California earthquakes

M2.3 earthquake Central California

A magnitude 2.3 earthquake struck in Central California on Sun, Dec 30, 1979, 2:21 PM PST (22:21 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M5.8 The 1980 Livermore, California Earthquake. This one was a foreshock.

Gilroy 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
2.3 (md), micro
Local time
UTC
1979-12-30 22:21:24 UTC
Depth
5.3 km (3.3 mi), shallow
Epicenter
36.991° N, 121.652° 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
±0.16
Depth from
From location
Station coverage gap
61°
Stations used
45

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 192 in the 60 days after this one and 97 in the 30 days before it.

After

  1. 2.126 km ESE of Big Sur, California · 17076 days ago · 5 km deep · 93 km away
  2. 1.88 km ENE of Gilroy, California · 17076 days ago · 5 km deep · 16 km away
  3. 1.924 km NE of Greenfield, California · 17075 days ago · 6 km deep · 80 km away
  4. 1.924 km NE of Greenfield, California · 17075 days ago · 6 km deep · 80 km away
  5. 1.67 km ENE of Gilroy, California · 17074 days ago · 7 km deep · 15 km away
  6. 2.422 km WNW of Diablo Grande, California · 17074 days ago · 6 km deep · 52 km away
  7. 1.924 km ENE of Soledad, California · 17074 days ago · 4 km deep · 75 km away
  8. 1.69 km NE of San Juan Bautista, California · 17074 days ago · 5 km deep · 18 km away
  9. 2.29 km ENE of Gilroy, California · 17073 days ago · 9 km deep · 17 km away
  10. 2.122 km NNE of Soledad, California · 17073 days ago · 6 km deep · 60 km away
  11. 1.623 km ENE of Soledad, California · 17073 days ago · 3 km deep · 74 km away
  12. 2.122 km ENE of Soledad, California · 17072 days ago · 2 km deep · 70 km away
  13. 2.421 km NE of Soledad, California · 17072 days ago · 5 km deep · 63 km away
  14. 2.322 km E of East Foothills, California · 17072 days ago · 6 km deep · 45 km away
  15. 1.54 km SSE of Sunol, California · 17071 days ago · 8 km deep · 66 km away
  16. 2.621 km NE of Soledad, California · 17070 days ago · 5 km deep · 63 km away
  17. 2.222 km NE of Soledad, California · 17070 days ago · 2 km deep · 67 km away
  18. 1.59 km E of San Martin, California · 17070 days ago · 9 km deep · 17 km away
  19. 1.69 km NNW of Hollister, California · 17070 days ago · 7 km deep · 21 km away
  20. 1.622 km NE of Soledad, California · 17070 days ago · 2 km deep · 68 km away
  21. 1.522 km NE of Soledad, California · 17069 days ago · 2 km deep · 68 km away
  22. 1.8Northern California · 17069 days ago · 9 km deep · 17 km away
  23. 1.822 km NE of Soledad, California · 17068 days ago · 8 km deep · 68 km away
  24. 1.722 km NE of Soledad, California · 17068 days ago · 8 km deep · 68 km away
  25. 1.712 km ESE of Gilroy, California · 17068 days ago · 5 km deep · 20 km away
  26. 1.68 km E of Gilroy, California · 17067 days ago · 4 km deep · 16 km away
  27. 1.53 km NNW of Hollister, California · 17067 days ago · 6 km deep · 24 km away
  28. 2.622 km NNE of Soledad, California · 17067 days ago · 7 km deep · 60 km away
  29. 2.58 km SW of Brentwood, California · 17067 days ago · 6 km deep · 99 km away
  30. 1.719 km ESE of East Foothills, California · 17067 days ago · 6 km deep · 36 km away
  31. 1.814 km E of Seven Trees, California · 17066 days ago · 1 km deep · 34 km away
  32. 1.921 km NE of Soledad, California · 17066 days ago · 6 km deep · 62 km away
  33. 2.28 km E of San Martin, California · 17065 days ago · 7 km deep · 17 km away
  34. 2.19 km ENE of Gilroy, California · 17065 days ago · 8 km deep · 17 km away
  35. 2.517 km SSE of Tres Pinos, California · 17063 days ago · 4 km deep · 52 km away
  36. 1.623 km SE of Livermore, California · 17063 days ago · 7 km deep · 61 km away
  37. 2.06 km WSW of Gilroy, California · 17063 days ago · 4 km deep · 1 km away
  38. 1.74 km WSW of Keyes, California · 17062 days ago · 5 km deep · 86 km away
  39. 2.216 km E of Seven Trees, California · 17061 days ago · 7 km deep · 33 km away
  40. 1.923 km NE of King City, California · 17061 days ago · 8 km deep · 93 km away
  41. 1.917 km SSE of Tres Pinos, California · 17061 days ago · 5 km deep · 53 km away
  42. 1.79 km NNW of Hollister, California · 17060 days ago · 6 km deep · 18 km away
  43. 2.0Central California · 17059 days ago · 5 km deep · 95 km away
  44. 2.610 km S of Tres Pinos, CA · 17059 days ago · 2 km deep · 43 km away
  45. 1.6Central California · 17059 days ago · 7 km deep · 81 km away
  46. 2.211 km ESE of Big Sur, California · 17059 days ago · 15 km deep · 86 km away
  47. 3.64 km ENE of Day Valley, California · 17059 days ago · 16 km deep · 15 km away
  48. 2.110 km NE of Gilroy, California · 17058 days ago · 9 km deep · 17 km away
  49. 2.19 km E of San Martin, California · 17058 days ago · 9 km deep · 17 km away
  50. 1.67 km SSE of Gilroy, California · 17058 days ago · 5 km deep · 12 km away
  51. 2.817 km ESE of East Foothills, California · 17058 days ago · 8 km deep · 38 km away
  52. 2.324 km NE of Greenfield, California · 17058 days ago · 0 km deep · 81 km away
  53. 1.79 km NE of Milpitas, California · 17057 days ago · 7 km deep · 57 km away
  54. 2.024 km NE of Greenfield, California · 17057 days ago · 1 km deep · 82 km away
  55. 1.68 km NE of San Martin, California · 17057 days ago · 6 km deep · 19 km away
  56. 2.812 km ESE of Alum Rock, California · 17057 days ago · 8 km deep · 36 km away
  57. 2.110 km S of Tres Pinos, California · 17057 days ago · 6 km deep · 43 km away
  58. 1.826 km NE of Greenfield, California · 17056 days ago · 5 km deep · 81 km away
  59. 1.616 km SSE of Tres Pinos, California · 17055 days ago · 3 km deep · 52 km away
  60. 1.69 km NE of Gilroy, California · 17055 days ago · 5 km deep · 16 km away

