California earthquakes

M2.3 earthquake 9 km ESE of East Foothills, California

A magnitude 2.3 earthquake struck 9 km ESE of East Foothills, California on Tue, Aug 2, 1983, 1:02 AM PDT (08:02 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.5 8 km ENE of Gilroy, California. This one was a foreshock.

East Foothills forecastMore in California

Map

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

Open the live map with earthquakes

The earthquake

Magnitude
2.3 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1983-08-02 08:02:55 UTC
Depth
3.0 km (1.9 mi), shallow
Epicenter
37.340° N, 121.728° 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, 0.4 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
35°
Stations used
54

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 122 in the 60 days after this one and 45 in the 30 days before it.

After

  1. 2.06 km SE of Tres Pinos, California · 15766 days ago · 9 km deep · 77 km away
  2. 1.99 km ESE of East Foothills, California · 15766 days ago · 3 km deep · 0 km away
  3. 1.722 km NE of Soledad, California · 15765 days ago · 3 km deep · 99 km away
  4. 2.02 km E of North Gate, California · 15764 days ago · 11 km deep · 66 km away
  5. 2.015 km SSE of Tres Pinos, California · 15764 days ago · 5 km deep · 86 km away
  6. 1.615 km SSE of Tres Pinos, California · 15764 days ago · 5 km deep · 86 km away
  7. 2.39 km ESE of East Foothills, California · 15763 days ago · 7 km deep · 2 km away
  8. 1.69 km ESE of East Foothills, California · 15763 days ago · 7 km deep · 2 km away
  9. 1.58 km E of East Foothills, California · 15763 days ago · 7 km deep · 3 km away
  10. 1.819 km WSW of South Dos Palos, California · 15762 days ago · 6 km deep · 95 km away
  11. 1.71 km E of Tres Pinos, California · 15762 days ago · 8 km deep · 72 km away
  12. 1.514 km SSE of Tres Pinos, California · 15762 days ago · 4 km deep · 85 km away
  13. 2.01 km E of Alamo, California · 15762 days ago · 9 km deep · 62 km away
  14. 2.02 km E of Pacifica, California · 15760 days ago · 8 km deep · 71 km away
  15. 1.917 km SSE of Tres Pinos, California · 15760 days ago · 6 km deep · 89 km away
  16. 1.63 km WSW of San Bruno, California · 15760 days ago · 8 km deep · 71 km away
  17. 2.22 km SW of Pittsburg, California · 15760 days ago · 15 km deep · 76 km away
  18. 1.50 km WSW of Pittsburg, California · 15760 days ago · 17 km deep · 78 km away
  19. 1.95 km SW of Mountain House, California · 15759 days ago · 6 km deep · 47 km away
  20. 2.15 km SW of Gilroy, California · 15759 days ago · 4 km deep · 42 km away
  21. 2.117 km SSE of Tres Pinos, California · 15758 days ago · 6 km deep · 89 km away
  22. 1.6Central California · 15758 days ago · 3 km deep · 43 km away
  23. 1.515 km SE of Livermore, California · 15756 days ago · 4 km deep · 26 km away
  24. 1.622 km NE of Soledad, California · 15756 days ago · 9 km deep · 100 km away
  25. 2.410 km ENE of Blackhawk, California · 15755 days ago · 9 km deep · 58 km away
  26. 2.110 km ENE of Blackhawk, California · 15755 days ago · 10 km deep · 58 km away
  27. 2.35 km NNE of Ridgemark, California · 15754 days ago · 6 km deep · 64 km away
  28. 2.321 km NE of Soledad, California · 15754 days ago · 4 km deep · 97 km away
  29. 2.17 km E of East Foothills, California · 15753 days ago · 9 km deep · 4 km away
  30. 1.69 km ENE of San Martin, California · 15753 days ago · 9 km deep · 30 km away
  31. 1.612 km ESE of Gilroy, California · 15752 days ago · 7 km deep · 49 km away
  32. 2.01 km E of Pacheco, California · 15751 days ago · 12 km deep · 77 km away
  33. 3.25 km NNE of Ridgemark, California · 15751 days ago · 6 km deep · 64 km away
  34. 2.65 km NNE of Ridgemark, California · 15751 days ago · 6 km deep · 64 km away
  35. 1.65 km NNE of Ridgemark, California · 15751 days ago · 4 km deep · 64 km away
  36. 2.25 km NNE of Ridgemark, California · 15751 days ago · 5 km deep · 64 km away
  37. 1.717 km SSE of Tres Pinos, California · 15750 days ago · 5 km deep · 88 km away
  38. 2.414 km SSE of Tres Pinos, California · 15750 days ago · 10 km deep · 84 km away
  39. 3.314 km SSE of Tres Pinos, California · 15750 days ago · 10 km deep · 85 km away
  40. 1.611 km SSE of Livermore, California · 15749 days ago · 6 km deep · 27 km away
  41. 2.34 km ENE of La Honda, California · 15749 days ago · 0 km deep · 45 km away
  42. 1.512 km S of Tres Pinos, California · 15749 days ago · 2 km deep · 82 km away
  43. 1.85 km SSW of Tres Pinos, California · 15749 days ago · 6 km deep · 74 km away
  44. 1.912 km N of Livermore, California · 15749 days ago · 11 km deep · 51 km away
  45. 3.12 km ESE of Aromas, California · 15747 days ago · 7 km deep · 52 km away
  46. 2.12 km E of Aromas, California · 15747 days ago · 6 km deep · 51 km away
  47. 1.82 km E of Aromas, California · 15747 days ago · 7 km deep · 52 km away
  48. 1.82 km ESE of Aromas, California · 15747 days ago · 7 km deep · 52 km away
  49. 3.24 km S of San Juan Bautista, California · 15747 days ago · 7 km deep · 62 km away
  50. 1.612 km ESE of East Foothills, California · 15746 days ago · 4 km deep · 4 km away
  51. 2.92 km ESE of Aromas, California · 15746 days ago · 6 km deep · 52 km away
  52. 1.625 km WSW of Volta, California · 15745 days ago · 4 km deep · 56 km away
  53. 2.33 km SSE of San Juan Bautista, California · 15745 days ago · 4 km deep · 61 km away
  54. 2.415 km SSE of Tres Pinos, California · 15745 days ago · 3 km deep · 86 km away
  55. 1.67 km E of East Foothills, CA · 15744 days ago · 7 km deep · 6 km away
  56. 1.625 km NE of Soledad, California · 15744 days ago · 2 km deep · 98 km away
  57. 1.615 km ESE of Tres Pinos, California · 15743 days ago · 9 km deep · 85 km away
  58. 2.118 km ESE of Livermore, California · 15743 days ago · 4 km deep · 30 km away
  59. 2.15 km SSW of Ridgemark, California · 15742 days ago · 9 km deep · 71 km away
  60. 2.63 km SSE of San Juan Bautista, California · 15741 days ago · 4 km deep · 61 km away

