California earthquakes

M1.9 earthquake 6 km NE of Ridgemark, California

A magnitude 1.9 earthquake struck 6 km NE of Ridgemark, California on Sun, Nov 12, 1989, 10:30 AM PST (18:30 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M4.4 Central 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
1.9 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1989-11-12 18:30:29 UTC
Depth
7.0 km (4.3 mi), shallow
Epicenter
36.852° N, 121.317° 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
±0.17
Depth from
From location
Station coverage gap
55°
Stations used
59

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 196 in the 60 days after this one and 197 in the 30 days before it.

After

  1. 1.911 km N of Boulder Creek, California · 13475 days ago · 10 km deep · 84 km away
  2. 2.82 km WSW of San Juan Bautista, California · 13475 days ago · 6 km deep · 22 km away
  3. 1.924 km NE of Greenfield, California · 13475 days ago · 5 km deep · 50 km away
  4. 2.823 km NE of Greenfield, California · 13475 days ago · 5 km deep · 50 km away
  5. 1.624 km NE of Greenfield, California · 13475 days ago · 5 km deep · 50 km away
  6. 1.724 km NE of Greenfield, California · 13475 days ago · 5 km deep · 50 km away
  7. 1.924 km NE of Greenfield, California · 13475 days ago · 5 km deep · 50 km away
  8. 1.57 km S of La Selva Beach, California · 13475 days ago · 0 km deep · 48 km away
  9. 2.24 km NNW of Aromas, California · 13475 days ago · 11 km deep · 32 km away
  10. 1.66 km S of Lexington Hills, California · 13475 days ago · 14 km deep · 64 km away
  11. 1.831 km NE of Soledad, California · 13475 days ago · 8 km deep · 37 km away
  12. 2.223 km NE of Greenfield, California · 13475 days ago · 5 km deep · 50 km away
  13. 1.510 km N of Boulder Creek, California · 13475 days ago · 9 km deep · 84 km away
  14. 1.52 km NE of Interlaken, California · 13475 days ago · 12 km deep · 38 km away
  15. 1.73 km E of Corralitos, California · 13474 days ago · 14 km deep · 43 km away
  16. 1.63 km NW of Lexington Hills, California · 13474 days ago · 10 km deep · 71 km away
  17. 1.73 km NE of Interlaken, California · 13474 days ago · 13 km deep · 37 km away
  18. 1.510 km NW of Davenport, California · 13474 days ago · 5 km deep · 89 km away
  19. 1.824 km NE of Greenfield, California · 13474 days ago · 5 km deep · 51 km away
  20. 2.04 km NNW of Aromas, California · 13474 days ago · 11 km deep · 32 km away
  21. 1.87 km S of La Selva Beach, California · 13474 days ago · 3 km deep · 48 km away
  22. 1.76 km N of Day Valley, California · 13474 days ago · 5 km deep · 55 km away
  23. 1.87 km S of La Selva Beach, California · 13474 days ago · 1 km deep · 49 km away
  24. 1.95 km S of Gilroy, California · 13474 days ago · 4 km deep · 26 km away
  25. 2.32 km NE of Lexington Hills, California · 13474 days ago · 5 km deep · 67 km away
  26. 1.54 km NW of Day Valley, California · 13474 days ago · 14 km deep · 57 km away
  27. 2.26 km S of La Selva Beach, California · 13474 days ago · 4 km deep · 48 km away
  28. 1.96 km NE of Corralitos, California · 13474 days ago · 6 km deep · 42 km away
  29. 1.66 km S of La Selva Beach, California · 13474 days ago · 3 km deep · 48 km away
  30. 2.011 km WSW of Saratoga, California · 13474 days ago · 10 km deep · 84 km away
  31. 1.83 km SSW of Saratoga, California · 13474 days ago · 8 km deep · 77 km away
  32. 1.62 km N of Interlaken, California · 13474 days ago · 14 km deep · 39 km away
  33. 3.33 km S of San Juan Bautista, California · 13473 days ago · 7 km deep · 21 km away
  34. 2.88 km N of Bear Creek, California · 13473 days ago · 4 km deep · 98 km away
  35. 1.83 km S of San Juan Bautista, California · 13473 days ago · 5 km deep · 20 km away
  36. 2.96 km NNE of Day Valley, California · 13473 days ago · 5 km deep · 53 km away
  37. 1.56 km NNE of Day Valley, California · 13473 days ago · 5 km deep · 53 km away
  38. 3.27 km NNE of Day Valley, California · 13473 days ago · 5 km deep · 53 km away
  39. 1.67 km SW of Gilroy, California · 13473 days ago · 3 km deep · 31 km away
  40. 1.68 km N of Day Valley, California · 13473 days ago · 2 km deep · 57 km away
  41. 1.75 km NNW of Day Valley, California · 13473 days ago · 13 km deep · 57 km away
  42. 1.93 km SSW of La Selva Beach, California · 13473 days ago · 3 km deep · 51 km away
  43. 1.61 km NE of Corralitos, California · 13473 days ago · 15 km deep · 46 km away
  44. 1.77 km S of La Selva Beach, California · 13473 days ago · 1 km deep · 48 km away
  45. 1.66 km NE of Day Valley, California · 13473 days ago · 9 km deep · 50 km away
  46. 1.64 km SW of Cupertino, California · 13473 days ago · 5 km deep · 83 km away
  47. 1.68 km N of Day Valley, California · 13473 days ago · 3 km deep · 57 km away
  48. 1.66 km WSW of Gilroy, California · 13473 days ago · 3 km deep · 32 km away
  49. 1.9Central California · 13473 days ago · 5 km deep · 22 km away
  50. 2.74 km NNW of Day Valley, California · 13473 days ago · 13 km deep · 56 km away
  51. 2.54 km NNW of Day Valley, California · 13473 days ago · 13 km deep · 56 km away
  52. 2.324 km ENE of Soledad, California · 13473 days ago · 3 km deep · 45 km away
  53. 1.76 km S of La Selva Beach, California · 13473 days ago · 3 km deep · 50 km away
  54. 1.5Northern California · 13473 days ago · 18 km deep · 59 km away
  55. 1.77 km ENE of Scotts Valley, California · 13473 days ago · 15 km deep · 61 km away
  56. 1.65 km ENE of Zayante, California · 13473 days ago · 17 km deep · 66 km away
  57. 1.68 km NNE of Day Valley, California · 13473 days ago · 3 km deep · 54 km away
  58. 1.712 km SW of Davenport, California · 13472 days ago · 8 km deep · 86 km away
  59. 1.63 km ESE of Aromas, California · 13472 days ago · 7 km deep · 26 km away
  60. 1.67 km S of La Selva Beach, California · 13472 days ago · 0 km deep · 49 km away

