QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem881779
USGS iscgem881779
12 Apr 1959, 20:54
90 km NE of Hihifo, Tonga
A magnitude 6.2 mw earthquake at 37 km depth.
Published location
Where is 90 km NE of Hihifo, Tonga?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-15.376000, -173.193000
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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
iscgem881779
Coordinates
-15.376, -173.193
Network
iscgem
Significance
593