QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0000qxw
USGS usp0000qxw
7 Oct 1977, 13:10
161 km S of Sumbawa Besar, Indonesia
A magnitude 6.3 ms earthquake at 33 km depth.
Published location
Where is 161 km S of Sumbawa Besar, Indonesia?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-9.952000, 117.319000
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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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Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
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Catalog fields and provenance
Event ID
usp0000qxw
Coordinates
-9.952, 117.319
Network
us
Significance
611