QQuakeFacts
USGS iscgem855112

2 Jul 1965, 21:58

81 km E of Nikolski, Alaska

A magnitude 7.8 mw earthquake at 39 km depth.

Depth39 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated19 December 2025Latest timestamp stored in this record

Published location

Where is 81 km E 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.

53.009000, -167.653000

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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
iscgem855112
Coordinates
53.009, -167.653
Network
iscgem
Significance
936