1964 Alaska earthquake

E831843
megathrust earthquake natural disaster tsunami-generating earthquake

The 1964 Alaska earthquake was a massive magnitude 9.2 megathrust quake—the second-largest ever recorded—that devastated parts of southern Alaska and triggered widespread tsunamis across the Pacific.

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Observed surface forms (2)

Surface form Occurrences
1964 Alaska earthquake and tsunami 2
1964 Good Friday earthquake 1

Statements (57)

Predicate Object
instanceOf megathrust earthquake ⓘ
natural disaster ⓘ
tsunami-generating earthquake ⓘ
affectedArea Anchorage NERFINISHED ⓘ
Kenai Peninsula NERFINISHED ⓘ
Kodiak Island NERFINISHED ⓘ
Prince William Sound region NERFINISHED ⓘ
Seward NERFINISHED ⓘ
Valdez NERFINISHED ⓘ
Whittier NERFINISHED ⓘ
southern Alaska NERFINISHED ⓘ
alsoKnownAs Good Friday Earthquake NERFINISHED ⓘ
Great Alaska Earthquake NERFINISHED ⓘ
casualties approximately 131 deaths ⓘ
category 1964 disasters in the United States ⓘ
Earthquakes in Alaska NERFINISHED ⓘ
Megathrust earthquakes ⓘ
Tsunamis in the United States ⓘ
caused land subsidence in coastal Alaska ⓘ
uplift of some coastal areas ⓘ
country United States of America ⓘ
surface form: United States
date 1964-03-27 ⓘ
dayOfWeek Friday ⓘ
deathsFromTsunami majority of total deaths ⓘ
durationOfStrongShaking approximately 4.5 minutes ⓘ
economicLosses hundreds of millions of 1964 U.S. dollars ⓘ
epicenterNear College Fjord NERFINISHED ⓘ
Valdez NERFINISHED ⓘ
ledTo changes in U.S. building codes ⓘ
creation of the National Earthquake Information Center ⓘ
locatedIn Alaska ⓘ
Prince William Sound NERFINISHED ⓘ
magnitude 9.2 ⓘ
maximumMercalliIntensity XI ⓘ
maximumMercalliIntensityDescription Extreme ⓘ
momentMagnitudeScale 9.2 ⓘ
notableFor extreme duration and magnitude ⓘ
widespread ground deformation ⓘ
occurredOnFault Aleutian Megathrust NERFINISHED ⓘ
occurredOnPlateBoundary Pacific Plate–North American Plate boundary NERFINISHED ⓘ
partOf history of Alaska ⓘ
rankByMagnitude second-largest earthquake ever instrumentally recorded ⓘ
ruptureType megathrust ⓘ
studiedBy United States Geological Survey NERFINISHED ⓘ
tectonicSetting subduction zone ⓘ
timeLocal 1964-03-27T17:36:00-09:00 ⓘ
timeUTC 1964-03-28T03:36:00Z ⓘ
triggered soil liquefaction ⓘ
submarine landslides ⓘ
tsunamis ⓘ
tsunamiAffectedArea British Columbia coast NERFINISHED ⓘ
Gulf of Alaska NERFINISHED ⓘ
Hawaii NERFINISHED ⓘ
Japan NERFINISHED ⓘ
U.S. West Coast NERFINISHED ⓘ
tsunamiMaximumRunupInAlaska approximately 67 meters ⓘ
tsunamiMaximumRunupLocation Shoup Bay, Alaska NERFINISHED ⓘ

Referenced by (6)

Full triples — surface form annotated when it differs from this entity's canonical label.

Pacific–North American plate boundary system → notableEarthquake → 1964 Alaska earthquake ⓘ
1949 Queen Charlotte Islands earthquake → followedBy → 1964 Alaska earthquake ⓘ
Kodiak Archipelago → historicalEvent → 1964 Alaska earthquake ⓘ
this entity surface form: 1964 Alaska earthquake and tsunami
Chenega → eventAffectedBy → 1964 Alaska earthquake ⓘ
Chenega Bay → affectedBy → 1964 Alaska earthquake ⓘ
this entity surface form: 1964 Good Friday earthquake
Pacific Tsunami Warning Center → significantEventMonitored → 1964 Alaska earthquake ⓘ
this entity surface form: 1964 Alaska earthquake and tsunami