QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem886230
USGS iscgem886230
22 Mar 1957, 14:21
39 km S of Akutan, Alaska
A magnitude 7.1 mw earthquake at 46.6 km depth.
Published location
Where is 39 km S of Akutan, 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.
53.778000, -165.771000
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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
iscgem886230
Coordinates
53.778, -165.771
Network
iscgem
Significance
769