QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem774772
USGS iscgem774772

25 Apr 1972, 20:30

18 km W of Harrison, Philippines

A magnitude 7.3 mw earthquake at 25.5 km depth.

Depth25.5 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated19 December 2025Latest timestamp stored in this record

Published location

Where is 18 km W of Harrison, 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.

13.422000, 120.268000

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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 7.3

14 km WNW of Bolitoc, Philippines

M 7.42

14 km ENE of Suklayin, Philippines

M 7.21

7 km N of Agbannawag, Philippines

M 7.5

113 km W of Cabittaogan, Philippines

M 7.1

10 km E of Sabang, Philippines

M 7.6

28 km SE of Minuri, Philippines

Catalog fields and provenance
Event ID
iscgem774772
Coordinates
13.422, 120.268
Network
iscgem
Significance
829