Skip to content

USGS iscgem898087

20 Oct 1947, 02:43

23 km ENE of Ferry, Alaska

A magnitude 6.4 mw earthquake at 20 km depth.

Depth20 kmPublished hypocentral depth

Tsunami flagNot flaggedUSGS catalog flag, not a current warning

Updated26 April 2022Latest timestamp stored in this record

Published location

Where is 23 km ENE of Ferry, 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.

64.119000, -148.702000

Open the interactive map ↗

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.

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

15 km S of Rampart, Alaska

Mount McKinley (Denali) area, Alaska

53 km ENE of Cantwell, Alaska

49 km WNW of Stevens Village, Alaska

35 km E of Healy, Alaska

38 km SW of Denali National Park, Alaska

Catalog fields and provenance

Event ID

iscgem898087

Coordinates

64.119, -148.702

Network

iscgem

Significance

638