The first 60 of 122.

Before

  1. 1.91 km W of Broadmoor, California · 15767 days ago · 10 km deep · 78 km away
  2. 2.622 km ENE of Tres Pinos, California · 15767 days ago · 0 km deep · 79 km away
  3. 2.515 km SE of Livermore, California · 15768 days ago · 2 km deep · 26 km away
  4. 2.018 km SSE of Tres Pinos, California · 15769 days ago · 5 km deep · 90 km away
  5. 3.18 km SE of San Juan Bautista, California · 15769 days ago · 5 km deep · 65 km away
  6. 2.65 km NE of Tres Pinos, California · 15769 days ago · 4 km deep · 69 km away
  7. 2.511 km S of Tres Pinos, California · 15771 days ago · 3 km deep · 81 km away
  8. 2.59 km NE of Gilroy, California · 15771 days ago · 7 km deep · 36 km away
  9. 2.916 km NE of East Foothills, California · 15771 days ago · 6 km deep · 15 km away
  10. 2.811 km SW of Muir Beach, California · 15771 days ago · 6 km deep · 95 km away
  11. 1.69 km ESE of East Foothills, California · 15771 days ago · 8 km deep · 2 km away
  12. 1.613 km SE of Sunol, California · 15771 days ago · 4 km deep · 20 km away
  13. 1.99 km NE of San Martin, California · 15772 days ago · 7 km deep · 28 km away
  14. 2.03 km N of East Foothills, California · 15772 days ago · 0 km deep · 12 km away
  15. 1.817 km ENE of East Foothills, California · 15773 days ago · 5 km deep · 13 km away
  16. 2.514 km NE of Morgan Hill, California · 15773 days ago · 7 km deep · 22 km away
  17. 1.69 km NW of Hollister, California · 15774 days ago · 5 km deep · 52 km away
  18. 2.12 km E of San Leandro, California · 15774 days ago · 2 km deep · 55 km away
  19. 1.727 km ESE of Tres Pinos, California · 15777 days ago · 0 km deep · 92 km away
  20. 1.610 km WSW of Ridgemark, California · 15778 days ago · 6 km deep · 68 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1099708. Read Thu, Oct 1, 2026, 9:21 PM UTC.