QQuakeFacts
USGS us2000cn1j

23 Jan 2018, 11:47

228 km SE of Chiniak, Alaska

A magnitude 5.5 mb earthquake at 32.7 km depth.

Depth32.7 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated11 August 2023Latest timestamp stored in this record

Published location

Where is 228 km SE 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.

56.481200, -149.147700

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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
us2000cn1j
Coordinates
56.4812, -149.1477
Network
us
Significance
468