QQuakeFacts
USGS usp000avtg

4 Jan 2002, 08:31

33 km E of ‘Ohonua, Tonga

A magnitude 5.1 mwc earthquake at 33 km depth.

Depth33 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated2 May 2022Latest timestamp stored in this record

Published location

Where is 33 km E of ‘Ohonua, 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.

-21.296000, -174.631000

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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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Catalog fields and provenance
Event ID
usp000avtg
Coordinates
-21.296, -174.631
Network
us
Significance
400