QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0002fc9
USGS usp0002fc9
31 May 1985, 08:24
120 km SSW of Merizo Village, Guam
A magnitude 6 mw earthquake at 31.9 km depth.
Published location
Where is 120 km SSW of Merizo Village, Guam?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
12.246000, 144.280000
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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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Catalog fields and provenance
Event ID
usp0002fc9
Coordinates
12.246, 144.28
Network
us
Significance
554