QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgemsup912759
USGS iscgemsup912759
16 Apr 1919, 04:14
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.
-38.957000, -17.241000
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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
iscgemsup912759
Coordinates
-38.957, -17.241
Network
iscgemsup
Significance
613