QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us20009n7f
USGS us20009n7f
17 Jun 2017, 01:17
71 km SE of Atka, Alaska
A magnitude 5.4 mww earthquake at 29.5 km depth.
Published location
Where is 71 km SE of Atka, 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.
51.784900, -173.408600
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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
us20009n7f
Coordinates
51.7849, -173.4086
Network
us
Significance
449