QQuakeFacts
USGS iscgem788799

1 Dec 1970, 22:09

105 km SE of Adak, Alaska

A magnitude 6.1 mw earthquake at 31 km depth.

Depth31 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated19 December 2025Latest timestamp stored in this record

Published location

Where is 105 km SE of Adak, 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.

51.317000, -175.409000

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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
iscgem788799
Coordinates
51.317, -175.409
Network
iscgem
Significance
567