QQuakeFacts
USGS usp00046wv

21 Mar 1990, 16:46

Kermadec Islands region

A magnitude 6.6 mw earthquake at 144.8 km depth.

Depth144.8 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated28 April 2022Latest timestamp stored in this record

Published location

Where is Kermadec Islands region?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

-31.092000, -179.093000

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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
usp00046wv
Coordinates
-31.092, -179.093
Network
us
Significance
670