QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem894641
USGS iscgem894641
21 Aug 1951, 11:57
20 km SSW of Honaunau-Napoopoo, Hawaii
A magnitude 6.3 mw earthquake at 10 km depth.
Published location
Where is 20 km SSW of Honaunau-Napoopoo, Hawaii?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
19.278000, -155.923000
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What the numbers mean
Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.
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Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
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Catalog fields and provenance
Event ID
iscgem894641
Coordinates
19.278, -155.923
Network
iscgem
Significance
613