California earthquakes

M1.9 earthquake 23km NNW of San Simeon, CA

A magnitude 1.9 earthquake struck 23km NNW of San Simeon, CA on Fri, Aug 27, 2021, 1:32 PM PDT (20:32 UTC), 12 km (8 mi) below the surface.

A larger quake followed: M4.7 18km NW of San Simeon, CA. This one was a foreshock.

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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
2021-08-27 20:32:31 UTC
Depth
12.1 km (7.5 mi), shallow
Epicenter
35.821° N, 121.312° 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 0.5 km horizontally, 0.8 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
201°, poorly surrounded by stations
Stations used
17

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 100 in the 60 days after this one and 46 in the 30 days before it.

After

  1. 2.11km NE of Pinnacles, CA · 1864 days ago · 9 km deep · 81 km away
  2. 1.720km SW of New Idria, CA · 1863 days ago · 10 km deep · 68 km away
  3. 1.77km ENE of Pinnacles, CA · 1863 days ago · 12 km deep · 85 km away · felt by 1
  4. 1.57km NNW of Cholame, CA · 1863 days ago · 4 km deep · 89 km away
  5. 1.813km N of San Simeon, CA · 1863 days ago · 9 km deep · 13 km away
  6. 1.88km NW of Pinnacles, CA · 1862 days ago · 7 km deep · 86 km away · felt by 2
  7. 1.74km N of Pinnacles, CA · 1862 days ago · 6 km deep · 84 km away
  8. 2.017km N of San Simeon, CA · 1862 days ago · 10 km deep · 8 km away
  9. 4.06km NW of Pinnacles, CA · 1861 days ago · 9 km deep · 85 km away · felt by 265 · tsunami flag
  10. 1.711km WSW of Templeton, CA · 1860 days ago · 6 km deep · 55 km away
  11. 2.19km SE of Pinnacles, CA · 1860 days ago · 6 km deep · 76 km away
  12. 1.58km NNW of Pinnacles, CA · 1858 days ago · 7 km deep · 86 km away
  13. 2.311km WSW of Morro Bay, CA · 1857 days ago · 10 km deep · 63 km away · felt by 2
  14. 1.913km SSE of Tres Pinos, CA · 1856 days ago · 6 km deep · 95 km away
  15. 1.722km SSE of Lopez Point, CA · 1855 days ago · 12 km deep · 12 km away
  16. 1.722km SSE of Lopez Point, CA · 1855 days ago · 10 km deep · 13 km away
  17. 2.515km SSE of Tres Pinos, CA · 1852 days ago · 5 km deep · 93 km away · felt by 3
  18. 1.67km NNW of Pinnacles, CA · 1852 days ago · 8 km deep · 86 km away
  19. 2.216km NW of Pinnacles, CA · 1851 days ago · 4 km deep · 92 km away
  20. 1.723km WSW of New Idria, CA · 1850 days ago · 8 km deep · 66 km away
  21. 2.17km NNW of Pinnacles, CA · 1850 days ago · 8 km deep · 86 km away
  22. 2.08km N of Pinnacles, CA · 1850 days ago · 9 km deep · 88 km away
  23. 2.015km NW of Pinnacles, CA · 1849 days ago · 10 km deep · 91 km away · felt by 1
  24. 2.313km NNE of Cambria, CA · 1847 days ago · 7 km deep · 32 km away · felt by 2
  25. 3.815km SSE of New Idria, CA · 1847 days ago · 17 km deep · 84 km away · felt by 29
  26. 1.88km ESE of Pinnacles, CA · 1847 days ago · 3 km deep · 78 km away
  27. 2.35km SSE of Parkfield, CA · 1846 days ago · 5 km deep · 82 km away
  28. 2.823km NW of Parkfield, CA · 1845 days ago · 4 km deep · 68 km away · felt by 2
  29. 2.07km NNW of Pinnacles, CA · 1844 days ago · 7 km deep · 86 km away
  30. 1.813km SE of Pinnacles, CA · 1844 days ago · 0 km deep · 75 km away
  31. 2.122km NE of San Lucas, CA · 1843 days ago · 7 km deep · 64 km away
  32. 2.010km SE of Pinnacles, CA · 1843 days ago · 9 km deep · 77 km away
  33. 1.57km NNW of Pinnacles, CA · 1841 days ago · 8 km deep · 86 km away
  34. 1.52km NNE of Pinnacles, CA · 1841 days ago · 6 km deep · 82 km away
  35. 1.913km SSW of Tres Pinos, CA · 1840 days ago · 10 km deep · 96 km away
  36. 1.98km NW of Pinnacles, CA · 1840 days ago · 8 km deep · 86 km away
  37. 2.017km NW of New Idria, CA · 1838 days ago · 4 km deep · 93 km away
  38. 2.211km NW of Parkfield, CA · 1837 days ago · 10 km deep · 73 km away
  39. 1.611km WSW of Templeton, CA · 1836 days ago · 6 km deep · 55 km away · felt by 1
  40. 1.67km NW of Pinnacles, CA · 1836 days ago · 7 km deep · 85 km away
  41. 1.910km W of Avenal, CA · 1835 days ago · 15 km deep · 99 km away
  42. 2.810km W of Avenal, CA · 1835 days ago · 16 km deep · 99 km away · felt by 4
  43. 3.24km NNW of Cholame, CA · 1833 days ago · 4 km deep · 91 km away · felt by 4
  44. 1.710km NW of Pinnacles, CA · 1832 days ago · 1 km deep · 88 km away
  45. 2.014km SSE of Tres Pinos, CA · 1832 days ago · 5 km deep · 94 km away
  46. 2.86km NW of Pinnacles, CA · 1831 days ago · 8 km deep · 85 km away · felt by 2
  47. 2.07km NNW of Pinnacles, CA · 1831 days ago · 8 km deep · 86 km away
  48. 1.54km NNW of Pinnacles, CA · 1831 days ago · 9 km deep · 84 km away
  49. 1.99km NNE of New Idria, CA · 1830 days ago · 9 km deep · 96 km away
  50. 1.814km SSE of Tres Pinos, CA · 1829 days ago · 2 km deep · 94 km away
  51. 2.014km SSE of Tres Pinos, CA · 1829 days ago · 4 km deep · 94 km away
  52. 1.516km SSE of Tres Pinos, CA · 1828 days ago · 5 km deep · 92 km away · felt by 1
  53. 2.27km SE of Pinnacles, CA · 1828 days ago · 5 km deep · 78 km away · felt by 1
  54. 1.66km NNW of Cholame, CA · 1827 days ago · 8 km deep · 89 km away
  55. 3.714km WNW of Pinnacles, CA · 1826 days ago · 6 km deep · 85 km away · felt by 531
  56. 1.517km SSE of Tres Pinos, CA · 1826 days ago · 1 km deep · 92 km away
  57. 2.07km ESE of Pinnacles, CA · 1826 days ago · 6 km deep · 78 km away · felt by 1
  58. 2.46km SE of Pinnacles, CA · 1826 days ago · 3 km deep · 76 km away · felt by 7
  59. 1.814km WNW of Pinnacles, CA · 1826 days ago · 7 km deep · 86 km away
  60. 1.914km WNW of Pinnacles, CA · 1826 days ago · 7 km deep · 86 km away · felt by 1

