QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgemsup891605
USGS iscgemsup891605
3 Apr 1953, 04:17
127 km SSE of Pangai, Tonga
A magnitude 6 mw earthquake at 15 km depth.
Published location
Where is 127 km SSE of Pangai, 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.
-20.854000, -173.824000
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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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Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
iscgemsup891605
Coordinates
-20.854, -173.824
Network
iscgemsup
Significance
559