Hawaii earthquakes

M2.5 earthquake 7 km SW of Volcano, Hawaii

A magnitude 2.5 earthquake struck 7 km SW of Volcano, Hawaii on Wed, Sep 21, 1966, 4:22 AM GMT-10 (14:22 UTC), 27 km (17 mi) below the surface.

A larger quake followed: M3.3 11 km ENE of Pepeekeo, Hawaii. 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
2.5 (ml), micro
Local time
UTC
1966-09-21 14:22:53 UTC
Depth
27.1 km (16.8 mi), shallow
Epicenter
19.393° N, 155.288° W
Region
Hawaii
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 1.3 km horizontally, 0.9 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
89°
Stations used
11

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 70 in the 60 days after this one and 53 in the 30 days before it.

After

  1. 3.311 km ENE of Pepeekeo, Hawaii · 21915 days ago · 4 km deep · 61 km away
  2. 2.69 km SSE of Volcano, Hawaii · 21914 days ago · 5 km deep · 10 km away
  3. 2.5Island of Hawaii, Hawaii · 21914 days ago · 7 km deep · 29 km away
  4. 2.82 km E of Ainaloa, Hawaii · 21914 days ago · 11 km deep · 36 km away
  5. 2.911 km E of Naalehu, Hawaii · 21914 days ago · 30 km deep · 41 km away
  6. 2.212 km SSE of Volcano, Hawaii · 21911 days ago · 4 km deep · 12 km away
  7. 2.316 km WNW of Volcano, Hawaii · 21910 days ago · 12 km deep · 15 km away
  8. 2.212 km SSE of Volcano, Hawaii · 21909 days ago · 3 km deep · 12 km away
  9. 2.417 km WNW of Volcano, Hawaii · 21909 days ago · 8 km deep · 16 km away
  10. 3.717 km W of Volcano, Hawaii · 21909 days ago · 4 km deep · 13 km away
  11. 2.519 km S of Leilani Estates, Hawaii · 21908 days ago · 10 km deep · 41 km away
  12. 2.516 km S of Fern Forest, Hawaii · 21907 days ago · 7 km deep · 17 km away
  13. 3.0Island of Hawaii, Hawaii · 21907 days ago · 5 km deep · 56 km away
  14. 2.85 km ENE of Honaunau-Napoopoo, Hawaii · 21906 days ago · 4 km deep · 56 km away
  15. 2.919 km W of Volcano, Hawaii · 21905 days ago · 7 km deep · 14 km away
  16. 3.76 km S of Volcano, Hawaii · 21904 days ago · 29 km deep · 5 km away
  17. 2.75 km SSW of Volcano, Hawaii · 21903 days ago · 27 km deep · 3 km away
  18. 2.616 km SSE of Fern Forest, Hawaii · 21902 days ago · 6 km deep · 22 km away
  19. 2.915 km NNE of P?hala, Hawaii · 21900 days ago · 10 km deep · 17 km away
  20. 2.817 km NNE of P?hala, Hawaii · 21898 days ago · 6 km deep · 15 km away
  21. 2.720 km NW of P?hala, Hawaii · 21896 days ago · 16 km deep · 33 km away
  22. 2.420 km WSW of Volcano, Hawaii · 21895 days ago · 7 km deep · 13 km away
  23. 2.414 km SSE of Fern Forest, Hawaii · 21895 days ago · 9 km deep · 23 km away
  24. 2.414 km SSE of Fern Forest, Hawaii · 21895 days ago · 9 km deep · 23 km away
  25. 3.415 km SSE of Fern Forest, Hawaii · 21894 days ago · 10 km deep · 25 km away
  26. 3.113 km SSE of Volcano, Hawaii · 21893 days ago · -1 km deep · 13 km away
  27. 2.618 km WSW of Volcano, Hawaii · 21893 days ago · 7 km deep · 11 km away
  28. 2.711 km SSE of Fern Forest, Hawaii · 21892 days ago · 9 km deep · 21 km away
  29. 3.010 km SW of Volcano, Hawaii · 21892 days ago · 31 km deep · 2 km away
  30. 2.519 km WSW of Volcano, Hawaii · 21891 days ago · 9 km deep · 13 km away
  31. 2.9Island of Hawaii, Hawaii · 21891 days ago · 2 km deep · 17 km away
  32. 2.913 km ENE of P?hala, Hawaii · 21891 days ago · -1 km deep · 16 km away
  33. 2.915 km S of Fern Forest, Hawaii · 21891 days ago · -1 km deep · 18 km away
  34. 3.24 km ENE of P?hala, Hawaii · 21890 days ago · 0 km deep · 26 km away
  35. 3.218 km S of Fern Forest, Hawaii · 21888 days ago · 4 km deep · 19 km away
  36. 3.312 km NW of Wai‘?hinu, Hawaii · 21887 days ago · 10 km deep · 49 km away
  37. 2.518 km WSW of Volcano, Hawaii · 21885 days ago · 9 km deep · 12 km away
  38. 3.17 km WNW of Kurtistown, Hawaii · 21884 days ago · 22 km deep · 32 km away
  39. 2.614 km S of Fern Forest, Hawaii · 21879 days ago · 5 km deep · 17 km away
  40. 2.99 km S of Leilani Estates, Hawaii · 21878 days ago · 7 km deep · 38 km away
  41. 2.85 km ESE of Honaunau-Napoopoo, Hawaii · 21878 days ago · -1 km deep · 56 km away
  42. 4.218 km N of P?hala, Hawaii · 21876 days ago · 10 km deep · 20 km away
  43. 2.812 km SSE of Volcano, Hawaii · 21876 days ago · -1 km deep · 11 km away
  44. 2.69 km SSE of Fern Forest, Hawaii · 21876 days ago · 4 km deep · 19 km away
  45. 3.016 km SSE of Fern Forest, Hawaii · 21876 days ago · 8 km deep · 24 km away
  46. 2.916 km S of Volcano, Hawaii · 21875 days ago · 0 km deep · 12 km away
  47. 2.621 km S of Fern Forest, Hawaii · 21874 days ago · 7 km deep · 23 km away
  48. 3.26 km SW of Volcano, Hawaii · 21872 days ago · 32 km deep · 2 km away
  49. 3.7Island of Hawaii, Hawaii · 21871 days ago · 0 km deep · 65 km away
  50. 2.82 km WSW of Leilani Estates, Hawaii · 21870 days ago · 0 km deep · 37 km away
  51. 2.725 km N of P?hala, Hawaii · 21870 days ago · -1 km deep · 23 km away
  52. 2.717 km S of Volcano, Hawaii · 21870 days ago · 1 km deep · 14 km away
  53. 2.518 km SSW of Leilani Estates, Hawaii · 21868 days ago · 4 km deep · 30 km away
  54. 2.611 km SSW of Volcano, Hawaii · 21868 days ago · -1 km deep · 6 km away
  55. 2.53 km WNW of Kalaoa, Hawaii · 21868 days ago · 9 km deep · 86 km away
  56. 2.818 km S of Fern Forest, Hawaii · 21866 days ago · 8 km deep · 20 km away
  57. 2.619 km S of Fern Forest, Hawaii · 21866 days ago · 1 km deep · 22 km away
  58. 2.815 km SSE of Fern Forest, Hawaii · 21864 days ago · 6 km deep · 21 km away
  59. 2.513 km ESE of Leilani Estates, Hawaii · 21863 days ago · 9 km deep · 52 km away
  60. 2.812 km SSW of Volcano, Hawaii · 21863 days ago · 32 km deep · 6 km away

