QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgemsup910398
USGS iscgemsup910398
7 Mar 1925, 18:14
southern Mid-Atlantic Ridge
A magnitude 6.3 mw 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.
-55.342000, -5.179000
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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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Catalog fields and provenance
Event ID
iscgemsup910398
Coordinates
-55.342, -5.179
Network
iscgemsup
Significance
609