QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000547a
USGS usp000547a
13 Mar 1992, 16:01
170 km WNW of Adak, Alaska
A magnitude 6.4 mwb earthquake at 197.4 km depth.
Published location
Where is 170 km WNW 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.
52.451000, -178.945000
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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
usp000547a
Coordinates
52.451, -178.945
Network
us
Significance
630