California earthquakes

M2.3 earthquake 4 km NNW of Aromas, California

A magnitude 2.3 earthquake struck 4 km NNW of Aromas, California on Sat, Apr 21, 1990, 11:38 AM PDT (18:38 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M3.8 1 km NNE 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
2.3 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1990-04-21 18:38:09 UTC
Depth
11.1 km (6.9 mi), shallow
Epicenter
36.922° N, 121.666° 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
±0.14
Depth from
From location
Station coverage gap
49°
Stations used
83

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 173 in the 60 days after this one and 190 in the 30 days before it.

After

  1. 2.14 km NNW of Aromas, California · 13314 days ago · 11 km deep · 0 km away
  2. 1.91 km E of Aromas, California · 13313 days ago · 9 km deep · 5 km away
  3. 3.81 km NNE of Aromas, California · 13313 days ago · 6 km deep · 4 km away
  4. 2.09 km SSW of Ridgemark, California · 13313 days ago · 6 km deep · 31 km away
  5. 2.13 km NNW of Aromas, California · 13313 days ago · 8 km deep · 1 km away
  6. 3.322 km NNE of Soledad, California · 13313 days ago · 9 km deep · 54 km away
  7. 1.722 km NNE of Soledad, California · 13313 days ago · 8 km deep · 54 km away
  8. 1.93 km ESE of Aromas, California · 13313 days ago · 7 km deep · 7 km away
  9. 1.822 km SSE of Tres Pinos, California · 13313 days ago · 5 km deep · 54 km away
  10. 2.51 km NE of Aromas, California · 13312 days ago · 5 km deep · 4 km away
  11. 2.125 km NNE of King City, California · 13312 days ago · 1 km deep · 84 km away
  12. 2.022 km NNE of Soledad, California · 13312 days ago · 8 km deep · 54 km away
  13. 2.14 km ESE of Interlaken, California · 13312 days ago · 11 km deep · 3 km away
  14. 2.51 km ENE of Aromas, California · 13312 days ago · 7 km deep · 5 km away
  15. 2.84 km ENE of Interlaken, California · 13311 days ago · 7 km deep · 5 km away
  16. 1.62 km N of Aromas, California · 13311 days ago · 6 km deep · 3 km away
  17. 1.729 km E of Tres Pinos, California · 13311 days ago · 5 km deep · 61 km away
  18. 1.521 km NNE of Soledad, California · 13311 days ago · 8 km deep · 54 km away
  19. 2.314 km E of Seven Trees, California · 13311 days ago · 2 km deep · 42 km away
  20. 1.714 km E of Seven Trees, California · 13311 days ago · 3 km deep · 42 km away
  21. 2.617 km NW of Diablo Grande, California · 13311 days ago · 3 km deep · 69 km away
  22. 2.74 km E of Interlaken, California · 13311 days ago · 6 km deep · 4 km away
  23. 2.22 km ESE of Aromas, California · 13311 days ago · 7 km deep · 6 km away
  24. 2.817 km NW of Diablo Grande, California · 13311 days ago · 3 km deep · 69 km away
  25. 1.94 km E of Interlaken, California · 13311 days ago · 9 km deep · 4 km away
  26. 2.337 km SSW of South Dos Palos, California · 13310 days ago · 5 km deep · 79 km away
  27. 2.96 km ENE of Interlaken, California · 13310 days ago · 3 km deep · 5 km away
  28. 1.721 km NE of Soledad, California · 13310 days ago · 8 km deep · 63 km away
  29. 1.64 km NNW of Aromas, California · 13309 days ago · 9 km deep · 1 km away
  30. 1.63 km N of Aromas, California · 13309 days ago · 7 km deep · 2 km away
  31. 2.02 km SSW of Los Altos Hills, California · 13309 days ago · 5 km deep · 65 km away
  32. 1.62 km NNW of Aromas, California · 13309 days ago · 9 km deep · 2 km away
  33. 2.1Central California · 13309 days ago · 8 km deep · 2 km away
  34. 2.34 km N of Corralitos, California · 13308 days ago · 12 km deep · 17 km away
  35. 1.91 km NNE of Aromas, California · 13308 days ago · 7 km deep · 3 km away
  36. 1.50 km WNW of San Juan Bautista, California · 13308 days ago · 9 km deep · 13 km away
  37. 2.814 km ESE of Tres Pinos, California · 13308 days ago · 11 km deep · 48 km away
  38. 2.45 km N of Interlaken, California · 13307 days ago · 9 km deep · 11 km away
  39. 1.56 km N of Interlaken, California · 13307 days ago · 8 km deep · 11 km away
  40. 1.65 km ESE of Interlaken, California · 13307 days ago · 13 km deep · 2 km away
  41. 1.65 km ENE of Interlaken, California · 13305 days ago · 7 km deep · 6 km away
  42. 2.84 km NW of Day Valley, California · 13305 days ago · 13 km deep · 26 km away
  43. 2.44 km NNW of Day Valley, California · 13305 days ago · 13 km deep · 26 km away
  44. 2.35 km SW of Tres Pinos, California · 13305 days ago · 10 km deep · 33 km away
  45. 2.421 km SE of Tres Pinos, California · 13304 days ago · 7 km deep · 54 km away
  46. 1.85 km SW of Ridgemark, California · 13304 days ago · 4 km deep · 29 km away
  47. 1.61 km NE of Corralitos, California · 13303 days ago · 15 km deep · 15 km away
  48. 1.93 km WSW of Cupertino, California · 13303 days ago · 5 km deep · 56 km away
  49. 1.79 km NE of Morgan Hill, California · 13303 days ago · 8 km deep · 32 km away
  50. 1.64 km SE of Aromas, California · 13303 days ago · 6 km deep · 9 km away
  51. 1.625 km NE of Soledad, California · 13301 days ago · 6 km deep · 59 km away
  52. 2.66 km S of Sunol, California · 13300 days ago · 7 km deep · 71 km away
  53. 2.014 km ENE of East Foothills, California · 13300 days ago · 5 km deep · 55 km away
  54. 2.02 km N of Lexington Hills, California · 13299 days ago · 5 km deep · 40 km away
  55. 1.624 km NE of Greenfield, California · 13299 days ago · 5 km deep · 75 km away
  56. 2.45 km ESE of Interlaken, California · 13298 days ago · 8 km deep · 2 km away
  57. 1.98 km N of Day Valley, California · 13298 days ago · 4 km deep · 26 km away
  58. 2.21 km ENE of Aromas, California · 13297 days ago · 7 km deep · 5 km away
  59. 1.91 km E of Aromas, California · 13297 days ago · 7 km deep · 5 km away
  60. 1.64 km E of Interlaken, California · 13297 days ago · 10 km deep · 3 km away

