QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem894960
USGS iscgem894960
18 Nov 1951, 09:35
89 km WSW of Nagqu, China
A magnitude 7.7 mw earthquake at 30 km depth.
Published location
Where is 89 km WSW of Nagqu, 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.
31.056000, 91.261000
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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
iscgem894960
Coordinates
31.056, 91.261
Network
iscgem
Significance
912