The first 60 of 70.

Before

  1. 2.67 km SSW of Volcano, Hawaii · 21916 days ago · 31 km deep · 2 km away
  2. 2.66 km SSW of Volcano, Hawaii · 21916 days ago · 28 km deep · 2 km away
  3. 2.610 km SSW of Volcano, Hawaii · 21916 days ago · 29 km deep · 5 km away
  4. 2.58 km SSW of Volcano, Hawaii · 21916 days ago · 27 km deep · 3 km away
  5. 2.66 km SSW of Volcano, Hawaii · 21916 days ago · 29 km deep · 2 km away
  6. 3.27 km SW of Volcano, Hawaii · 21916 days ago · 30 km deep · 1 km away
  7. 2.610 km SSW of Volcano, Hawaii · 21917 days ago · 30 km deep · 4 km away
  8. 3.610 km SSW of Volcano, Hawaii · 21917 days ago · 28 km deep · 4 km away
  9. 2.613 km S of Volcano, Hawaii · 21917 days ago · 6 km deep · 10 km away
  10. 2.317 km SSE of Volcano, Hawaii · 21920 days ago · 1 km deep · 17 km away
  11. 2.719 km NNE of P?hala, Hawaii · 21921 days ago · 9 km deep · 13 km away
  12. 2.446 km ESE of P?hala, Hawaii · 21921 days ago · 16 km deep · 50 km away
  13. 2.521 km W of Volcano, Hawaii · 21923 days ago · 3 km deep · 16 km away
  14. 3.219 km SSE of Volcano, Hawaii · 21924 days ago · 1 km deep · 18 km away
  15. 2.46 km WSW of P?hala, Hawaii · 21925 days ago · 9 km deep · 35 km away
  16. 2.415 km SSE of Volcano, Hawaii · 21928 days ago · 1 km deep · 16 km away
  17. 2.319 km NNE of P?hala, Hawaii · 21928 days ago · 8 km deep · 13 km away
  18. 2.716 km NNE of P?hala, Hawaii · 21928 days ago · 8 km deep · 16 km away
  19. 2.118 km S of Fern Forest, Hawaii · 21930 days ago · 5 km deep · 22 km away
  20. 2.426 km N of P?hala, Hawaii · 21931 days ago · -1 km deep · 23 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event hv19660394. Read Tue, Sep 22, 2026, 12:15 PM UTC.