QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem890855
USGS iscgem890855
15 Jul 1954, 01:03
182 km WNW of Hihifo, Tonga
A magnitude 6.1 mw earthquake at 15 km depth.
Published location
Where is 182 km WNW 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.
-15.230000, -175.323000
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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
iscgem890855
Coordinates
-15.23, -175.323
Network
iscgem
Significance
571