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USGS iscgem902779

11 Nov 1938, 00:57

104 km SSE of Perryville, Alaska

A magnitude 6.6 mw earthquake at 35 km depth.

Depth35 kmPublished hypocentral depth

Tsunami flagNot flaggedUSGS catalog flag, not a current warning

Updated25 April 2022Latest timestamp stored in this record

Published location

Where is 104 km SSE of Perryville, 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.

55.018000, -158.640000

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Map data © OpenStreetMap contributors

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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72 km SE of Sand Point, Alaska

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Catalog fields and provenance

Event ID

iscgem902779

Coordinates

55.018, -158.64

Network

iscgem

Significance

662