California earthquakes

M1.8 earthquake 24 km ENE of Greenfield, California

A magnitude 1.8 earthquake struck 24 km ENE of Greenfield, California on Tue, Feb 17, 1981, 5:39 AM PST (13:39 UTC), 7 km (5 mi) below the surface.

A larger quake followed: M2.1 10 km WSW of Avenal, California. This one was a foreshock.

Greenfield 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
1.8 (md), micro
Local time
UTC
1981-02-17 13:39:34 UTC
Depth
7.4 km (4.6 mi), shallow
Epicenter
36.431° N, 121.011° 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
±0.28
Depth from
From location
Station coverage gap
73°
Stations used
36

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 165 in the 60 days after this one and 29 in the 30 days before it.

After

  1. 1.63 km S of San Juan Bautista, California · 16653 days ago · 6 km deep · 63 km away
  2. 1.76 km WSW of Avenal, California · 16653 days ago · 13 km deep · 89 km away
  3. 1.88 km WSW of Avenal, California · 16653 days ago · 13 km deep · 89 km away
  4. 2.110 km WSW of Avenal, California · 16652 days ago · 15 km deep · 88 km away
  5. 1.59 km SSW of Tres Pinos, California · 16652 days ago · 3 km deep · 44 km away
  6. 1.825 km NE of King City, California · 16652 days ago · 8 km deep · 6 km away
  7. 2.49 km ESE of Gilroy, California · 16652 days ago · 5 km deep · 74 km away
  8. 1.69 km ESE of Gilroy, California · 16651 days ago · 5 km deep · 74 km away
  9. 1.621 km NE of Soledad, California · 16651 days ago · 7 km deep · 19 km away
  10. 1.79 km NNE of Hollister, California · 16650 days ago · 6 km deep · 63 km away
  11. 1.74 km SSE of San Juan Bautista, California · 16650 days ago · 5 km deep · 62 km away
  12. 3.01 km ESE of Aromas, California · 16650 days ago · 9 km deep · 74 km away
  13. 2.12 km ESE of Aromas, California · 16650 days ago · 7 km deep · 74 km away
  14. 1.62 km ESE of Aromas, California · 16650 days ago · 7 km deep · 74 km away
  15. 1.78 km SSW of Tres Pinos, California · 16650 days ago · 3 km deep · 44 km away
  16. 1.726 km NE of Soledad, California · 16649 days ago · 8 km deep · 17 km away
  17. 2.52 km ESE of Aromas, California · 16649 days ago · 7 km deep · 73 km away
  18. 2.22 km ESE of Aromas, California · 16649 days ago · 7 km deep · 73 km away
  19. 2.11 km SSW of Tres Pinos, California · 16649 days ago · 6 km deep · 48 km away
  20. 1.75 km SW of Gilroy, California · 16649 days ago · 5 km deep · 80 km away
  21. 1.83 km N of Avenal, California · 16649 days ago · 14 km deep · 90 km away
  22. 2.52 km ESE of Aromas, California · 16649 days ago · 7 km deep · 73 km away
  23. 1.711 km SSE of Tres Pinos, California · 16649 days ago · 18 km deep · 37 km away
  24. 2.43 km ESE of Aromas, California · 16648 days ago · 7 km deep · 73 km away
  25. 2.27 km ENE of San Martin, California · 16648 days ago · 3 km deep · 88 km away
  26. 2.87 km ENE of San Martin, California · 16648 days ago · 3 km deep · 88 km away
  27. 1.66 km NW of Parkfield, California · 16648 days ago · 10 km deep · 72 km away
  28. 1.59 km S of Tres Pinos, California · 16648 days ago · 4 km deep · 42 km away
  29. 3.17 km ENE of San Martin, California · 16648 days ago · 3 km deep · 88 km away
  30. 1.52 km S of San Juan Bautista, California · 16648 days ago · 3 km deep · 64 km away
  31. 1.610 km NNW of Hollister, California · 16648 days ago · 3 km deep · 68 km away
  32. 1.610 km NE of San Martin, CA · 16647 days ago · 8 km deep · 92 km away
  33. 1.67 km ENE of San Martin, California · 16647 days ago · 3 km deep · 88 km away
  34. 3.04 km WSW of Coalinga, California · 16647 days ago · 8 km deep · 65 km away
  35. 1.92 km ESE of Aromas, California · 16647 days ago · 6 km deep · 74 km away
  36. 3.03 km ESE of Aromas, CA · 16647 days ago · 7 km deep · 74 km away
  37. 3.12 km ESE of Aromas, California · 16647 days ago · 7 km deep · 74 km away
  38. 2.53 km ESE of Aromas, CA · 16647 days ago · 7 km deep · 74 km away
  39. 1.5Central California · 16647 days ago · 7 km deep · 74 km away
  40. 3.12 km E of Aromas, California · 16647 days ago · 6 km deep · 74 km away
  41. 1.52 km ESE of Aromas, California · 16646 days ago · 6 km deep · 74 km away
  42. 2.33 km ESE of Aromas, California · 16646 days ago · 7 km deep · 73 km away
  43. 1.810 km NE of Coalinga, California · 16646 days ago · 11 km deep · 69 km away
  44. 1.621 km NE of Soledad, California · 16646 days ago · 3 km deep · 19 km away
  45. 3.617 km NW of Parkfield, California · 16646 days ago · 5 km deep · 61 km away
  46. 1.53 km ENE of Tres Pinos, California · 16645 days ago · 10 km deep · 49 km away
  47. 1.58 km ENE of Morgan Hill, California · 16645 days ago · 2 km deep · 95 km away
  48. 1.524 km NE of Greenfield, California · 16645 days ago · 6 km deep · 4 km away
  49. 1.820 km SSE of Tres Pinos, California · 16644 days ago · 4 km deep · 29 km away
  50. 1.813 km NW of Pacific Grove, California · 16643 days ago · 8 km deep · 96 km away
  51. 1.54 km W of Gonzales, California · 16643 days ago · 7 km deep · 44 km away
  52. 1.623 km ENE of Soledad, California · 16642 days ago · 4 km deep · 10 km away
  53. 1.612 km SW of Tres Pinos, California · 16642 days ago · 10 km deep · 46 km away
  54. 1.64 km NE of Interlaken, California · 16641 days ago · 12 km deep · 86 km away
  55. 2.04 km NE of Interlaken, California · 16641 days ago · 12 km deep · 87 km away
  56. 2.723 km NE of San Ardo, California · 16641 days ago · 8 km deep · 38 km away
  57. 2.79 km W of Huron, California · 16641 days ago · 5 km deep · 77 km away
  58. 2.127 km NE of Soledad, California · 16641 days ago · 6 km deep · 17 km away
  59. 1.824 km NE of Greenfield, California · 16638 days ago · 1 km deep · 5 km away
  60. 1.78 km NE of Gilroy, California · 16638 days ago · 4 km deep · 82 km away

