QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem797509
USGS iscgem797509
4 Mar 1970, 04:30
148 km SW of Merizo Village, Guam
A magnitude 6.2 mw earthquake at 17.9 km depth.
Published location
Where is 148 km SW 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.
12.218000, 143.811000
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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
iscgem797509
Coordinates
12.218, 143.811
Network
iscgem
Significance
593