QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem797518
USGS iscgem797518

4 Mar 1970, 15:27

29 km E of Santiago, Philippines

A magnitude 6 mw earthquake at 28.9 km depth.

Depth28.9 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated19 December 2025Latest timestamp stored in this record

Published location

Where is 29 km E of Santiago, 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.

7.323000, 126.836000

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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 6.04

246 km NNW of Tobelo, Indonesia

M 6.04

16 km E of Caraga, Philippines

M 6.05

203 km NNW of Tobelo, Indonesia

M 6.03

33 km SSE of Tamisan, Philippines

M 6.05

147 km E of Pondaguitan, Philippines

M 6.06

64 km SE of Bobon, Philippines

Catalog fields and provenance
Event ID
iscgem797518
Coordinates
7.323, 126.836
Network
iscgem
Significance
561