Data last collected:
QuakeFactsEvidence report · prepared 19 October 2026https://quakes99.com/entity/usp000an99
USGS usp000an99
29 Aug 2001, 23:47
southeast Indian Ridge
A magnitude 5.6 mwc earthquake at 10 km depth.
Published location
Where is southeast 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.
-47.426000, 100.017000
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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
usp000an99
Coordinates
-47.426, 100.017
Network
us
Significance
482
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Questions this evidence can answer
01What exactly is this record?
Use the name, place, date and identifiers above to confirm that you have the right southeast Indian Ridge earthquake: magnitude 5.6 and depth | QuakeFacts record.
02What does the evidence establish?
Read the reported values with their units, coverage dates and source notes. Keep observed facts separate from estimates or interpretation.
03What should I verify next?
Follow the primary-source links and check the limitations before using this evidence for a decision, comparison or citation.
A closer look at southeast Indian Ridge
Depth in another unit
The recorded event depth of 10 km is approximately 6.21 miles below the source reference surface. Depth alone does not describe damage or local hazard.
Interpreting the recorded coordinates
The published position for southeast Indian Ridge is 47.426° south and 100.017° east. This expresses the source coordinates in hemispheres; it does not establish an entrance, public access or a safe route.