California earthquakes

M2.5 earthquake 9 km SSW of Ridgemark, California

A magnitude 2.5 earthquake struck 9 km SSW of Ridgemark, California on Mon, Jul 16, 1990, 12:58 PM PDT (19:58 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M4.4 14 km S of Tres Pinos, California. This one was a foreshock.

Ridgemark forecastMore in California

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
2.5 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1990-07-16 19:58:20 UTC
Depth
6.1 km (3.8 mi), shallow
Epicenter
36.736° N, 121.404° 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 0.1 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
32°
Stations used
62

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 178 in the 60 days after this one and 95 in the 30 days before it.

After

  1. 1.931 km ENE of Soledad, California · 13228 days ago · 8 km deep · 38 km away
  2. 3.44 km ESE of Interlaken, California · 13227 days ago · 12 km deep · 33 km away
  3. 3.04 km ESE of Interlaken, California · 13227 days ago · 11 km deep · 33 km away
  4. 2.15 km ESE of Interlaken, California · 13227 days ago · 11 km deep · 33 km away
  5. 2.37 km NE of Hollister, California · 13227 days ago · 7 km deep · 19 km away
  6. 2.313 km N of Morgan Hill, California · 13227 days ago · 5 km deep · 61 km away
  7. 1.62 km SW of Lexington Hills, California · 13227 days ago · 12 km deep · 70 km away
  8. 1.613 km N of Morgan Hill, California · 13227 days ago · 5 km deep · 61 km away
  9. 1.713 km N of Morgan Hill, California · 13227 days ago · 3 km deep · 61 km away
  10. 2.137 km SSW of South Dos Palos, California · 13227 days ago · 7 km deep · 50 km away
  11. 1.64 km ESE of Aromas, California · 13226 days ago · 6 km deep · 22 km away
  12. 1.95 km ESE of Interlaken, California · 13226 days ago · 11 km deep · 33 km away
  13. 2.1Northern California · 13226 days ago · 15 km deep · 49 km away
  14. 1.716 km E of Seven Trees, California · 13226 days ago · 6 km deep · 65 km away
  15. 1.81 km ENE of Aromas, California · 13225 days ago · 5 km deep · 26 km away
  16. 2.35 km ESE of Interlaken, California · 13222 days ago · 10 km deep · 33 km away
  17. 1.84 km ESE of Interlaken, California · 13222 days ago · 11 km deep · 34 km away
  18. 1.77 km NE of Interlaken, California · 13222 days ago · 3 km deep · 37 km away
  19. 1.86 km NE of Interlaken, California · 13222 days ago · 3 km deep · 37 km away
  20. 1.72 km SE of San Ardo, California · 13222 days ago · 9 km deep · 94 km away
  21. 1.818 km SE of Tres Pinos, California · 13222 days ago · 15 km deep · 22 km away
  22. 2.18 km SSW of Tres Pinos, California · 13222 days ago · 3 km deep · 4 km away
  23. 1.524 km ENE of Soledad, California · 13221 days ago · 1 km deep · 35 km away
  24. 2.23 km SE of Aromas, California · 13220 days ago · 9 km deep · 24 km away
  25. 2.910 km WSW of Ridgemark, California · 13220 days ago · 6 km deep · 6 km away
  26. 1.610 km WSW of Ridgemark, California · 13220 days ago · 7 km deep · 6 km away
  27. 2.56 km SW of Ridgemark, California · 13220 days ago · 9 km deep · 4 km away
  28. 2.230 km ENE of Soledad, California · 13220 days ago · 7 km deep · 37 km away
  29. 1.83 km NNW of Aromas, California · 13219 days ago · 8 km deep · 30 km away
  30. 2.510 km WSW of Ridgemark, California · 13219 days ago · 7 km deep · 6 km away
  31. 2.23 km W of San Juan Bautista, California · 13218 days ago · 5 km deep · 20 km away
  32. 1.523 km ENE of Soledad, California · 13218 days ago · 4 km deep · 39 km away
  33. 1.724 km ENE of Soledad, California · 13218 days ago · 2 km deep · 40 km away
  34. 1.624 km ENE of Soledad, California · 13218 days ago · 2 km deep · 40 km away
  35. 1.512 km ESE of Tres Pinos, California · 13217 days ago · 8 km deep · 20 km away
  36. 1.7Northern California · 13217 days ago · 1 km deep · 74 km away
  37. 2.511 km S of Tres Pinos, California · 13217 days ago · 3 km deep · 9 km away
  38. 2.023 km NE of San Ardo, California · 13217 days ago · 7 km deep · 83 km away
  39. 1.911 km S of Tres Pinos, California · 13217 days ago · 3 km deep · 9 km away
  40. 1.711 km S of Tres Pinos, California · 13217 days ago · 4 km deep · 9 km away
  41. 2.02 km E of La Honda, California · 13216 days ago · 7 km deep · 99 km away
  42. 1.64 km ESE of Interlaken, California · 13215 days ago · 11 km deep · 34 km away
  43. 1.6Central California · 13215 days ago · 5 km deep · 61 km away
  44. 1.614 km E of Seven Trees, California · 13215 days ago · 1 km deep · 67 km away
  45. 1.64 km W of Lexington Hills, California · 13215 days ago · 12 km deep · 73 km away
  46. 1.622 km NE of San Lucas, California · 13215 days ago · 7 km deep · 71 km away
  47. 2.12 km E of Aromas, California · 13215 days ago · 7 km deep · 25 km away
  48. 2.418 km SSE of Tres Pinos, California · 13214 days ago · 10 km deep · 18 km away
  49. 1.5Central California · 13214 days ago · 5 km deep · 33 km away
  50. 1.9Central California · 13213 days ago · 6 km deep · 72 km away
  51. 1.624 km NE of Soledad, California · 13213 days ago · 11 km deep · 31 km away
  52. 1.514 km E of Seven Trees, California · 13213 days ago · 2 km deep · 66 km away
  53. 1.69 km S of Carmel Valley Village, California · 13213 days ago · 7 km deep · 47 km away
  54. 1.94 km ESE of Interlaken, California · 13212 days ago · 11 km deep · 34 km away
  55. 1.8Central California · 13212 days ago · 4 km deep · 12 km away
  56. 1.813 km S of Tres Pinos, California · 13212 days ago · 4 km deep · 12 km away
  57. 2.220 km W of Three Rocks, California · 13211 days ago · 7 km deep · 73 km away
  58. 1.75 km SW of Gilroy, California · 13211 days ago · 3 km deep · 31 km away
  59. 2.918 km SSE of Tres Pinos, California · 13211 days ago · 10 km deep · 18 km away
  60. 1.623 km NE of King City, California · 13211 days ago · 8 km deep · 57 km away

