QuakeFactsEvidence report · prepared 3 September 2026https://quakes99.com/entity/usb000iv42
USGS usb000iv42
4 Aug 2013, 02:28
southern Mid-Atlantic Ridge
A magnitude 5.4 mb earthquake at 10 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.
-48.951400, -8.647300
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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
usb000iv42
Coordinates
-48.9514, -8.6473
Network
us
Significance
449