QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp00029b1
USGS usp00029b1
23 Nov 1984, 04:45
southwest of Sumatra, Indonesia
A magnitude 6.4 mw earthquake at 33 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.
-7.993000, 102.255000
Open the interactive map ↗Map data © OpenStreetMap contributors
What the numbers mean
Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.
Need a current safety answer?
Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
Continue exploring
Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
usp00029b1
Coordinates
-7.993, 102.255
Network
us
Significance
630