43 km W of Dien Bien Phu, Vietnam

A magnitude 6.9 ms earthquake at 33 km depth.

Depth33 kmPublished hypocentral depth

Tsunami flagNot flaggedUSGS catalog flag, not a current warning

Updated26 August 2020Latest timestamp stored in this record

Published location

Where is 43 km W of Dien Bien Phu, Vietnam?

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

21.400000, 102.604000

Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.

Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.

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Catalog fields and provenance

Event ID

usp0001wb1

Coordinates

21.4, 102.604

Network

Significance

732