QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem905874
USGS iscgem905874

14 Oct 1933, 22:19

Unimak Island region, Alaska

A magnitude 6.2 mw earthquake at 25 km depth.

Depth25 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated25 April 2022Latest timestamp stored in this record

Published location

Where is Unimak Island region, 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.

53.780000, -163.954000

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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

M 6.17

156 km SE of Akutan, Alaska

M 6.16

36 km ESE of Unalaska, Alaska

M 6.18

136 km SE of Akutan, Alaska

M 6.15

57 km SE of Unalaska, Alaska

M 6.19

130 km S of Unalaska, Alaska

M 6.2

172 km SSE of False Pass, Alaska

Catalog fields and provenance
Event ID
iscgem905874
Coordinates
53.78, -163.954
Network
iscgem
Significance
586