QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usb000gd5d
USGS usb000gd5d
21 Apr 2013, 14:48
113 km WSW of Adak, Alaska
A magnitude 5.6 mww earthquake at 44 km depth.
Published location
Where is 113 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.
51.663000, -178.239000
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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
usb000gd5d
Coordinates
51.663, -178.239
Network
us
Significance
482