QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem912159
USGS iscgem912159
6 Feb 1921, 04:27
39 km WNW of Severo-Kuril’sk, Russia
A magnitude 6.4 mw earthquake at 35 km depth.
Published location
Where is 39 km WNW of Severo-Kuril’sk, 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.
50.850000, 155.640000
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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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Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
iscgem912159
Coordinates
50.85, 155.64
Network
iscgem
Significance
622