QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem770771
USGS iscgem770771
21 Aug 1972, 07:23
289 km E of Poronaysk, Russia
A magnitude 6.2 mw earthquake at 586.9 km depth.
Published location
Where is 289 km E of Poronaysk, Russia?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
49.471000, 147.063000
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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
iscgem770771
Coordinates
49.471, 147.063
Network
iscgem
Significance
597