QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem898205
USGS iscgem898205
31 Dec 1947, 15:06
101 km NNE of Hihifo, Tonga
A magnitude 6.3 mw earthquake at 15 km depth.
Published location
Where is 101 km NNE 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.
-15.121000, -173.403000
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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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Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
iscgem898205
Coordinates
-15.121, -173.403
Network
iscgem
Significance
607