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USGS iscgem785351

5 Apr 1971, 10:04

114 km WNW of Nikolski, Alaska

A magnitude 6.1 mw earthquake at 147.6 km depth.

Depth147.6 kmPublished hypocentral depth

Tsunami flagNot flaggedUSGS catalog flag, not a current warning

Updated26 April 2022Latest timestamp stored in this record

Published location

Where is 114 km WNW 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.

53.175000, -170.528000

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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

43 km SE of Nikolski, Alaska

87 km ENE of Nikolski, Alaska

210 km WNW of Nikolski, Alaska

Fox Islands, Aleutian Islands, Alaska

75 km SE of Nikolski, Alaska

62 km ESE of Nikolski, Alaska

Catalog fields and provenance

Event ID

iscgem785351

Coordinates

53.175, -170.528

Network

iscgem

Significance

565