California earthquakes

M1.5 earthquake Central California

A magnitude 1.5 earthquake struck in Central California on Mon, Feb 23, 1981, 7:14 PM PST (03:14 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M3.1 2 km E of Aromas, California. This one was a foreshock.

Aromas 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
1.5 (md), micro
Local time
UTC
1981-02-24 03:14:33 UTC
Depth
6.8 km (4.2 mi), shallow
Epicenter
36.880° N, 121.616° 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, 0.4 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
82°
Stations used
25

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 167 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 3.12 km E of Aromas, California · 16646 days ago · 6 km deep · 1 km away
  2. 1.52 km ESE of Aromas, California · 16646 days ago · 6 km deep · 0 km away
  3. 2.33 km ESE of Aromas, California · 16646 days ago · 7 km deep · 1 km away
  4. 1.621 km NE of Soledad, California · 16645 days ago · 3 km deep · 55 km away
  5. 1.53 km ENE of Tres Pinos, California · 16645 days ago · 10 km deep · 30 km away
  6. 1.58 km ENE of Morgan Hill, California · 16645 days ago · 2 km deep · 32 km away
  7. 1.524 km NE of Greenfield, California · 16645 days ago · 6 km deep · 70 km away
  8. 1.820 km SSE of Tres Pinos, California · 16644 days ago · 4 km deep · 45 km away
  9. 1.813 km NW of Pacific Grove, California · 16643 days ago · 8 km deep · 43 km away
  10. 1.54 km W of Gonzales, California · 16642 days ago · 7 km deep · 43 km away
  11. 1.623 km ENE of Soledad, California · 16642 days ago · 4 km deep · 64 km away
  12. 1.615 km SSE of Livermore, California · 16642 days ago · 2 km deep · 76 km away
  13. 1.615 km SSE of Livermore, California · 16642 days ago · 2 km deep · 76 km away
  14. 1.715 km SSE of Livermore, California · 16642 days ago · 3 km deep · 76 km away
  15. 1.79 km ESE of East Foothills, California · 16642 days ago · 9 km deep · 54 km away
  16. 1.612 km SW of Tres Pinos, California · 16642 days ago · 10 km deep · 27 km away
  17. 2.614 km SSE of Livermore, California · 16642 days ago · 2 km deep · 77 km away
  18. 1.64 km NE of Interlaken, California · 16641 days ago · 12 km deep · 13 km away
  19. 2.04 km NE of Interlaken, California · 16641 days ago · 12 km deep · 14 km away
  20. 1.712 km N of Morgan Hill, California · 16641 days ago · 7 km deep · 41 km away
  21. 2.127 km NE of Soledad, California · 16641 days ago · 6 km deep · 59 km away
  22. 2.34 km E of Fremont, California · 16639 days ago · 10 km deep · 80 km away
  23. 4.45 km E of Fremont, California · 16639 days ago · 12 km deep · 80 km away
  24. 2.25 km E of Fremont, California · 16639 days ago · 10 km deep · 79 km away
  25. 2.15 km E of Fremont, California · 16639 days ago · 9 km deep · 79 km away
  26. 3.05 km E of Fremont, California · 16639 days ago · 11 km deep · 80 km away
  27. 1.74 km E of Fremont, California · 16639 days ago · 8 km deep · 80 km away
  28. 1.65 km E of Fremont, California · 16639 days ago · 9 km deep · 79 km away
  29. 2.45 km E of Fremont, California · 16639 days ago · 9 km deep · 79 km away
  30. 1.64 km E of Fremont, California · 16639 days ago · 14 km deep · 79 km away
  31. 1.65 km E of Fremont, California · 16639 days ago · 6 km deep · 79 km away
  32. 1.86 km E of Fremont, California · 16639 days ago · 9 km deep · 78 km away
