QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000c6f3
USGS usp000c6f3
1 Sept 2003, 16:11
21 km ESE of Alcantara, Philippines
A magnitude 5.1 mb earthquake at 22.3 km depth.
Published location
Where is 21 km ESE of Alcantara, 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.
12.166000, 122.228000
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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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Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
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Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
usp000c6f3
Coordinates
12.166, 122.228
Network
us
Significance
400