QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0004w6r
USGS usp0004w6r
3 Sept 1991, 10:05
southern East Pacific Rise
A magnitude 6.4 mwb earthquake at 8.5 km depth.
Published location
Where is southern East Pacific Rise?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-17.910000, -116.001000
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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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Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
usp0004w6r
Coordinates
-17.91, -116.001
Network
us
Significance
630