QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem610548675
USGS iscgem610548675
23 Dec 1906, 07:01
135 km SW of Nikolski, Alaska
A magnitude 6.6 mw earthquake at 35 km depth.
Published location
Where is 135 km SW of Nikolski, 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.
51.986000, -170.093000
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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
iscgem610548675
Coordinates
51.986, -170.093
Network
iscgem
Significance
664