QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0001xr0
USGS usp0001xr0
17 Aug 1983, 13:17
16 km ENE of Piddig, Philippines
A magnitude 6.5 ms earthquake at 28.8 km depth.
Published location
Where is 16 km ENE of Piddig, 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.
18.231000, 120.860000
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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
usp0001xr0
Coordinates
18.231, 120.86
Network
us
Significance
650