QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0001xzd
USGS usp0001xzd

27 Aug 1983, 19:49

4 km W of Bunawan, Philippines

A magnitude 6 ms earthquake at 20.5 km depth.

Depth20.5 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated19 December 2025Latest timestamp stored in this record

Published location

Where is 4 km W of Bunawan, Philippines?

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

8.171000, 125.946000

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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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M 6

19 km ESE of Lazi, Philippines

M 6

16 km NE of Cagdianao, Philippines

Catalog fields and provenance
Event ID
usp0001xzd
Coordinates
8.171, 125.946
Network
us
Significance
554