QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0000e2t
USGS usp0000e2t
26 Dec 1975, 15:56
146 km ESE of Hihifo, Tonga
A magnitude 7.8 ms earthquake at 33 km depth.
Published location
Where is 146 km ESE 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.
-16.264000, -172.467000
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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
usp0000e2t
Coordinates
-16.264, -172.467
Network
us
Significance
936