QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0003cgy
USGS usp0003cgy

28 Jan 1988, 11:20

100 km E of Sarangani, Philippines

A magnitude 6.1 mw earthquake at 43.6 km depth.

Depth43.6 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated28 April 2022Latest timestamp stored in this record

Published location

Where is 100 km E of Sarangani, 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.

5.327000, 126.369000

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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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Nearby events with a similar magnitude

M 6.1

64 km ESE of Bobon, Philippines

M 6.1

31 km W of Gadung, Philippines

M 6.1

26 km E of Mangili, Philippines

M 6.1

3 km NW of Kiupo, Philippines

M 6.1

78 km E of Pondaguitan, Philippines

M 6.1

17 km SSW of Maitum, Philippines

Catalog fields and provenance
Event ID
usp0003cgy
Coordinates
5.327, 126.369
Network
us
Significance
572