QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/ak00418t63mi
USGS ak00418t63mi
27 Jan 2004, 09:50
113 km SSE of Ugashik, Alaska
A magnitude 5.4 mw earthquake at 44.3 km depth.
Published location
Where is 113 km SSE of Ugashik, 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.
56.617900, -156.490800
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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
ak00418t63mi
Coordinates
56.6179, -156.4908
Network
ak
Significance
449