QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem610548653
USGS iscgem610548653
20 Jul 1906, 11:18
central Mid-Atlantic Ridge
A magnitude 6.4 mw earthquake at 10 km depth.
Published location
Where is central 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.
7.714000, -37.482000
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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
iscgem610548653
Coordinates
7.714, -37.482
Network
iscgem
Significance
636