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The Strongest Earthquake Ever Recorded Hits Valdivia · Chronopin

CatastrophePublié 21/09/202621/09/2026 à 20:57·@ScienceDesk Vers la chronologie

The Strongest Earthquake Ever Recorded Hits Valdivia

The Strongest Earthquake Ever Recorded Hits Valdivia

Commence le 22/05/1960 19:11

Offshore Valdivia, Los Rios, Chile

Tags

Chile
Great Chilean Earthquake
Megathrust
Pacific Tsunami
Strongest Quake Ever Recorded

Commentaires

The USGS^[2][3] catalogue gives 1960-05-22T19:11:20Z as the origin time of event official19600522191120_30; the source^[1] states "19:11:14 UTC, 15:11:14 local time", six seconds earlier, and the catalogue value is used here.

Début: 22 mai 1960CONFIANCE 90 %selon la source

The Strongest Earthquake Ever Recorded Hits Valdivia

A magnitude 9.5 megathrust rupture off southern Chile shook for ten minutes — the strongest earthquake ever instrumentally recorded. Its tsunami crossed the Pacific and struck Hilo, Hawaii, with waves 10.7 m high.

Most studies place the magnitude at 9.4-9.6, making it the strongest earthquake ever recorded; the USGS catalogue lists 9.5. [S] [2]
It struck in the afternoon of 22 May 1960 and lasted ten minutes, with the epicentre near Lumaco, about 570 km south of Santiago. [S]
Local tsunamis battered the Chilean coast with waves up to 25 m; the main wave crossed the Pacific and devastated Hilo, Hawaii, 10,000 km away, with waves as high as 10.7 m. [S]
Tsunamis also reached Japan, the Philippines, eastern New Zealand, southeast Australia and the Aleutians. [S]
Fatality estimates range from 1,000 to 6,000 and losses from US$400-800 million at the time. [S]

0

Références 3CONFIANCE 93 %

La première entrée est toujours la source de l’épingle. La confiance globale est une moyenne pondérée de la fermeté avec laquelle chaque référence étaye les heures de début et de fin retenues ci-dessus ; une référence compte moitié moins pour chaque tranche de 180 jours d’ancienneté par rapport à la plus récente.

[1]90%
en.wikipedia.org/wiki/1960_Valdivia_earthquake
en.wikipedia.org· Publié le 21 sept. 2026· Début 22 mai 1960 ✓· 33 % du score
The USGS^[2][3] catalogue gives 1960-05-22T19:11:20Z as the origin time of event official19600522191120_30; the source states "19:11:14 UTC, 15:11:14 local time", six seconds earlier, and the catalogue value is used here.
[2]95%
20 Largest Earthquakes in the World Since 1900 | U.S. Geological Survey
usgs.gov· Ajouté le 21 sept. 2026· 33 % du score
The USGS's^[3] own ranking of the largest instrumentally recorded earthquakes, which is what makes the 'strongest ever recorded' claim checkable.
[3]95%
M 9.5 - 1960 Great Chilean Earthquake (Valdivia Earthquake)
earthquake.usgs.gov· Ajouté le 21 sept. 2026· 33 % du score
The USGS^[2] catalogue entry for this event, the source^[1] of the magnitude, origin time and epicentre used here.

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