QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgemsup16958242
USGS iscgemsup16958242
8 May 1913, 18:35
127 km S of Hihifo, Tonga
A magnitude 6.9 mB earthquake at 170 km depth.
Published location
Where is 127 km S 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.
-17.090000, -173.985000
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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
iscgemsup16958242
Coordinates
-17.09, -173.985
Network
iscgemsup
Significance
732