km ENE of Morgan Hill, California · 15171 days ago · 4 km deep · 96 km away
  23. 2.68 km NE of Gilroy, California · 15171 days ago · 4 km deep · 82 km away
  24. 1.521 km NE of Soledad, California · 15171 days ago · 5 km deep · 16 km away
  25. 2.430 km ENE of Soledad, California · 15171 days ago · 7 km deep · 15 km away
  26. 1.55 km SSW of Ridgemark, California · 15170 days ago · 9 km deep · 50 km away
  27. 1.611 km ENE of Coalinga, California · 15170 days ago · 12 km deep · 74 km away
  28. 1.921 km NE of Soledad, California · 15170 days ago · 7 km deep · 17 km away
  29. 1.522 km NE of Soledad, California · 15170 days ago · 8 km deep · 17 km away
  30. 2.224 km NE of Greenfield, California · 15170 days ago · 2 km deep · 6 km away
  31. 1.87 km NNE of San Simeon, California · 15169 days ago · 4 km deep · 83 km away
  32. 2.84 km E of San Juan Bautista, California · 15169 days ago · 8 km deep · 63 km away
  33. 2.423 km NE of King City, California · 15167 days ago · 7 km deep · 7 km away
  34. 1.619 km SSE of Tres Pinos, California · 15167 days ago · 5 km deep · 29 km away
  35. 1.722 km NE of Soledad, California · 15167 days ago · 7 km deep · 17 km away
  36. 1.67 km ENE of Gilroy, California · 15167 days ago · 6 km deep · 79 km away
  37. 1.811 km SW of Huron, California · 15166 days ago · 8 km deep · 79 km away
  38. 2.26 km NNE of Coalinga, California · 15166 days ago · 11 km deep · 65 km away
  39. 2.219 km SSE of Tres Pinos, California · 15166 days ago · 5 km deep · 29 km away
  40. 2.723 km ENE of Soledad, California · 15166 days ago · 4 km deep · 11 km away
  41. 1.912 km NNE of Coalinga, California · 15165 days ago · 9 km deep · 65 km away
  42. 3.027 km E of Tres Pinos, California · 15165 days ago · 5 km deep · 36 km away
  43. 1.99 km NNW of Hollister, California · 15165 days ago · 2 km deep · 67 km away
  44. 1.79 km ENE of Morgan Hill, California · 15164 days ago · 5 km deep · 94 km away
  45. 2.323 km ENE of San Lucas, California · 15163 days ago · 6 km deep · 28 km away
  46. 1.611 km WNW of Templeton, California · 15163 days ago · 6 km deep · 94 km away
  47. 1.811 km WSW of Huron, California · 15163 days ago · 9 km deep · 78 km away
  48. 2.7Central California · 15163 days ago · 5 km deep · 16 km away
  49. 1.624 km ENE of Greenfield, California · 15162 days ago · 6 km deep · 1 km away
  50. 3.214 km NNW of Coalinga, California · 15162 days ago · 8 km deep · 55 km away
  51. 2.312 km ENE of Coalinga, California · 15162 days ago · 11 km deep · 75 km away
  52. 1.816 km N of Coalinga, California · 15162 days ago · 8 km deep · 62 km away
  53. 1.715 km NW of Parkfield, California · 15162 days ago · 3 km deep · 63 km away
  54. 2.015 km N of Coalinga, California · 15162 days ago · 8 km deep · 63 km away
  55. 1.78 km N of Coalinga, California · 15162 days ago · 12 km deep · 63 km away
  56. 1.77 km SSW of Huron, California · 15161 days ago · 17 km deep · 84 km away
  57. 1.815 km NNW of Coalinga, California · 15161 days ago · 7 km deep · 56 km away
  58. 3.08 km E of Coalinga, California · 15161 days ago · 9 km deep · 74 km away
  59. 1.913 km S of Tres Pinos, California · 15161 days ago · 5 km deep · 36 km away
  60. 2.321 km NE of Soledad, California · 15160 days ago · 4 km deep · 16 km away

The first 60 of 187.

Before

  1. 1.611 km NNW of Coalinga, California · 15182 days ago · 6 km deep · 58 km away
  2. 1.58 km NE of San Martin, California · 15182 days ago · 7 km deep · 91 km away
  3. 1.817 km N of Coalinga, California · 15182 days ago · 7 km deep · 58 km away
  4. 2.210 km NE of Coalinga, California · 15182 days ago · 10 km deep · 72 km away
  5. 1.97 km ESE of Avenal, California · 15183 days ago · 11 km deep · 100 km away
  6. 2.09 km ENE of Coalinga, California · 15184 days ago · 7 km deep · 72 km away
  7. 1.6Central California · 15184 days ago · 9 km deep · 62 km away
  8. 2.615 km N of Coalinga, California · 15184 days ago · 8 km deep · 62 km away
  9. 1.721 km NE of Soledad, California · 15185 days ago · 7 km deep · 21 km away
  10. 2.124 km ENE of Greenfield, California · 15185 days ago · 5 km deep · 3 km away
  11. 2.49 km ENE of Morgan Hill, California · 15186 days ago · 5 km deep · 94 km away
  12. 1.78 km NNE of Coalinga, California · 15188 days ago · 11 km deep · 65 km away
  13. 1.910 km N of Coalinga, California · 15188 days ago · 10 km deep · 62 km away
  14. 1.710 km NE of Coalinga, California · 15188 days ago · 12 km deep · 69 km away
  15. 1.611 km NNE of Coalinga, California · 15188 days ago · 9 km deep · 65 km away
  16. 1.611 km ENE of Coalinga, California · 15189 days ago · 10 km deep · 75 km away
  17. 1.816 km NNW of Coalinga, California · 15189 days ago · 7 km deep · 55 km away
  18. 2.324 km NE of Greenfield, California · 15189 days ago · 7 km deep · 6 km away
  19. 2.224 km ENE of Greenfield, California · 15191 days ago · 5 km deep · 3 km away
  20. 1.79 km E of San Martin, California · 15191 days ago · 8 km deep · 85 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc43328. Read Wed, Sep 30, 2026, 6:42 PM UTC.