QQuakeFacts
USGS us200030ar

27 Jul 2015, 05:55

89 km SSW of Nikolski, Alaska

A magnitude 5.7 mb earthquake at 27.8 km depth.

Depth27.8 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated27 July 2023Latest timestamp stored in this record

Published location

Where is 89 km SSW 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.

52.208000, -169.422300

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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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Catalog fields and provenance
Event ID
us200030ar
Coordinates
52.208, -169.4223
Network
us
Significance
500