QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem908198
USGS iscgem908198
7 Jul 1929, 22:23
88 km WSW of Adak, Alaska
A magnitude 7.3 mw earthquake at 35 km depth.
Published location
Where is 88 km WSW 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.
51.479000, -177.746000
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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
iscgem908198
Coordinates
51.479, -177.746
Network
iscgem
Significance
827