Hawaii earthquakes

M4.0 earthquake 13 km SSW of Volcano, Hawaii

A magnitude 4.0 earthquake struck 13 km SSW of Volcano, Hawaii on Sun, Feb 20, 1977, 5:29 PM HST (03:29 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.1 18 km N of P?hala, 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
4.0 (ml), minor
Local time
UTC
1977-02-21 03:29:43 UTC
Depth
9.5 km (5.9 mi), shallow
Epicenter
19.322° N, 155.268° 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 0.5 km horizontally, 0.4 km in depth
Magnitude uncertainty
±0.02
Depth from
From location
Station coverage gap
94°
Stations used
35

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 2.312 km SSE of Fern Forest, Hawaii · 18104 days ago · 7 km deep · 21 km away
  2. 2.86 km SW of Leilani Estates, Hawaii · 18104 days ago · 4 km deep · 34 km away
  3. 2.821 km W of Volcano, Hawaii · 18104 days ago · 8 km deep · 20 km away
  4. 3.113 km SSE of Fern Forest, Hawaii · 18104 days ago · 7 km deep · 21 km away
  5. 2.915 km S of Fern Forest, Hawaii · 18104 days ago · 9 km deep · 14 km away
  6. 3.224 km W of Volcano, Hawaii · 18104 days ago · 7 km deep · 26 km away
  7. 3.111 km SW of Leilani Estates, Hawaii · 18104 days ago · 9 km deep · 29 km away
  8. 2.413 km SSE of Volcano, Hawaii · 18103 days ago · 5 km deep · 8 km away
  9. 2.79 km S of Volcano, Hawaii · 18103 days ago · 8 km deep · 5 km away
  10. 2.614 km S of Volcano, Hawaii · 18103 days ago · 9 km deep · 1 km away
  11. 2.314 km SSE of Volcano, Hawaii · 18103 days ago · 6 km deep · 11 km away
  12. 2.513 km SSE of Eden Roc, Hawaii · 18102 days ago · 6 km deep · 25 km away
  13. 2.41 km E of Waikoloa, Hawaii · 18102 days ago · 13 km deep · 87 km away
  14. 2.314 km S of Volcano, Hawaii · 18102 days ago · 8 km deep · 1 km away
  15. 2.114 km SSE of Fern Forest, Hawaii · 18102 days ago · 7 km deep · 20 km away
  16. 2.414 km S of Fern Forest, Hawaii · 18102 days ago · 4 km deep · 15 km away
  17. 2.113 km SW of Leilani Estates, Hawaii · 18102 days ago · 8 km deep · 27 km away
  18. 2.211 km S of Volcano, Hawaii · 18101 days ago · 6 km deep · 6 km away
  19. 3.052 km SE of Naalehu, Hawaii · 18101 days ago · 16 km deep · 67 km away
  20. 2.5Island of Hawaii, Hawaii · 18101 days ago · 9 km deep · 25 km away
  21. 2.751 km SE of Naalehu, Hawaii · 18101 days ago · 11 km deep · 65 km away
  22. 3.013 km SSE of Fern Forest, Hawaii · 18101 days ago · 8 km deep · 20 km away
  23. 3.019 km W of Volcano, Hawaii · 18101 days ago · 7 km deep · 21 km away
  24. 2.318 km ENE of Honaunau-Napoopoo, Hawaii · 18100 days ago · 2 km deep · 52 km away
  25. 3.319 km WSW of Volcano, Hawaii · 18100 days ago · 8 km deep · 17 km away
  26. 3.316 km WSW of Kailua-Kona, Hawaii · 18099 days ago · 11 km deep · 96 km away
  27. 2.520 km W of Volcano, Hawaii · 18099 days ago · 10 km deep · 19 km away
  28. 2.914 km SSE of Volcano, Hawaii · 18098 days ago · 9 km deep · 8 km away
  29. 2.915 km SW of Leilani Estates, Hawaii · 18098 days ago · 7 km deep · 28 km away
  30. 2.212 km SW of Leilani Estates, Hawaii · 18098 days ago · 7 km deep · 29 km away
  31. 2.16 km S of Leilani Estates, Hawaii · 18097 days ago · 6 km deep · 39 km away
  32. 3.67 km SW of Volcano, Hawaii · 18096 days ago · 15 km deep · 10 km away
  33. 2.821 km N of P?hala, Hawaii · 18096 days ago · 5 km deep · 25 km away
  34. 3.014 km S of Volcano, Hawaii · 18096 days ago · 9 km deep · 5 km away
  35. 2.113 km S of Pa‘auilo, Hawaii · 18095 days ago · 18 km deep · 67 km away
  36. 2.417 km SSE of Fern Forest, Hawaii · 18095 days ago · 5 km deep · 22 km away
  37. 2.414 km S of Fern Forest, Hawaii · 18095 days ago · 4 km deep · 15 km away
  38. 2.816 km SSE of Fern Forest, Hawaii · 18095 days ago · 8 km deep · 22 km away
  39. 2.51 km E of Honaunau-Napoopoo, Hawaii · 18095 days ago · 6 km deep · 62 km away
  40. 2.513 km SSE of Volcano, Hawaii · 18095 days ago · 8 km deep · 10 km away
  41. 2.719 km N of P?hala, Hawaii · 18095 days ago · 9 km deep · 20 km away
  42. 2.514 km SSE of Volcano, Hawaii · 18095 days ago · 6 km deep · 9 km away
  43. 4.118 km N of P?hala, Hawaii · 18094 days ago · 51 km deep · 26 km away
  44. 2.312 km S of Volcano, Hawaii · 18094 days ago · 6 km deep · 6 km away
  45. 2.410 km S of Volcano, Hawaii · 18094 days ago · 6 km deep · 6 km away
  46. 2.9Hawaii region, Hawaii · 18094 days ago · 42 km deep · 48 km away
  47. 2.913 km SSE of Volcano, Hawaii · 18094 days ago · 8 km deep · 8 km away
  48. 2.413 km SSE of Eden Roc, Hawaii · 18094 days ago · 8 km deep · 25 km away
  49. 2.517 km WSW of Volcano, Hawaii · 18094 days ago · 8 km deep · 17 km away
  50. 3.112 km S of Volcano, Hawaii · 18093 days ago · 8 km deep · 5 km away
  51. 2.214 km S of Volcano, Hawaii · 18093 days ago · 4 km deep · 5 km away
  52. 2.514 km SSE of Eden Roc, Hawaii · 18093 days ago · 8 km deep · 26 km away
  53. 2.414 km ESE of Leilani Estates, Hawaii · 18093 days ago · 10 km deep · 51 km away
  54. 3.113 km S of Fern Forest, Hawaii · 18093 days ago · 9 km deep · 15 km away
  55. 2.113 km NE of P?hala, Hawaii · 18092 days ago · 2 km deep · 13 km away
  56. 2.312 km SSE of Fern Forest, Hawaii · 18092 days ago · 7 km deep · 18 km away
  57. 3.115 km S of Fern Forest, Hawaii · 18091 days ago · 9 km deep · 14 km away
  58. 2.912 km S of Volcano, Hawaii · 18091 days ago · 9 km deep · 6 km away
  59. 2.114 km SSE of Eden Roc, Hawaii · 18091 days ago · 8 km deep · 25 km away
  60. 2.214 km S of Volcano, Hawaii · 18091 days ago · 8 km deep · 2 km away

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event hv19770421. Read Tue, Sep 22, 2026, 8:36 PM UTC.