QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usc000twdd
USGS usc000twdd
7 Mar 2015, 13:18
198 km SSE of Atka, Alaska
A magnitude 5.6 mww earthquake at 10 km depth.
Published location
Where is 198 km SSE of Atka, 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.
50.507500, -173.290000
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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
usc000twdd
Coordinates
50.5075, -173.29
Network
us
Significance
482