QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp00012m8
USGS usp00012m8
25 Aug 1979, 09:44
northern Mid-Atlantic Ridge
A magnitude 6.6 ms earthquake at 10 km depth.
Published location
Where is northern 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.
10.731000, -41.688000
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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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Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
usp00012m8
Coordinates
10.731, -41.688
Network
us
Significance
670