QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us700034ya
USGS us700034ya

12 Apr 2019, 13:23

121 km ENE of Hihifo, Tonga

A magnitude 6 mww earthquake at 15.4 km depth.

Depth15.4 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated22 December 2025Latest timestamp stored in this record

Published location

Where is 121 km ENE 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.

-15.406700, -172.817100

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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

172 km WNW of Hihifo, Tonga

M 6

77 km NE of Hihifo, Tonga

Catalog fields and provenance
Event ID
us700034ya
Coordinates
-15.4067, -172.8171
Network
us
Significance
558