QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp00006nz
USGS usp00006nz

7 Jun 1974, 07:47

172 km WNW of Hihifo, Tonga

A magnitude 6 ms earthquake at 33 km depth.

Depth33 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated19 December 2025Latest timestamp stored in this record

Published location

Where is 172 km WNW 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.

-15.443000, -175.315000

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Map data © OpenStreetMap contributors

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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Nearby events with a similar magnitude

M 6

220 km S of Mata-Utu, Wallis and Futuna

M 6

136 km SSW of Gataivai, Samoa

M 6

276 km SSE of Alo, Wallis and Futuna

M 6

140 km W of Hihifo, Tonga

M 6

77 km NE of Hihifo, Tonga

M 6

182 km SSE of Mata-Utu, Wallis and Futuna

Catalog fields and provenance
Event ID
usp00006nz
Coordinates
-15.443, -175.315
Network
us
Significance
554