QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0004c30
USGS usp0004c30
17 Jul 1990, 19:06
10 km ESE of Ambuclao, Philippines
A magnitude 6.1 mw earthquake at 18.3 km depth.
Published location
Where is 10 km ESE of Ambuclao, 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.
16.433000, 120.838000
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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
usp0004c30
Coordinates
16.433, 120.838
Network
us
Significance
572