QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem887426
USGS iscgem887426
25 Oct 1957, 10:03
39 km SE of Severo-Kuril’sk, Russia
A magnitude 6.4 mw earthquake at 50.1 km depth.
Published location
Where is 39 km SE 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.
50.388000, 156.455000
Open the interactive map ↗Map data © OpenStreetMap contributors
What the numbers mean
Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.
Need a current safety answer?
Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
Continue exploring
Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
iscgem887426
Coordinates
50.388, 156.455
Network
iscgem
Significance
630