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USGS iscgem913146

20 May 1918, 15:36

central Mid-Atlantic Ridge

A magnitude 7.3 mw earthquake at 15 km depth.

Depth15 kmPublished hypocentral depth

Tsunami flagNot flaggedUSGS catalog flag, not a current warning

Updated25 April 2022Latest timestamp stored in this record

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.

7.409000, -34.906000

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Map data © OpenStreetMap contributors

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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Nearby events with a similar magnitude

central Mid-Atlantic Ridge

central Mid-Atlantic Ridge

central Mid-Atlantic Ridge

central Mid-Atlantic Ridge

central Mid-Atlantic Ridge

central Mid-Atlantic Ridge

Catalog fields and provenance

Event ID

iscgem913146

Coordinates

7.409, -34.906

Network

iscgem

Significance

811