California earthquakes

M1.7 earthquake 12km SSW of San Lucas, CA

A magnitude 1.7 earthquake struck 12km SSW of San Lucas, CA on Sun, Dec 19, 2021, 10:27 AM PST (18:27 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.3 8km NE 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
1.7 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2021-12-19 18:27:11 UTC
Depth
6.4 km (4.0 mi), shallow
Epicenter
36.029° N, 121.075° 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 0.3 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.19
Depth from
From location
Station coverage gap
76°
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: 107 in the 60 days after this one and 60 in the 30 days before it.

After

  1. 2.24km WSW of Paso Robles, CA · 1748 days ago · 8 km deep · 56 km away · felt by 10
  2. 2.114km N of Coalinga, CA · 1747 days ago · 9 km deep · 67 km away
  3. 1.718km NW of San Simeon, CA · 1747 days ago · 7 km deep · 35 km away
  4. 1.612km NW of Parkfield, CA · 1747 days ago · 7 km deep · 50 km away
  5. 1.91km E of Hollister, CA · 1747 days ago · 6 km deep · 95 km away · felt by 3
  6. 1.718km NNW of San Simeon, CA · 1746 days ago · 4 km deep · 34 km away
  7. 2.511km N of Avenal, CA · 1745 days ago · 9 km deep · 84 km away
  8. 1.79km WSW of Atascadero, CA · 1745 days ago · 2 km deep · 69 km away
  9. 1.93km NNW of Pinnacles, CA · 1744 days ago · 7 km deep · 59 km away
  10. 2.211km SE of Pinnacles, CA · 1743 days ago · 3 km deep · 49 km away
  11. 1.67km NNW of Pinnacles, CA · 1743 days ago · 6 km deep · 63 km away
  12. 1.912km N of Pinnacles, CA · 1743 days ago · 8 km deep · 69 km away
  13. 3.28km NNW of Pinnacles, CA · 1743 days ago · 6 km deep · 64 km away · felt by 23
  14. 2.07km NNW of Pinnacles, CA · 1743 days ago · 6 km deep · 63 km away · felt by 1
  15. 2.217km ENE of New Idria, CA · 1742 days ago · 15 km deep · 70 km away
  16. 1.810km ESE of Lopez Point, CA · 1742 days ago · 12 km deep · 35 km away
  17. 2.016km N of New Idria, CA · 1741 days ago · 12 km deep · 70 km away
  18. 2.74km NW of Pinnacles, CA · 1741 days ago · 2 km deep · 60 km away · felt by 4
  19. 2.623km WNW of Lopez Point, CA · 1741 days ago · 13 km deep · 66 km away · felt by 5
  20. 1.728km SSW of South Dos Palos, CA · 1740 days ago · 2 km deep · 84 km away
  21. 1.93km N of Pinnacles, CA · 1740 days ago · 8 km deep · 59 km away · felt by 1
  22. 2.19km SSW of Tres Pinos, CA · 1737 days ago · 2 km deep · 82 km away
  23. 2.013km NNE of San Simeon, CA · 1737 days ago · 7 km deep · 31 km away · felt by 2
  24. 3.31km W of Parkfield, CA · 1737 days ago · 6 km deep · 59 km away · felt by 34
  25. 2.212km W of Templeton, CA · 1736 days ago · 7 km deep · 58 km away
  26. 2.122km ENE of San Lucas, CA · 1736 days ago · 6 km deep · 33 km away
  27. 2.012km SE of Pinnacles, CA · 1736 days ago · 0 km deep · 49 km away
  28. 2.513km NNW of San Simeon, CA · 1735 days ago · 7 km deep · 34 km away · felt by 1
  29. 1.619km NW of San Simeon, CA · 1734 days ago · 4 km deep · 37 km away
  30. 2.26km W of Templeton, CA · 1733 days ago · 5 km deep · 60 km away · felt by 2
  31. 2.410km SE of Pinnacles, CA · 1731 days ago · 9 km deep · 50 km away · felt by 3
  32. 2.110km SE of Pinnacles, CA · 1731 days ago · 9 km deep · 50 km away
  33. 1.74km W of Pinnacles, CA · 1731 days ago · 1 km deep · 57 km away
  34. 1.710km SE of Pinnacles, CA · 1731 days ago · 9 km deep · 50 km away
  35. 2.121km SE of Pinnacles, CA · 1730 days ago · 9 km deep · 42 km away
  36. 2.55km NNW of Pinnacles, CA · 1729 days ago · 3 km deep · 61 km away · felt by 1
  37. 2.516km N of Coalinga, CA · 1729 days ago · 13 km deep · 71 km away · felt by 1
  38. 1.72km NE of Pinnacles, CA · 1727 days ago · 9 km deep · 57 km away
  39. 2.422km NE of San Lucas, CA · 1725 days ago · 7 km deep · 33 km away · felt by 1
  40. 1.62km NNE of Pinnacles, CA · 1725 days ago · 9 km deep · 58 km away
  41. 2.17km NNW of Pinnacles, CA · 1725 days ago · 4 km deep · 63 km away · felt by 1
  42. 2.112km S of Tres Pinos, CA · 1723 days ago · 5 km deep · 77 km away
  43. 1.93km NNW of Pinnacles, CA · 1721 days ago · 8 km deep · 59 km away
  44. 2.02km SSE of Tres Pinos, CA · 1721 days ago · 7 km deep · 85 km away · felt by 1
  45. 1.924km E of San Ardo, CA · 1720 days ago · 3 km deep · 39 km away
  46. 2.38km W of Templeton, CA · 1720 days ago · 5 km deep · 58 km away · felt by 9
  47. 2.217km SE of Pinnacles, CA · 1719 days ago · 7 km deep · 45 km away
  48. 1.65km SSW of Tres Pinos, CA · 1719 days ago · 7 km deep · 84 km away · felt by 1
  49. 1.64km NNW of Pinnacles, CA · 1719 days ago · 7 km deep · 61 km away
  50. 1.713km S of Tres Pinos, CA · 1718 days ago · 4 km deep · 74 km away
  51. 1.67km SW of Ridgemark, CA · 1716 days ago · 10 km deep · 88 km away
  52. 1.55km NE of Pinnacles, CA · 1715 days ago · 9 km deep · 60 km away
  53. 2.212km NNE of Cayucos, CA · 1714 days ago · 6 km deep · 58 km away · felt by 3
  54. 3.114km SSE of Tres Pinos, CA · 1714 days ago · 5 km deep · 73 km away · felt by 10
  55. 2.714km SSE of Tres Pinos, CA · 1714 days ago · 5 km deep · 73 km away · felt by 2
  56. 1.914km SSE of Tres Pinos, CA · 1714 days ago · 4 km deep · 73 km away
  57. 2.011km NW of Parkfield, CA · 1714 days ago · 10 km deep · 50 km away
  58. 1.67km ESE of Pinnacles, CA · 1712 days ago · 7 km deep · 53 km away
  59. 2.310km ENE of Coalinga, CA · 1712 days ago · 6 km deep · 75 km away
  60. 1.811km ENE of Coalinga, CA · 1712 days ago · 8 km deep · 77 km away

