QQuakeFacts
USGS ak018d04tq82

10 Oct 2018, 07:27

34 km SSE of Perryville, Alaska

A magnitude 5 mw earthquake at 48.3 km depth.

Depth48.3 kmPublished hypocentral depth
Tsunami flagFlaggedUSGS catalog flag, not a current warning
Updated22 December 2025Latest timestamp stored in this record

Published location

Where is 34 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.

55.639900, -158.894800

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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
ak018d04tq82
Coordinates
55.6399, -158.8948
Network
ak
Significance
385