The first 60 of 192.

Before

  1. 1.924 km NE of Soledad, California · 17076 days ago · 9 km deep · 67 km away
  2. 2.224 km NE of Greenfield, California · 17076 days ago · 6 km deep · 80 km away
  3. 1.611 km S of Tres Pinos, California · 17076 days ago · 8 km deep · 44 km away
  4. 2.024 km NE of Greenfield, California · 17076 days ago · 4 km deep · 81 km away
  5. 2.424 km NE of Greenfield, California · 17076 days ago · 5 km deep · 80 km away
  6. 2.69 km ENE of Gilroy, California · 17076 days ago · 7 km deep · 17 km away
  7. 2.49 km S of Tres Pinos, California · 17076 days ago · 2 km deep · 43 km away
  8. 1.79 km S of Tres Pinos, California · 17076 days ago · 2 km deep · 42 km away
  9. 1.724 km NE of Greenfield, California · 17076 days ago · 6 km deep · 80 km away
  10. 1.98 km ENE of San Martin, California · 17077 days ago · 7 km deep · 18 km away
  11. 2.44 km ESE of Lexington Hills, California · 17077 days ago · 11 km deep · 30 km away
  12. 2.924 km NE of Greenfield, California · 17077 days ago · 7 km deep · 80 km away
  13. 1.96 km NE of East Foothills, California · 17077 days ago · 8 km deep · 49 km away
  14. 1.623 km NE of King City, California · 17078 days ago · 4 km deep · 97 km away
  15. 1.59 km NE of Gilroy, California · 17078 days ago · 9 km deep · 17 km away
  16. 1.817 km ENE of East Foothills, California · 17079 days ago · 6 km deep · 48 km away
  17. 2.09 km NE of Gilroy, California · 17079 days ago · 9 km deep · 17 km away
  18. 2.49 km ENE of Gilroy, California · 17080 days ago · 9 km deep · 17 km away
  19. 1.83 km ESE of Aromas, California · 17081 days ago · 7 km deep · 13 km away
  20. 2.211 km ESE of East Foothills, California · 17081 days ago · 7 km deep · 39 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1049637. Read Wed, Sep 30, 2026, 6:40 PM UTC.