QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us10004x57
USGS us10004x57
13 Mar 2016, 04:19
74 km SSE of Atka, Alaska
A magnitude 5.4 mww earthquake at 10 km depth.
Published location
Where is 74 km SSE 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.
51.552400, -173.882700
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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
us10004x57
Coordinates
51.5524, -173.8827
Network
us
Significance
449