The first 60 of 196.

Before

  1. 3.04 km ESE of Interlaken, California · 13475 days ago · 12 km deep · 34 km away
  2. 1.57 km S of La Selva Beach, California · 13475 days ago · 0 km deep · 48 km away
  3. 2.53 km N of Interlaken, California · 13476 days ago · 15 km deep · 40 km away
  4. 2.212 km SW of Ridgemark, California · 13476 days ago · 15 km deep · 18 km away
  5. 1.74 km NNW of Aromas, California · 13476 days ago · 10 km deep · 32 km away
  6. 1.67 km S of La Selva Beach, California · 13476 days ago · 1 km deep · 49 km away
  7. 2.07 km S of La Selva Beach, California · 13476 days ago · 1 km deep · 48 km away
  8. 1.923 km ENE of Soledad, California · 13476 days ago · 3 km deep · 45 km away
  9. 1.87 km N of Day Valley, California · 13476 days ago · 3 km deep · 56 km away
  10. 1.920 km SW of Three Rocks, California · 13476 days ago · 14 km deep · 84 km away
  11. 1.724 km ENE of Soledad, California · 13476 days ago · 0 km deep · 39 km away
  12. 2.120 km SSE of Tres Pinos, California · 13476 days ago · 5 km deep · 27 km away
  13. 1.58 km N of Day Valley, California · 13476 days ago · 4 km deep · 57 km away
  14. 1.73 km NE of Amesti, California · 13476 days ago · 14 km deep · 42 km away
  15. 1.622 km NNE of Soledad, California · 13476 days ago · 2 km deep · 30 km away
  16. 2.16 km NE of Day Valley, California · 13477 days ago · 9 km deep · 52 km away
  17. 2.73 km ESE of Aromas, California · 13477 days ago · 6 km deep · 26 km away
  18. 2.54 km ESE of Interlaken, California · 13477 days ago · 13 km deep · 34 km away
  19. 1.64 km ESE of Interlaken, California · 13477 days ago · 10 km deep · 34 km away
  20. 1.910 km N of Boulder Creek, California · 13477 days ago · 9 km deep · 84 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc147211. Read Mon, Oct 5, 2026, 3:13 AM UTC.