QQuakeFacts
USGS usp000bsyy

18 Mar 2003, 14:45

98 km W of Umatac Village, Guam

A magnitude 5.2 mwc earthquake at 159.9 km depth.

Depth159.9 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated19 December 2025Latest timestamp stored in this record

Published location

Where is 98 km W of Umatac Village, Guam?

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

13.179000, 143.766000

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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
usp000bsyy
Coordinates
13.179, 143.766
Network
us
Significance
416