QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000cvv8
USGS usp000cvv8
22 May 2004, 08:36
79 km S of Pangai, Tonga
A magnitude 5.4 mwc earthquake at 33.1 km depth.
Published location
Where is 79 km S 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.
-20.522000, -174.254000
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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
usp000cvv8
Coordinates
-20.522, -174.254
Network
us
Significance
449