QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000d1e5
USGS usp000d1e5
4 Aug 2004, 04:46
Southwest Indian Ridge
A magnitude 5.3 mwc earthquake at 10 km depth.
Published location
Where is Southwest Indian Ridge?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-40.779000, 43.201000
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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.
Need a current safety answer?
Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
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Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
usp000d1e5
Coordinates
-40.779, 43.201
Network
us
Significance
432