Hawaii earthquakes

M3.5 earthquake 9 km NNW of Mountain View, Hawaii

A magnitude 3.5 earthquake struck 9 km NNW of Mountain View, Hawaii on Thu, Aug 21, 1986, 1:14 PM HST (23:14 UTC), 17 km (11 mi) below the surface.

A larger quake followed: M4.0 17 km SW of Volcano, Hawaii. This one was a foreshock.

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

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The earthquake

Magnitude
3.5 (ml), minor
Local time
UTC
1986-08-21 23:14:52 UTC
Depth
17.4 km (10.8 mi), shallow
Epicenter
19.625° N, 155.156° 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 0.6 km horizontally, 2.9 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
145°
Stations used
34

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. 2.024 km N of P?hala, Hawaii · 14619 days ago · 6 km deep · 43 km away
  2. 1.79 km W of Volcano, Hawaii · 14619 days ago · 3 km deep · 28 km away
  3. 2.116 km S of Fern Forest, Hawaii · 14619 days ago · 8 km deep · 34 km away
  4. 3.19 km W of Volcano, Hawaii · 14619 days ago · 6 km deep · 28 km away
  5. 2.09 km WSW of Volcano, Hawaii · 14619 days ago · 6 km deep · 28 km away
  6. 2.69 km W of Volcano, Hawaii · 14619 days ago · 6 km deep · 28 km away
  7. 1.89 km WSW of Volcano, Hawaii · 14619 days ago · 7 km deep · 28 km away
  8. 2.09 km WSW of Volcano, Hawaii · 14619 days ago · 5 km deep · 28 km away
  9. 1.7Island of Hawaii, Hawaii · 14619 days ago · 6 km deep · 27 km away
  10. 2.58 km W of Volcano, Hawaii · 14619 days ago · 7 km deep · 27 km away
  11. 2.28 km WSW of Volcano, Hawaii · 14619 days ago · 5 km deep · 28 km away
  12. 2.910 km WSW of Volcano, Hawaii · 14619 days ago · 6 km deep · 29 km away
  13. 2.59 km WSW of Volcano, Hawaii · 14619 days ago · 6 km deep · 28 km away
  14. 2.39 km WSW of Volcano, Hawaii · 14619 days ago · 7 km deep · 29 km away
  15. 2.19 km WSW of Volcano, Hawaii · 14619 days ago · 7 km deep · 28 km away
  16. 1.89 km WSW of Volcano, Hawaii · 14618 days ago · 6 km deep · 28 km away
  17. 2.19 km WSW of Volcano, Hawaii · 14618 days ago · 5 km deep · 29 km away
  18. 2.08 km WSW of Volcano, Hawaii · 14618 days ago · 8 km deep · 28 km away
  19. 1.69 km WSW of Volcano, Hawaii · 14618 days ago · 4 km deep · 29 km away
  20. 1.915 km S of Fern Forest, Hawaii · 14618 days ago · 8 km deep · 34 km away
  21. 1.89 km WSW of Volcano, Hawaii · 14618 days ago · 6 km deep · 29 km away
  22. 2.312 km WSW of Volcano, Hawaii · 14618 days ago · 9 km deep · 33 km away
  23. 2.945 km SE of Naalehu, Hawaii · 14617 days ago · 9 km deep · 92 km away
  24. 1.78 km WSW of Volcano, Hawaii · 14617 days ago · 6 km deep · 28 km away
  25. 1.618 km N of P?hala, Hawaii · 14617 days ago · 9 km deep · 45 km away
  26. 1.615 km SE of Fern Forest, Hawaii · 14617 days ago · 7 km deep · 33 km away
  27. 2.37 km NNW of P?hala, Hawaii · 14617 days ago · 7 km deep · 55 km away
  28. 1.713 km SSE of Volcano, Hawaii · 14616 days ago · 5 km deep · 34 km away
  29. 2.115 km S of Volcano, Hawaii · 14616 days ago · 7 km deep · 37 km away
  30. 2.111 km SSW of Honoka‘a, Hawaii · 14616 days ago · 29 km deep · 53 km away
  31. 1.99 km E of P?hala, Hawaii · 14616 days ago · 43 km deep · 52 km away
  32. 1.913 km S of Fern Forest, Hawaii · 14616 days ago · 8 km deep · 31 km away
  33. 2.114 km S of Volcano, Hawaii · 14615 days ago · 7 km deep · 35 km away
  34. 1.515 km S of Fern Forest, Hawaii · 14615 days ago · 6 km deep · 34 km away
  35. 1.714 km SSE of Fern Forest, Hawaii · 14614 days ago · 6 km deep · 32 km away
  36. 1.511 km NNE of P?hala, Hawaii · 14614 days ago · 7 km deep · 47 km away
  37. 2.012 km S of Volcano, Hawaii · 14614 days ago · 7 km deep · 33 km away
  38. 2.025 km N of P?hala, Hawaii · 14614 days ago · 8 km deep · 43 km away
  39. 2.31 km NE of Honaunau-Napoopoo, Hawaii · 14614 days ago · 6 km deep · 75 km away
  40. 1.812 km S of Volcano, Hawaii · 14614 days ago · 5 km deep · 33 km away
  41. 2.125 km W of Volcano, Hawaii · 14613 days ago · 7 km deep · 39 km away
  42. 4.017 km SW of Volcano, Hawaii · 14613 days ago · 30 km deep · 38 km away
  43. 1.715 km SW of Volcano, Hawaii · 14613 days ago · 30 km deep · 37 km away
  44. 1.715 km SSW of Volcano, Hawaii · 14613 days ago · 29 km deep · 37 km away
  45. 1.65 km SSW of Volcano, Hawaii · 14613 days ago · 2 km deep · 27 km away
  46. 2.220 km SE of Waimea, Hawaii · 14612 days ago · 16 km deep · 51 km away
  47. 1.716 km SW of Volcano, Hawaii · 14612 days ago · 28 km deep · 38 km away
  48. 1.916 km SE of Fern Forest, Hawaii · 14611 days ago · 6 km deep · 33 km away
  49. 2.147 km SE of Naalehu, Hawaii · 14611 days ago · 12 km deep · 97 km away
  50. 2.243 km SE of Naalehu, Hawaii · 14611 days ago · 10 km deep · 89 km away
  51. 3.137 km ESE of Naalehu, Hawaii · 14611 days ago · 14 km deep · 82 km away
  52. 2.136 km ESE of Naalehu, Hawaii · 14611 days ago · 13 km deep · 83 km away
  53. 3.739 km SE of Naalehu, Hawaii · 14611 days ago · 12 km deep · 85 km away
  54. 3.038 km SE of Naalehu, Hawaii · 14611 days ago · 12 km deep · 87 km away
  55. 1.641 km SE of Naalehu, Hawaii · 14611 days ago · 10 km deep · 88 km away
  56. 1.942 km SE of Naalehu, Hawaii · 14611 days ago · 9 km deep · 90 km away
  57. 1.942 km SE of Naalehu, Hawaii · 14611 days ago · 10 km deep · 89 km away
  58. 2.443 km SE of Naalehu, Hawaii · 14611 days ago · 8 km deep · 87 km away
  59. 3.739 km SE of Naalehu, Hawaii · 14611 days ago · 10 km deep · 88 km away
  60. 1.836 km SE of Naalehu, Hawaii · 14611 days ago · 13 km deep · 84 km away

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event hv221555. Read Tue, Sep 22, 2026, 12:16 PM UTC.