QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000g412
USGS usp000g412
15 Apr 2008, 23:59
187 km W of Adak, Alaska
A magnitude 6.4 mwc earthquake at 11 km depth.
Published location
Where is 187 km W 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.
51.856000, -179.361000
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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
usp000g412
Coordinates
51.856, -179.361
Network
us
Significance
630