QQuakeFacts
USGS iscgem891410

5 Jan 1953, 07:48

171 km WNW of Attu Station, Alaska

A magnitude 7 mw earthquake at 21.3 km depth.

Depth21.3 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated26 April 2022Latest timestamp stored in this record

Published location

Where is 171 km WNW 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.

53.631000, 170.973000

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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
iscgem891410
Coordinates
53.631, 170.973
Network
iscgem
Significance
754