The first 60 of 178.

Before

  1. 1.92 km SSW of Lexington Hills, California · 13228 days ago · 12 km deep · 68 km away
  2. 2.613 km N of Morgan Hill, California · 13228 days ago · 5 km deep · 61 km away
  3. 2.21 km ESE of Aromas, California · 13228 days ago · 8 km deep · 26 km away
  4. 1.6Central California · 13229 days ago · 6 km deep · 19 km away
  5. 1.721 km NNE of Soledad, California · 13229 days ago · 6 km deep · 25 km away
  6. 2.5Central California · 13229 days ago · 9 km deep · 19 km away
  7. 1.72 km WNW of Corralitos, California · 13229 days ago · 12 km deep · 48 km away
  8. 1.63 km W of Lexington Hills, California · 13230 days ago · 13 km deep · 72 km away
  9. 1.83 km W of Lexington Hills, California · 13230 days ago · 12 km deep · 73 km away
  10. 1.51 km WNW of Corralitos, California · 13230 days ago · 12 km deep · 47 km away
  11. 2.15 km ESE of Interlaken, California · 13231 days ago · 11 km deep · 33 km away
  12. 1.83 km W of San Juan Bautista, California · 13231 days ago · 5 km deep · 20 km away
  13. 2.02 km NNE of Amesti, California · 13232 days ago · 20 km deep · 42 km away
  14. 2.17 km N of Interlaken, California · 13232 days ago · 6 km deep · 42 km away
  15. 1.52 km SE of San Ardo, California · 13233 days ago · 8 km deep · 94 km away
  16. 2.26 km WNW of Day Valley, California · 13233 days ago · 16 km deep · 59 km away
  17. 1.54 km NNW of Day Valley, California · 13234 days ago · 14 km deep · 57 km away
  18. 1.823 km ENE of San Lucas, California · 13234 days ago · 6 km deep · 77 km away
  19. 2.923 km ENE of San Lucas, California · 13235 days ago · 6 km deep · 77 km away
  20. 1.94 km E of Interlaken, California · 13235 days ago · 6 km deep · 34 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc161167. Read Sat, Oct 3, 2026, 1:10 PM UTC.