The first 60 of 100.

Before

  1. 2.012km NW of Pinnacles, CA · 1865 days ago · 5 km deep · 89 km away
  2. 1.825km NW of Parkfield, CA · 1865 days ago · 5 km deep · 68 km away
  3. 1.923km NW of Parkfield, CA · 1866 days ago · 6 km deep · 66 km away · felt by 1
  4. 1.827km NW of San Simeon, CA · 1867 days ago · 10 km deep · 6 km away
  5. 1.722km NW of San Simeon, CA · 1867 days ago · 4 km deep · 3 km away
  6. 1.931km WNW of San Simeon, CA · 1868 days ago · 6 km deep · 23 km away
  7. 1.619km NNW of Coalinga, CA · 1869 days ago · 8 km deep · 92 km away
  8. 1.65km NW of Parkfield, CA · 1869 days ago · 5 km deep · 76 km away
  9. 1.96km ESE of Pinnacles, CA · 1870 days ago · 6 km deep · 78 km away
  10. 2.03km ENE of Lopez Point, CA · 1871 days ago · 9 km deep · 30 km away
  11. 1.82km ENE of Cayucos, CA · 1873 days ago · 0 km deep · 58 km away
  12. 1.97km NNE of Greenfield, CA · 1873 days ago · 4 km deep · 63 km away · felt by 1
  13. 2.419km NNW of San Simeon, CA · 1874 days ago · 8 km deep · 5 km away
  14. 2.410km NW of Pinnacles, CA · 1875 days ago · 3 km deep · 88 km away · felt by 2
  15. 2.62km SSE of Parkfield, CA · 1876 days ago · 6 km deep · 80 km away · felt by 3
  16. 2.113km NW of Parkfield, CA · 1876 days ago · 10 km deep · 72 km away
  17. 2.04km ESE of Pinnacles, CA · 1877 days ago · 11 km deep · 80 km away · felt by 1
  18. 1.69km ENE of Pinnacles, CA · 1878 days ago · 4 km deep · 86 km away
  19. 2.710km NNW of Pinnacles, CA · 1878 days ago · 6 km deep · 90 km away · felt by 5
  20. 2.210km NNW of Pinnacles, CA · 1878 days ago · 6 km deep · 90 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73616616. Read Mon, Oct 5, 2026, 9:18 AM UTC.