QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem842636
USGS iscgem842636
19 Oct 1966, 09:01
north of Ascension Island
A magnitude 6.9 mw earthquake at 22.5 km depth.
Published location
Where is north of Ascension Island?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-1.631000, -15.416000
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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
iscgem842636
Coordinates
-1.631, -15.416
Network
iscgem
Significance
726