California earthquakes

M1.5 earthquake 1 km E of Ridgemark, California

A magnitude 1.5 earthquake struck 1 km E of Ridgemark, California on Tue, Jun 13, 1989, 3:58 AM PDT (10:58 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M5.4 4 km ESE of Lexington Hills, 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
1.5 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1989-06-13 10:58:57 UTC
Depth
5.9 km (3.7 mi), shallow
Epicenter
36.813° N, 121.347° 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, 0.4 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
78°
Stations used
38

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 148 in the 60 days after this one and 54 in the 30 days before it.

After

  1. 1.68 km NE of Milpitas, California · 13627 days ago · 7 km deep · 86 km away
  2. 1.721 km NE of Soledad, California · 13625 days ago · 6 km deep · 34 km away
  3. 2.97 km ENE of Gilroy, California · 13624 days ago · 7 km deep · 27 km away
  4. 2.015 km SSE of Livermore, California · 13622 days ago · 6 km deep · 88 km away
  5. 2.822 km NNE of Soledad, California · 13622 days ago · 6 km deep · 28 km away
  6. 1.57 km NW of Boulder Creek, California · 13622 days ago · 6 km deep · 84 km away
  7. 2.013 km S of Tres Pinos, California · 13622 days ago · 2 km deep · 17 km away
  8. 2.422 km NNE of Soledad, California · 13622 days ago · 6 km deep · 28 km away
  9. 1.812 km WNW of Moss Landing, California · 13622 days ago · 5 km deep · 51 km away
  10. 1.923 km NE of King City, California · 13621 days ago · 6 km deep · 59 km away
  11. 1.77 km SSE of Gilroy, California · 13621 days ago · 5 km deep · 22 km away
  12. 1.724 km NE of Greenfield, California · 13620 days ago · 5 km deep · 47 km away
  13. 3.37 km E of East Foothills, California · 13619 days ago · 9 km deep · 72 km away
  14. 2.424 km ENE of Soledad, California · 13619 days ago · 2 km deep · 44 km away
  15. 2.414 km SSW of Santa Cruz, California · 13618 days ago · 7 km deep · 68 km away
  16. 1.68 km SE of Livermore, California · 13617 days ago · 7 km deep · 96 km away
  17. 2.413 km SSW of Santa Cruz, California · 13616 days ago · 0 km deep · 67 km away
  18. 2.324 km NE of Greenfield, California · 13614 days ago · 6 km deep · 47 km away
  19. 2.5Central California · 13614 days ago · 3 km deep · 30 km away
  20. 2.78 km NE of San Martin, California · 13613 days ago · 8 km deep · 39 km away
  21. 2.08 km ESE of Seven Trees, California · 13612 days ago · 4 km deep · 60 km away
  22. 2.123 km NE of Greenfield, California · 13612 days ago · 5 km deep · 47 km away
  23. 1.62 km NNW of Hollister, California · 13612 days ago · 7 km deep · 9 km away
  24. 1.910 km SW of Ripon, California · 13611 days ago · 13 km deep · 96 km away
  25. 2.66 km E of East Foothills, California · 13611 days ago · 6 km deep · 72 km away
  26. 1.913 km ENE of East Foothills, California · 13611 days ago · 6 km deep · 73 km away
  27. 1.54 km N of Corralitos, California · 13611 days ago · 14 km deep · 47 km away
  28. 1.514 km N of Morgan Hill, California · 13610 days ago · 6 km deep · 56 km away
  29. 1.722 km NNE of Soledad, California · 13609 days ago · 1 km deep · 27 km away
  30. 1.511 km ENE of East Foothills, California · 13609 days ago · 7 km deep · 75 km away
  31. 2.512 km SSE of Tres Pinos, California · 13608 days ago · 5 km deep · 15 km away
  32. 1.712 km SSE of Tres Pinos, California · 13608 days ago · 5 km deep · 15 km away
  33. 1.710 km SSE of Big Sur, California · 13606 days ago · 20 km deep · 79 km away
  34. 1.918 km ENE of Gonzales, California · 13606 days ago · 6 km deep · 26 km away
  35. 2.221 km NE of East Foothills, California · 13606 days ago · 7 km deep · 79 km away
  36. 1.815 km E of Seven Trees, California · 13605 days ago · 6 km deep · 59 km away
  37. 2.06 km NE of East Foothills, California · 13605 days ago · 7 km deep · 77 km away
  38. 2.4Central California · 13604 days ago · 2 km deep · 43 km away
  39. 2.021 km NE of Soledad, California · 13603 days ago · 6 km deep · 29 km away
  40. 1.66 km SW of Gilroy, California · 13603 days ago · 5 km deep · 30 km away
  41. 2.36 km SW of Gilroy, California · 13603 days ago · 4 km deep · 30 km away
  42. 2.810 km ENE of East Foothills, California · 13602 days ago · 7 km deep · 75 km away
  43. 1.727 km NE of Soledad, California · 13601 days ago · 7 km deep · 35 km away
  44. 3.96 km ENE of East Foothills, California · 13601 days ago · 8 km deep · 76 km away
  45. 1.816 km SSE of Livermore, California · 13600 days ago · 2 km deep · 88 km away
  46. 2.328 km ENE of Soledad, California · 13600 days ago · 9 km deep · 38 km away
  47. 1.928 km ENE of Soledad, California · 13600 days ago · 9 km deep · 39 km away
  48. 1.911 km SSW of Carmel-by-the-Sea, California · 13600 days ago · 5 km deep · 69 km away
  49. 1.628 km ENE of Soledad, California · 13599 days ago · 9 km deep · 39 km away
  50. 1.56 km NE of Ridgemark, California · 13599 days ago · 6 km deep · 5 km away
  51. 2.07 km ENE of Interlaken, California · 13597 days ago · 8 km deep · 34 km away
  52. 2.121 km SSE of Tres Pinos, California · 13597 days ago · 5 km deep · 24 km away
  53. 2.426 km ENE of Soledad, California · 13596 days ago · 8 km deep · 38 km away
  54. 2.111 km ESE of Gilroy, California · 13595 days ago · 5 km deep · 18 km away
  55. 2.019 km WNW of Diablo Grande, California · 13594 days ago · 3 km deep · 76 km away
  56. 2.429 km E of Tres Pinos, California · 13594 days ago · 4 km deep · 32 km away
  57. 2.510 km S of Tres Pinos, California · 13594 days ago · 5 km deep · 13 km away
  58. 2.430 km E of Tres Pinos, California · 13594 days ago · 4 km deep · 33 km away
  59. 1.715 km E of Seven Trees, California · 13593 days ago · 6 km deep · 60 km away
  60. 1.912 km ESE of East Foothills, California · 13593 days ago · 8 km deep · 64 km away

