QQuakeFacts
USGS us2000akeb

11 Sept 2017, 22:52

125 km WSW of Adak, Alaska

A magnitude 5.1 mww earthquake at 54.7 km depth.

Depth54.7 kmPublished hypocentral depth
Tsunami flagFlaggedUSGS catalog flag, not a current warning
Updated9 August 2023Latest timestamp stored in this record

Published location

Where is 125 km WSW of Adak, 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.

51.523500, -178.359300

Open the interactive map ↗

What the numbers mean

Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.

Need a current safety answer?

Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.

Open the USGS event →

Continue exploring

Nearby events with a similar magnitude

Catalog fields and provenance
Event ID
us2000akeb
Coordinates
51.5235, -178.3593
Network
us
Significance
400