The first 60 of 173.

Before

  1. 1.73 km NNW of Aromas, California · 13314 days ago · 8 km deep · 1 km away
  2. 1.92 km NNE of Aromas, California · 13314 days ago · 6 km deep · 3 km away
  3. 2.24 km ESE of Interlaken, California · 13314 days ago · 10 km deep · 2 km away
  4. 1.72 km NNW of Aromas, California · 13314 days ago · 9 km deep · 2 km away
  5. 2.08 km N of Morgan Hill, California · 13314 days ago · 7 km deep · 31 km away
  6. 2.13 km NNW of Aromas, California · 13314 days ago · 8 km deep · 1 km away
  7. 2.221 km NNE of Soledad, California · 13314 days ago · 8 km deep · 55 km away
  8. 1.64 km NNW of Aromas, California · 13314 days ago · 8 km deep · 1 km away
  9. 2.62 km NNW of Aromas, California · 13314 days ago · 11 km deep · 2 km away
  10. 1.84 km NNW of Aromas, California · 13314 days ago · 6 km deep · 1 km away
  11. 1.72 km NNW of Aromas, California · 13315 days ago · 9 km deep · 2 km away
  12. 1.92 km NNW of Aromas, California · 13315 days ago · 9 km deep · 2 km away
  13. 1.62 km NNW of Aromas, California · 13315 days ago · 9 km deep · 2 km away
  14. 2.22 km NNE of Aromas, California · 13315 days ago · 4 km deep · 3 km away
  15. 1.64 km ENE of Interlaken, California · 13315 days ago · 6 km deep · 5 km away
  16. 1.71 km ESE of Aromas, California · 13315 days ago · 8 km deep · 6 km away
  17. 1.74 km NNW of Aromas, California · 13315 days ago · 11 km deep · 0 km away
  18. 2.14 km NNW of Aromas, California · 13315 days ago · 8 km deep · 0 km away
  19. 1.87 km ENE of Interlaken, California · 13315 days ago · 4 km deep · 5 km away
  20. 1.71 km E of Aromas, California · 13315 days ago · 8 km deep · 5 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc156373. Read Sat, Oct 3, 2026, 11:44 AM UTC.