QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem788547
USGS iscgem788547
25 Jan 1971, 17:08
92 km WSW of Adak, Alaska
A magnitude 6.4 mw earthquake at 40 km depth.
Published location
Where is 92 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.
51.449000, -177.778000
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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
iscgem788547
Coordinates
51.449, -177.778
Network
iscgem
Significance
630