The first 60 of 148.

Before

  1. 1.723 km ENE of Soledad, California · 13627 days ago · 5 km deep · 43 km away
  2. 1.72 km SSW of Hollister, California · 13628 days ago · 8 km deep · 6 km away
  3. 2.114 km SSE of Tres Pinos, California · 13628 days ago · 4 km deep · 18 km away
  4. 1.914 km SSE of Tres Pinos, California · 13628 days ago · 4 km deep · 18 km away
  5. 2.021 km NE of Soledad, California · 13629 days ago · 2 km deep · 33 km away
  6. 1.7Central California · 13629 days ago · 4 km deep · 16 km away
  7. 2.114 km SSE of Tres Pinos, California · 13630 days ago · 8 km deep · 18 km away
  8. 1.624 km ENE of Greenfield, California · 13630 days ago · 5 km deep · 54 km away
  9. 2.724 km ENE of Greenfield, California · 13630 days ago · 7 km deep · 54 km away
  10. 1.5Central California · 13630 days ago · 4 km deep · 28 km away
  11. 1.722 km NNE of Soledad, California · 13630 days ago · 5 km deep · 28 km away
  12. 2.17 km E of East Foothills, California · 13631 days ago · 7 km deep · 72 km away
  13. 2.49 km S of Tres Pinos, California · 13632 days ago · 3 km deep · 12 km away
  14. 1.86 km ENE of East Foothills, California · 13632 days ago · 7 km deep · 74 km away
  15. 1.710 km SSE of South Dos Palos, California · 13632 days ago · 2 km deep · 65 km away
  16. 1.87 km NNE of East Foothills, California · 13632 days ago · 8 km deep · 79 km away
  17. 2.44 km NE of Tres Pinos, California · 13632 days ago · 8 km deep · 5 km away
  18. 2.14 km NE of Tres Pinos, California · 13632 days ago · 8 km deep · 5 km away
  19. 2.66 km ENE of East Foothills, California · 13634 days ago · 10 km deep · 76 km away
  20. 2.33 km ESE of Aromas, California · 13636 days ago · 7 km deep · 24 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc138067. Read Sun, Oct 4, 2026, 9:00 AM UTC.