QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0002gvc
USGS usp0002gvc
17 Jul 1985, 20:31
109 km SE of Atka, Alaska
A magnitude 6.1 mw earthquake at 33 km depth.
Published location
Where is 109 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.
51.620000, -172.919000
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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
usp0002gvc
Coordinates
51.62, -172.919
Network
us
Significance
572