QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us6000gg2x
USGS us6000gg2x

29 Dec 2021, 09:28

252 km NW of Attu Station, Alaska

A magnitude 5 mww earthquake at 10.8 km depth.

Depth10.8 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated22 December 2025Latest timestamp stored in this record

Published location

Where is 252 km NW of Attu Station, 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.

54.520900, 170.611000

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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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Nearby events with a similar magnitude

M 5

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M 5

140 km W of Attu Station, Alaska

M 5

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M 5

64 km WNW of Attu Station, Alaska

Catalog fields and provenance
Event ID
us6000gg2x
Coordinates
54.5209, 170.611
Network
us
Significance
385