QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem906951
USGS iscgem906951
18 Aug 1931, 15:21
148 km ESE of Altay, China
A magnitude 7.3 mw earthquake at 10 km depth.
Published location
Where is 148 km ESE of Altay, China?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
47.254000, 89.898000
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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
iscgem906951
Coordinates
47.254, 89.898
Network
iscgem
Significance
809