The first 60 of 165.

Before

  1. 1.75 km WNW of San Juan Bautista, California · 16654 days ago · 5 km deep · 71 km away
  2. 1.623 km ENE of San Lucas, California · 16654 days ago · 6 km deep · 28 km away
  3. 1.620 km NW of Parkfield, California · 16654 days ago · 4 km deep · 58 km away
  4. 1.99 km NNW of Hollister, California · 16654 days ago · 4 km deep · 68 km away
  5. 2.022 km NNE of Soledad, California · 16654 days ago · 2 km deep · 25 km away
  6. 2.12 km NNW of Hollister, California · 16654 days ago · 7 km deep · 61 km away
  7. 1.523 km ENE of Soledad, California · 16654 days ago · 6 km deep · 9 km away
  8. 1.722 km NE of San Ardo, California · 16655 days ago · 9 km deep · 38 km away
  9. 1.82 km NNW of Hollister, California · 16655 days ago · 7 km deep · 61 km away
  10. 1.816 km N of San Simeon, California · 16656 days ago · 6 km deep · 74 km away
  11. 2.77 km ENE of San Martin, California · 16656 days ago · 3 km deep · 88 km away
  12. 1.633 km NW of San Simeon, California · 16657 days ago · 8 km deep · 80 km away
  13. 1.825 km NE of King City, California · 16657 days ago · 0 km deep · 5 km away
  14. 2.013 km S of Tres Pinos, California · 16657 days ago · 4 km deep · 37 km away
  15. 1.613 km SE of Tres Pinos, California · 16657 days ago · 3 km deep · 35 km away
  16. 1.622 km NNE of Soledad, California · 16657 days ago · 4 km deep · 26 km away
  17. 1.622 km NE of Soledad, California · 16658 days ago · 6 km deep · 24 km away
  18. 1.512 km NE of San Miguel, California · 16658 days ago · 8 km deep · 78 km away
  19. 2.224 km NE of Greenfield, California · 16658 days ago · 8 km deep · 5 km away
  20. 2.121 km NE of Soledad, California · 16658 days ago · 3 km deep · 22 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1060474. Read Tue, Sep 22, 2026, 8:51 PM UTC.