QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem888978
USGS iscgem888978
3 Dec 1956, 07:20
66 km SSE of Nikolski, Alaska
A magnitude 6 mw earthquake at 13.6 km depth.
Published location
Where is 66 km SSE of Nikolski, 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.
52.374000, -168.527000
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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
iscgem888978
Coordinates
52.374, -168.527
Network
iscgem
Significance
556