Hawaii earthquakes

M2.3 earthquake 85 km WSW of Captain Cook, Hawaii

A magnitude 2.3 earthquake struck 85 km WSW of Captain Cook, Hawaii on Wed, Jun 21, 1978, 6:47 PM HST (04:47 UTC), 26 km (16 mi) below the surface.

A larger quake followed: M3.5 89 km WSW of Captain Cook, Hawaii. This one was a foreshock.

Captain Cook 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
2.3 (Md, duration), micro
Magnitude from
Hawaiian Volcano Observatory
Local time
UTC
1978-06-22 04:47:29 UTC
Depth
26.1 km (16.2 mi), shallow
Epicenter
19.077° N, 156.605° 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 12.3 km horizontally, 8.2 km in depth
Depth from
From location
Station coverage gap
321°, poorly surrounded by stations
Stations used
14

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 3.589 km WSW of Captain Cook, Hawaii · 17635 days ago · 33 km deep · 4 km away
  2. 3.591 km WSW of Captain Cook, Hawaii · 17635 days ago · 28 km deep · 6 km away
  3. 3.0Hawaii region, Hawaii · 17634 days ago · 35 km deep · 27 km away
  4. 2.44 km E of Honaunau-Napoopoo, Hawaii · 17631 days ago · 4 km deep · 92 km away
  5. 2.02 km SSE of Honaunau-Napoopoo, Hawaii · 17627 days ago · 12 km deep · 88 km away
  6. 3.4Hawaii region, Hawaii · 17626 days ago · 33 km deep · 43 km away
  7. 1.6Island of Hawaii, Hawaii · 17623 days ago · 9 km deep · 88 km away
  8. 3.497 km WSW of Captain Cook, Hawaii · 17620 days ago · 29 km deep · 12 km away
  9. 3.373 km W of Hawaiian Ocean View, Hawaii · 17614 days ago · 35 km deep · 15 km away
  10. 2.917 km W of Kalaoa, Hawaii · 17613 days ago · 34 km deep · 88 km away
  11. 2.418 km SSE of Honaunau-Napoopoo, Hawaii · 17612 days ago · 9 km deep · 88 km away
  12. 2.612 km NW of Wai‘?hinu, Hawaii · 17603 days ago · 7 km deep · 97 km away
  13. 2.312 km NNW of Wai‘?hinu, Hawaii · 17600 days ago · 4 km deep · 98 km away
  14. 1.95 km N of Honaunau-Napoopoo, Hawaii · 17600 days ago · 5 km deep · 91 km away
  15. 2.48 km SSE of Honaunau-Napoopoo, Hawaii · 17599 days ago · 10 km deep · 89 km away
  16. 2.910 km WNW of Kalaoa, Hawaii · 17592 days ago · 32 km deep · 93 km away
  17. 2.95 km NNW of Kalaoa, Hawaii · 17584 days ago · 9 km deep · 100 km away

Before

  1. 2.44 km E of Honaunau-Napoopoo, Hawaii · 17639 days ago · 4 km deep · 92 km away
  2. 2.8106 km WSW of Captain Cook, Hawaii · 17641 days ago · 5 km deep · 22 km away
  3. 3.289 km W of Hawaiian Ocean View, Hawaii · 17645 days ago · 5 km deep · 16 km away
  4. 2.49 km E of Honaunau-Napoopoo, Hawaii · 17651 days ago · 1 km deep · 97 km away
  5. 2.929 km W of Kalaoa, Hawaii · 17655 days ago · 6 km deep · 81 km away
  6. 2.71 km NNW of Kailua-Kona, Hawaii · 17661 days ago · 7 km deep · 90 km away
  7. 3.02 km W of Kailua-Kona, Hawaii · 17661 days ago · 8 km deep · 88 km away
  8. 2.455 km SW of Captain Cook, Hawaii · 17663 days ago · 32 km deep · 32 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event hv19781024. Read Sat, Oct 3, 2026, 2:34 PM UTC.