QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us20008sd8
USGS us20008sd8

15 Mar 2017, 22:19

Rat Islands, Aleutian Islands, Alaska

A magnitude 5.6 mww earthquake at 19 km depth.

Depth19 kmPublished hypocentral depth
Tsunami flagFlaggedUSGS catalog flag, not a current warning
Updated7 August 2023Latest timestamp stored in this record

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.

51.078900, 179.076000

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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 5.6

Rat Islands, Aleutian Islands, Alaska

M 5.6

Rat Islands, Aleutian Islands, Alaska

M 5.6

275 km WSW of Adak, Alaska

M 5.6

278 km WSW of Adak, Alaska

M 5.6

291 km WSW of Adak, Alaska

M 5.6

250 km W of Adak, Alaska

Catalog fields and provenance
Event ID
us20008sd8
Coordinates
51.0789, 179.076
Network
us
Significance
482