QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp00035xc
USGS usp00035xc
20 Jun 1987, 01:53
94 km S of Kurchatov, Kazakhstan
A magnitude 6.1 mb earthquake at 0 km depth.
Published location
Where is 94 km S of Kurchatov, Kazakhstan?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
49.913000, 78.735000
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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
usp00035xc
Coordinates
49.913, 78.735
Network
us
Significance
572