QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0001vzr
USGS usp0001vzr
9 Jun 1983, 19:46
87 km S of Atka, Alaska
A magnitude 6.1 mw earthquake at 20.8 km depth.
Published location
Where is 87 km S 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.
51.414000, -174.111000
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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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Catalog fields and provenance
Event ID
usp0001vzr
Coordinates
51.414, -174.111
Network
us
Significance
572