QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem901328
USGS iscgem901328
11 May 1940, 14:54
67 km S of Attu Station, Alaska
A magnitude 6.4 mw earthquake at 25 km depth.
Published location
Where is 67 km S of Attu Station, Alaska?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
52.246000, 173.353000
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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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Catalog fields and provenance
Event ID
iscgem901328
Coordinates
52.246, 173.353
Network
iscgem
Significance
624