QQuakeFacts
USGS us10008q64

6 May 2017, 21:43

146 km SW of Nikolski, Alaska

A magnitude 5.2 mww earthquake at 31.7 km depth.

Depth31.7 kmPublished hypocentral depth
Tsunami flagFlaggedUSGS catalog flag, not a current warning
Updated22 December 2025Latest timestamp stored in this record

Published location

Where is 146 km SW 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.

52.112100, -170.543400

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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
us10008q64
Coordinates
52.1121, -170.5434
Network
us
Significance
416