QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000127u
USGS usp000127u
5 Aug 1979, 01:53
292 km SW of Haveluloto, Tonga
A magnitude 6.4 mb earthquake at 181 km depth.
Published location
Where is 292 km SW of Haveluloto, 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.
-22.715000, -177.494000
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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
usp000127u
Coordinates
-22.715, -177.494
Network
us
Significance
630