Data last collected:
QuakeFactsEvidence report · prepared 19 October 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.
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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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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Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
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Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
official19640328033616_30
Coordinates
60.908, -147.339
Network
official
Significance
1720
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Questions this evidence can answer
01What exactly is this record?
Use the name, place, date and identifiers above to confirm that you have the right The 1964 Prince William Sound, Alaska Earthquake earthquake: magnitude 9.2 and depth | QuakeFacts record.
02What does the evidence establish?
Read the reported values with their units, coverage dates and source notes. Keep observed facts separate from estimates or interpretation.
03What should I verify next?
Follow the primary-source links and check the limitations before using this evidence for a decision, comparison or citation.
A closer look at The 1964 Prince William Sound, Alaska Earthquake
Depth in another unit
The recorded event depth of 25 km is approximately 15.53 miles below the source reference surface. Depth alone does not describe damage or local hazard.
Interpreting the recorded coordinates
The published position for The 1964 Prince William Sound, Alaska Earthquake is 60.908° north and 147.339° west. This expresses the source coordinates in hemispheres; it does not establish an entrance, public access or a safe route.