QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000bdsr
USGS usp000bdsr

4 Oct 2002, 15:16

46 km N of Nikolski, Alaska

A magnitude 5.1 mwc earthquake at 101.8 km depth.

Depth101.8 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated19 December 2025Latest timestamp stored in this record

Published location

Where is 46 km N 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.

53.354000, -168.794000

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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 5.1

43 km WSW of Nikolski, Alaska

M 5.1

63 km WSW of Nikolski, Alaska

M 5.1

107 km W of Nikolski, Alaska

M 5.1

85 km E of Nikolski, Alaska

M 5.1

25 km E of Saint George, Alaska

M 5.1

28 km E of Saint George, Alaska

Catalog fields and provenance
Event ID
usp000bdsr
Coordinates
53.354, -168.794
Network
us
Significance
400