QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000hy9a
USGS usp000hy9a
22 Mar 2011, 13:31
southern Mid-Atlantic Ridge
A magnitude 5.8 mww earthquake at 5 km depth.
Published location
Where is southern Mid-Atlantic 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.
-33.096000, -15.977000
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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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Catalog fields and provenance
Event ID
usp000hy9a
Coordinates
-33.096, -15.977
Network
us
Significance
518