QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us6000gg09
USGS us6000gg09
29 Dec 2021, 03:57
258 km NW of Attu Station, Alaska
A magnitude 5.6 mww earthquake at 10 km depth.
Published location
Where is 258 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.
54.622000, 170.651400
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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
us6000gg09
Coordinates
54.622, 170.6514
Network
us
Significance
482