QQuakeFacts
USGS iscgem848573

20 Apr 1966, 17:42

4 km NE of Kasumkent, Russia

A magnitude 6 mw earthquake at 25.9 km depth.

Depth25.9 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated19 December 2025Latest timestamp stored in this record

Published location

Where is 4 km NE of Kasumkent, 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.

41.707000, 48.179000

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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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Catalog fields and provenance
Event ID
iscgem848573
Coordinates
41.707, 48.179
Network
iscgem
Significance
554