QQuakeFacts
USGS iscgem870148

30 Mar 1964, 08:09

78 km S of Cordova, Alaska

A magnitude 6 mw earthquake at 11.3 km depth.

Depth11.3 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated19 December 2025Latest timestamp stored in this record

Published location

Where is 78 km S of Cordova, 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.

59.840000, -145.803000

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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
iscgem870148
Coordinates
59.84, -145.803
Network
iscgem
Significance
556