QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0000n31
USGS usp0000n31
23 Mar 1977, 18:10
20 km SE of Alo, Wallis and Futuna
A magnitude 6 ms earthquake at 2 km depth.
Published location
Where is 20 km SE of Alo, Wallis and Futuna?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-14.427000, -177.957000
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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
usp0000n31
Coordinates
-14.427, -177.957
Network
us
Significance
554