QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp00028mq
USGS usp00028mq

29 Oct 1984, 23:18

4 km E of Kalbay, Philippines

A magnitude 6.6 mw earthquake at 153.2 km depth.

Depth153.2 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated27 April 2022Latest timestamp stored in this record

Published location

Where is 4 km E of Kalbay, 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.

5.731000, 125.543000

Open the interactive map ↗

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.

Need a current safety answer?

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

Open the USGS event →

Continue exploring

Nearby events with a similar magnitude

M 6.6

7 km ENE of South Upi, Philippines

M 6.6

6 km SSW of Pangyan, Philippines

M 6.6

66 km E of Pondaguitan, Philippines

M 6.6

71 km W of Gadung, Philippines

M 6.6

63 km WSW of Sangay, Philippines

M 6.6

89 km W of Bantogon, Philippines

Catalog fields and provenance
Event ID
usp00028mq
Coordinates
5.731, 125.543
Network
us
Significance
670