California earthquakes

M1.8 earthquake 16 km E of Seven Trees, California

A magnitude 1.8 earthquake struck 16 km E of Seven Trees, California on Sat, Jul 4, 1981, 12:48 AM PDT (07:48 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M4.2 2 km ESE of Tres Pinos, California. This one was a foreshock.

Seven Trees 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
1.8 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1981-07-04 07:48:01 UTC
Depth
6.6 km (4.1 mi), shallow
Epicenter
37.290° N, 121.658° 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
±0.16
Depth from
From location
Station coverage gap
53°
Stations used
55

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 141 in the 60 days after this one and 62 in the 30 days before it.

After

  1. 1.731 km NE of Soledad, California · 16526 days ago · 8 km deep · 95 km away
  2. 1.64 km NW of Diablo Grande, California · 16525 days ago · 19 km deep · 34 km away
  3. 2.010 km ESE of Gilroy, California · 16525 days ago · 4 km deep · 40 km away
  4. 2.48 km SSW of Tres Pinos, California · 16525 days ago · 3 km deep · 69 km away
  5. 2.12 km WSW of San Juan Bautista, California · 16525 days ago · 7 km deep · 51 km away
  6. 1.79 km NNE of East Foothills, California · 16524 days ago · 5 km deep · 22 km away
  7. 1.69 km NE of Gilroy, California · 16524 days ago · 9 km deep · 28 km away
  8. 1.822 km NE of Soledad, California · 16524 days ago · 3 km deep · 96 km away
  9. 2.511 km N of Livermore, California · 16524 days ago · 12 km deep · 56 km away
  10. 1.62 km ENE of Berkeley, California · 16524 days ago · 8 km deep · 84 km away
  11. 1.823 km NE of Soledad, California · 16523 days ago · 4 km deep · 94 km away
  12. 1.69 km NE of San Martin, California · 16523 days ago · 7 km deep · 18 km away
  13. 1.526 km SE of Tres Pinos, California · 16523 days ago · 7 km deep · 89 km away
  14. 2.422 km NE of Soledad, California · 16523 days ago · 2 km deep · 96 km away
  15. 1.621 km NE of Soledad, California · 16523 days ago · 8 km deep · 95 km away
  16. 2.47 km W of Mountain House, California · 16522 days ago · 7 km deep · 54 km away
  17. 1.8Northern California · 16521 days ago · 7 km deep · 31 km away
  18. 1.922 km SE of Livermore, California · 16521 days ago · 7 km deep · 31 km away
  19. 1.612 km ENE of East Foothills, California · 16521 days ago · 8 km deep · 13 km away
  20. 2.122 km NE of Soledad, California · 16521 days ago · 2 km deep · 96 km away
  21. 2.83 km NNW of Hollister, California · 16518 days ago · 8 km deep · 50 km away
  22. 1.72 km NE of Union City, California · 16518 days ago · 6 km deep · 46 km away
  23. 2.65 km S of Gilroy, California · 16517 days ago · 4 km deep · 38 km away
  24. 2.76 km ESE of Prunedale, California · 16517 days ago · 9 km deep · 59 km away
  25. 1.67 km ESE of Prunedale, California · 16517 days ago · 8 km deep · 59 km away
  26. 2.116 km NE of East Foothills, California · 16516 days ago · 6 km deep · 22 km away
  27. 1.97 km NE of San Juan Bautista, California · 16516 days ago · 8 km deep · 47 km away
  28. 2.524 km NE of Soledad, California · 16516 days ago · 10 km deep · 95 km away
  29. 2.314 km E of Seven Trees, California · 16515 days ago · 3 km deep · 1 km away
  30. 3.020 km SSE of Tres Pinos, California · 16515 days ago · 6 km deep · 84 km away
  31. 2.120 km SSE of Tres Pinos, California · 16515 days ago · 6 km deep · 84 km away
  32. 1.711 km ESE of East Foothills, California · 16515 days ago · 7 km deep · 6 km away
  33. 1.69 km NE of San Martin, California · 16514 days ago · 7 km deep · 20 km away
  34. 1.84 km N of Hollister, California · 16514 days ago · 8 km deep · 50 km away
  35. 2.111 km SW of Brentwood, California · 16514 days ago · 15 km deep · 64 km away
  36. 2.1Central California · 16513 days ago · 6 km deep · 85 km away
  37. 2.12 km SSW of Broadmoor, California · 16512 days ago · 4 km deep · 85 km away
  38. 3.02 km SSW of San Juan Bautista, California · 16512 days ago · 5 km deep · 53 km away
  39. 2.52 km S of San Juan Bautista, California · 16512 days ago · 4 km deep · 53 km away
  40. 2.02 km NW of Broadmoor, California · 16511 days ago · 3 km deep · 87 km away
  41. 1.619 km SSE of Livermore, California · 16511 days ago · 2 km deep · 27 km away
  42. 1.68 km NE of Gilroy, California · 16510 days ago · 8 km deep · 29 km away
  43. 2.27 km SSE of San Juan Bautista, California · 16510 days ago · 8 km deep · 58 km away
  44. 1.69 km NE of San Martin, California · 16510 days ago · 9 km deep · 20 km away
  45. 1.921 km NE of East Foothills, California · 16509 days ago · 3 km deep · 25 km away
  46. 1.89 km NNW of Hollister, California · 16508 days ago · 4 km deep · 44 km away
  47. 1.64 km NNE of East Foothills, California · 16507 days ago · 2 km deep · 19 km away
  48. 1.615 km E of Seven Trees, California · 16506 days ago · 6 km deep · 1 km away
  49. 1.54 km ENE of La Honda, California · 16506 days ago · 10 km deep · 51 km away
  50. 1.99 km NE of Gilroy, California · 16504 days ago · 9 km deep · 28 km away
  51. 3.031 km ENE of Soledad, California · 16504 days ago · 9 km deep · 97 km away
  52. 1.730 km ENE of Soledad, California · 16504 days ago · 7 km deep · 98 km away
  53. 1.58 km SSW of Ridgemark, California · 16504 days ago · 6 km deep · 65 km away
  54. 2.3Northern California · 16503 days ago · 15 km deep · 98 km away
  55. 2.04 km SE of Alum Rock, California · 16502 days ago · 3 km deep · 13 km away
  56. 1.63 km WNW of Dublin, California · 16502 days ago · 6 km deep · 55 km away
  57. 1.716 km S of Davenport, California · 16502 days ago · 4 km deep · 67 km away
  58. 1.77 km ESE of East Foothills, California · 16502 days ago · 1 km deep · 10 km away
  59. 1.615 km N of Morgan Hill, California · 16502 days ago · 2 km deep · 2 km away
  60. 1.811 km S of Tres Pinos, California · 16501 days ago · 4 km deep · 74 km away

