QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/official19640328033616_30
USGS official19640328033616_30

28 Mar 1964, 04:36

The 1964 Prince William Sound, Alaska Earthquake

A magnitude 9.2 mw earthquake at 25 km depth.

Depth25 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated15 July 2026Latest timestamp stored in this record

Published location

Where is The 1964 Prince William Sound, Alaska Earthquake?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

60.908000, -147.339000

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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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Continue exploring

Nearby events with a similar magnitude

M 7.9

200 km WSW of Yakutat, Alaska

M 7

52 km NE of Chenega, Alaska

M 6.9

Gulf of Alaska

M 6.9

283 km SW of Yakutat, Alaska

M 6.65

Prince William Sound, Alaska

M 6.65

163 km W of Yakutat, Alaska

Catalog fields and provenance
Event ID
official19640328033616_30
Coordinates
60.908, -147.339
Network
official
Significance
1720