QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem858982
USGS iscgem858982
30 Mar 1965, 03:27
Rat Islands, Aleutian Islands, Alaska
A magnitude 7.6 mw earthquake at 23.5 km depth.
Published location
Where is Rat Islands, Aleutian Islands, Alaska?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
50.286000, 177.877000
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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
iscgem858982
Coordinates
50.286, 177.877
Network
iscgem
Significance
889