The first 60 of 141.

Before

  1. 1.714 km S of Carmel-by-the-Sea, California · 16526 days ago · 19 km deep · 100 km away
  2. 1.611 km SE of La Honda, California · 16526 days ago · 6 km deep · 46 km away
  3. 1.716 km E of Seven Trees, California · 16527 days ago · 7 km deep · 0 km away
  4. 2.722 km NE of Soledad, California · 16528 days ago · 4 km deep · 89 km away
  5. 1.621 km NE of Soledad, California · 16528 days ago · 7 km deep · 89 km away
  6. 2.522 km NNE of Soledad, California · 16529 days ago · 6 km deep · 86 km away
  7. 1.98 km SSW of La Selva Beach, California · 16530 days ago · 7 km deep · 52 km away
  8. 2.02 km WSW of San Juan Bautista, California · 16531 days ago · 7 km deep · 51 km away
  9. 1.528 km NE of Soledad, California · 16531 days ago · 11 km deep · 95 km away
  10. 2.93 km NE of East Foothills, California · 16531 days ago · 2 km deep · 17 km away
  11. 2.22 km N of Danville, California · 16532 days ago · 8 km deep · 69 km away
  12. 2.23 km NE of Alamo, California · 16533 days ago · 8 km deep · 71 km away
  13. 3.122 km NNE of Soledad, California · 16534 days ago · 7 km deep · 88 km away
  14. 2.423 km ENE of Soledad, California · 16535 days ago · 7 km deep · 97 km away
  15. 2.023 km ENE of Soledad, California · 16535 days ago · 7 km deep · 97 km away
  16. 2.122 km NE of Soledad, California · 16535 days ago · 2 km deep · 96 km away
  17. 2.526 km NE of Soledad, California · 16536 days ago · 8 km deep · 94 km away
  18. 2.59 km ESE of East Foothills, California · 16537 days ago · 7 km deep · 8 km away
  19. 1.612 km NNE of Morgan Hill, California · 16537 days ago · 4 km deep · 6 km away
  20. 1.69 km ESE of East Foothills, California · 16537 days ago · 0 km deep · 9 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1065139. Read Thu, Oct 1, 2026, 9:52 PM UTC.