QQuakeFacts
USGS us2000cnh7

24 Jan 2018, 00:04

256 km ESE of Chiniak, Alaska

A magnitude 5.5 mww earthquake at 10 km depth.

Depth10 kmPublished hypocentral depth
Tsunami flagFlaggedUSGS catalog flag, not a current warning
Updated7 August 2022Latest timestamp stored in this record

Published location

Where is 256 km ESE of Chiniak, 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.

56.546000, -148.535200

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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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Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.

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Catalog fields and provenance
Event ID
us2000cnh7
Coordinates
56.546, -148.5352
Network
us
Significance
466