  33. 2.15 km E of Fremont, California · 16639 days ago · 9 km deep · 79 km away
  34. 1.75 km E of Fremont, California · 16639 days ago · 9 km deep · 79 km away
  35. 1.85 km E of Fremont, California · 16639 days ago · 9 km deep · 79 km away
  36. 1.73 km E of Fremont, California · 16639 days ago · 8 km deep · 80 km away
  37. 2.05 km E of Fremont, California · 16639 days ago · 9 km deep · 78 km away
  38. 1.74 km E of Fremont, California · 16639 days ago · 9 km deep · 79 km away
  39. 1.65 km E of Fremont, California · 16639 days ago · 10 km deep · 80 km away
  40. 1.84 km E of Fremont, California · 16639 days ago · 9 km deep · 79 km away
  41. 1.85 km SSW of Sunol, California · 16639 days ago · 11 km deep · 79 km away
  42. 2.39 km NNE of Livermore, California · 16639 days ago · 13 km deep · 98 km away
  43. 1.64 km E of Fremont, California · 16639 days ago · 8 km deep · 80 km away
  44. 1.94 km E of Fremont, California · 16638 days ago · 10 km deep · 80 km away
  45. 1.85 km E of Fremont, California · 16638 days ago · 10 km deep · 80 km away
  46. 1.66 km ENE of East Foothills, California · 16638 days ago · 4 km deep · 60 km away
  47. 1.824 km NE of Greenfield, California · 16638 days ago · 1 km deep · 69 km away
  48. 1.78 km NE of Gilroy, California · 16638 days ago · 4 km deep · 23 km away
  49. 1.523 km ENE of Soledad, California · 16637 days ago · 4 km deep · 63 km away
  50. 1.79 km E of San Martin, California · 16637 days ago · 8 km deep · 25 km away
  51. 1.64 km E of Fremont, California · 16636 days ago · 8 km deep · 80 km away
  52. 1.915 km SSE of Tres Pinos, California · 16636 days ago · 3 km deep · 40 km away
  53. 2.12 km ESE of Aromas, California · 16635 days ago · 8 km deep · 0 km away
  54. 2.522 km NE of Soledad, California · 16635 days ago · 4 km deep · 50 km away
  55. 1.824 km NE of Greenfield, California · 16635 days ago · 7 km deep · 67 km away
  56. 3.22 km ESE of Aromas, California · 16634 days ago · 8 km deep · 0 km away
  57. 1.73 km SW of Davenport, California · 16634 days ago · 7 km deep · 55 km away
  58. 2.714 km E of Seven Trees, California · 16634 days ago · 7 km deep · 48 km away
  59. 1.719 km SSE of Tres Pinos, California · 16633 days ago · 7 km deep · 43 km away
  60. 3.31 km ENE of Aromas, California · 16632 days ago · 7 km deep · 2 km away

The first 60 of 167.

Before

  1. 2.53 km ESE of Aromas, CA · 16647 days ago · 7 km deep · 0 km away
  2. 3.12 km ESE of Aromas, California · 16647 days ago · 7 km deep · 0 km away
  3. 3.03 km ESE of Aromas, CA · 16647 days ago · 7 km deep · 0 km away
  4. 1.92 km ESE of Aromas, California · 16647 days ago · 6 km deep · 0 km away
  5. 1.67 km ENE of San Martin, California · 16647 days ago · 3 km deep · 26 km away
  6. 1.610 km NE of San Martin, CA · 16647 days ago · 8 km deep · 31 km away
  7. 1.610 km NNW of Hollister, California · 16648 days ago · 3 km deep · 15 km away
  8. 1.52 km S of San Juan Bautista, California · 16648 days ago · 3 km deep · 10 km away
  9. 3.17 km ENE of San Martin, California · 16648 days ago · 3 km deep · 26 km away
  10. 1.59 km S of Tres Pinos, California · 16648 days ago · 4 km deep · 31 km away
  11. 2.87 km ENE of San Martin, California · 16648 days ago · 3 km deep · 26 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1060716. Read Tue, Sep 22, 2026, 7:46 PM UTC.