QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem783841
USGS iscgem783841
26 Jun 1971, 20:27
southwest of Sumatra, Indonesia
A magnitude 6.4 mw earthquake at 21 km depth.
Published location
Where is southwest of Sumatra, 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.
-5.180000, 96.844000
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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
iscgem783841
Coordinates
-5.18, 96.844
Network
iscgem
Significance
630