QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000fzkj
USGS usp000fzkj
21 Feb 2008, 23:52
111 km SSW of Adak, Alaska
A magnitude 5.4 mwc earthquake at 15.6 km depth.
Published location
Where is 111 km SSW of Adak, 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.
50.925000, -177.158000
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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
usp000fzkj
Coordinates
50.925, -177.158
Network
us
Significance
449