QQuakeFacts
USGS us100030gd

8 Aug 2015, 20:09

75 km SW of Nikolski, Alaska

A magnitude 5 mb earthquake at 41 km depth.

Depth41 kmPublished hypocentral depth
Tsunami flagFlaggedUSGS catalog flag, not a current warning
Updated27 July 2023Latest timestamp stored in this record

Published location

Where is 75 km SW of Nikolski, 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.

52.444100, -169.616600

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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
us100030gd
Coordinates
52.4441, -169.6166
Network
us
Significance
385