The first 60 of 107.

Before

  1. 1.77km NW of Pinnacles, CA · 1750 days ago · 7 km deep · 62 km away
  2. 1.521km NNE of San Simeon, CA · 1752 days ago · 4 km deep · 24 km away
  3. 1.63km SSE of San Juan Bautista, CA · 1752 days ago · 6 km deep · 96 km away
  4. 1.714km SSW of Avenal, CA · 1753 days ago · 21 km deep · 84 km away
  5. 1.914km SSW of Avenal, CA · 1753 days ago · 21 km deep · 83 km away
  6. 2.05km SSW of Tres Pinos, CA · 1754 days ago · 8 km deep · 84 km away
  7. 2.42km E of Pinnacles, CA · 1754 days ago · 4 km deep · 56 km away · felt by 2
  8. 1.614km SE of Tres Pinos, CA · 1754 days ago · 8 km deep · 76 km away
  9. 1.62km E of Pinnacles, CA · 1755 days ago · 3 km deep · 56 km away
  10. 1.76km NW of Pinnacles, CA · 1755 days ago · 7 km deep · 62 km away
  11. 2.512km S of Tres Pinos, CA · 1755 days ago · 4 km deep · 76 km away · felt by 3
  12. 1.812km S of Tres Pinos, CA · 1756 days ago · 4 km deep · 76 km away
  13. 1.911km S of Tres Pinos, CA · 1756 days ago · 5 km deep · 77 km away
  14. 2.118km NNW of San Simeon, CA · 1758 days ago · 5 km deep · 34 km away
  15. 1.511km S of Tres Pinos, CA · 1758 days ago · 4 km deep · 77 km away
  16. 2.212km S of Tres Pinos, CA · 1758 days ago · 5 km deep · 76 km away
  17. 2.617km NNW of San Simeon, CA · 1760 days ago · 5 km deep · 35 km away · felt by 1
  18. 2.710km NNE of New Idria, CA · 1760 days ago · 9 km deep · 67 km away · felt by 1
  19. 1.912km S of Tres Pinos, CA · 1761 days ago · 4 km deep · 76 km away · felt by 2
  20. 1.79km SSW of Tres Pinos, CA · 1762 days ago · 3 km deep · 80 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73665821. Read Sat, Oct 3, 2026, 8:22 PM UTC.