Hawaii earthquakes

M2.1 earthquake 13 km SSE of Fern Forest, Hawaii

A magnitude 2.1 earthquake struck 13 km SSE of Fern Forest, Hawaii on Sun, Aug 20, 1978, 11:32 AM HST (21:32 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M2.4 12 km SE of Fern Forest, Hawaii. This one was a foreshock.

Fern Forest forecastMore in Hawaii

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
2.1 (ml), micro
Local time
UTC
1978-08-20 21:32:58 UTC
Depth
5.6 km (3.5 mi), shallow
Epicenter
19.360° N, 155.069° 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, 1.0 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
88°
Stations used
31

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 196 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 2.412 km SE of Fern Forest, Hawaii · 17532 days ago · 7 km deep · 3 km away
  2. 3.023 km W of Volcano, Hawaii · 17532 days ago · 9 km deep · 42 km away
  3. 2.317 km W of Volcano, Hawaii · 17531 days ago · 6 km deep · 35 km away
  4. 2.214 km S of Fern Forest, Hawaii · 17531 days ago · 8 km deep · 8 km away
  5. 2.15 km SSW of Volcano, Hawaii · 17531 days ago · 2 km deep · 20 km away
  6. 2.318 km NNE of P?hala, Hawaii · 17531 days ago · 8 km deep · 36 km away
  7. 2.417 km W of Volcano, Hawaii · 17531 days ago · 6 km deep · 35 km away
  8. 1.86 km SSW of Volcano, Hawaii · 17531 days ago · 1 km deep · 21 km away
  9. 2.46 km SSW of Volcano, Hawaii · 17531 days ago · 2 km deep · 21 km away
  10. 2.112 km S of Fern Forest, Hawaii · 17531 days ago · 7 km deep · 5 km away
  11. 1.911 km S of Volcano, Hawaii · 17531 days ago · 6 km deep · 16 km away
  12. 2.314 km SSE of Volcano, Hawaii · 17531 days ago · 7 km deep · 14 km away
  13. 1.911 km S of Volcano, Hawaii · 17530 days ago · 7 km deep · 16 km away
  14. 2.324 km W of Volcano, Hawaii · 17530 days ago · 7 km deep · 43 km away
  15. 1.98 km SW of Volcano, Hawaii · 17530 days ago · 2 km deep · 22 km away
  16. 2.313 km SSE of Volcano, Hawaii · 17530 days ago · 6 km deep · 13 km away
  17. 2.117 km WSW of Volcano, Hawaii · 17530 days ago · 9 km deep · 34 km away
  18. 2.65 km SSW of Waimea, Hawaii · 17530 days ago · 28 km deep · 96 km away
  19. 2.45 km SSW of Volcano, Hawaii · 17530 days ago · 2 km deep · 21 km away
  20. 1.8Island of Hawaii, Hawaii · 17530 days ago · 2 km deep · 22 km away
  21. 1.9Island of Hawaii, Hawaii · 17530 days ago · 1 km deep · 20 km away
  22. 2.211 km SW of Volcano, Hawaii · 17530 days ago · 2 km deep · 24 km away
  23. 2.48 km SW of Volcano, Hawaii · 17530 days ago · 2 km deep · 22 km away
  24. 1.98 km SSW of Volcano, Hawaii · 17530 days ago · 1 km deep · 22 km away
  25. 2.5Island of Hawaii, Hawaii · 17530 days ago · 9 km deep · 36 km away
  26. 2.214 km S of Fern Forest, Hawaii · 17530 days ago · 7 km deep · 8 km away
  27. 2.013 km SSE of Eden Roc, Hawaii · 17530 days ago · 8 km deep · 4 km away
  28. 2.311 km S of Volcano, Hawaii · 17530 days ago · 8 km deep · 16 km away
  29. 2.08 km SSW of Volcano, Hawaii · 17530 days ago · 2 km deep · 22 km away
  30. 1.72 km WNW of P?pa‘ikou, Hawaii · 17529 days ago · 40 km deep · 49 km away
  31. 2.513 km S of Fern Forest, Hawaii · 17529 days ago · 8 km deep · 5 km away
  32. 2.112 km S of Volcano, Hawaii · 17529 days ago · 6 km deep · 16 km away
  33. 1.9Island of Hawaii, Hawaii · 17529 days ago · 2 km deep · 22 km away
  34. 2.07 km S of Volcano, Hawaii · 17529 days ago · 2 km deep · 19 km away
  35. 2.46 km ESE of Leilani Estates, Hawaii · 17529 days ago · 8 km deep · 24 km away
  36. 2.26 km SSW of Volcano, Hawaii · 17529 days ago · 1 km deep · 19 km away
  37. 3.316 km S of Fern Forest, Hawaii · 17529 days ago · 8 km deep · 8 km away
  38. 2.18 km SSW of Leilani Estates, Hawaii · 17529 days ago · 5 km deep · 12 km away
  39. 3.329 km ESE of Naalehu, Hawaii · 17529 days ago · 42 km deep · 55 km away
  40. 2.113 km SE of Fern Forest, Hawaii · 17529 days ago · 8 km deep · 3 km away
  41. 2.528 km ESE of Naalehu, Hawaii · 17529 days ago · 42 km deep · 55 km away
  42. 2.112 km S of Fern Forest, Hawaii · 17529 days ago · 8 km deep · 6 km away
  43. 3.013 km SSE of Volcano, Hawaii · 17528 days ago · 9 km deep · 12 km away
  44. 1.97 km SW of Volcano, Hawaii · 17528 days ago · 1 km deep · 23 km away
  45. 2.522 km N of P?hala, Hawaii · 17528 days ago · 6 km deep · 44 km away
  46. 2.113 km SSE of Volcano, Hawaii · 17528 days ago · 6 km deep · 13 km away
  47. 2.116 km SE of Fern Forest, Hawaii · 17528 days ago · 5 km deep · 4 km away
  48. 2.513 km S of Fern Forest, Hawaii · 17528 days ago · 7 km deep · 6 km away
  49. 3.1Island of Hawaii, Hawaii · 17528 days ago · 8 km deep · 34 km away
  50. 2.315 km W of Volcano, Hawaii · 17528 days ago · 6 km deep · 34 km away
  51. 2.015 km S of Fern Forest, Hawaii · 17527 days ago · 6 km deep · 9 km away
  52. 2.07 km SSW of Volcano, Hawaii · 17527 days ago · 2 km deep · 22 km away
  53. 2.827 km SSE of Fern Forest, Hawaii · 17527 days ago · 44 km deep · 14 km away
  54. 2.414 km SSW of Volcano, Hawaii · 17527 days ago · 9 km deep · 21 km away
  55. 2.37 km SW of Volcano, Hawaii · 17527 days ago · 2 km deep · 22 km away
  56. 2.118 km N of P?hala, Hawaii · 17527 days ago · 6 km deep · 46 km away
  57. 1.87 km SW of Volcano, Hawaii · 17526 days ago · 1 km deep · 22 km away
  58. 2.111 km S of Volcano, Hawaii · 17526 days ago · 7 km deep · 15 km away
  59. 2.08 km SW of Volcano, Hawaii · 17526 days ago · 2 km deep · 22 km away
  60. 2.427 km SSE of Waimea, Hawaii · 17526 days ago · 12 km deep · 72 km away

The first 60 of 196.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event hv19781367. Read Tue, Sep 22, 2026, 8:59 PM UTC.