QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem886116
USGS iscgem886116
12 Mar 1957, 07:28
79 km SSE of Atka, Alaska
A magnitude 6.5 mw earthquake at 25 km depth.
Published location
Where is 79 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.
51.587000, -173.589000
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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
iscgem886116
Coordinates
51.587, -173.589
Network
iscgem
Significance
652