1755 Lisbon earthquake

E18935

The 1755 Lisbon earthquake was a devastating seismic event that struck Portugal’s capital on All Saints’ Day, triggering massive fires and a tsunami, and profoundly influencing European philosophy, science, and urban planning.


Statements (52)
Predicate Object
instanceOf earthquake
historical event
natural disaster
aftershock multiple strong aftershocks during the same day
casualtiesEstimate tens of thousands
casualtiesEstimateInLisbon approximately 30,000–40,000 deaths
cityMostAffected Lisbon
countryAffected Kingdom of Portugal
date 1755-11-01
day All Saints’ Day
destroyedStructure Lisbon’s Baixa district
Lisbon’s royal archives
Royal Ribeira Palace
numerous churches and monasteries in Lisbon
economicImpact severe destruction of Lisbon’s economy
epicenterRegion near Lisbon, Portugal
feltInRegion British Isles
France
Germany
Iberian Peninsula
Italy
North Africa
Switzerland
governingMonarch Joseph I of Portugal
influenced European Enlightenment thought
Immanuel Kant’s writings on earthquakes
Voltaire’s novel "Candide"
Voltaire’s poem "Poème sur le désastre de Lisbonne"
debates on the problem of evil in philosophy
development of modern earthquake-resistant urban planning in Lisbon
early seismological studies in Europe
reconstruction of Lisbon’s Baixa Pombalina
theological discussions on divine providence
keyPoliticalFigure Sebastião José de Carvalho e Melo, Marquis of Pombal
legacy considered one of the deadliest earthquakes in European history
milestone event in the history of seismology
turning point in Lisbon’s urban development
magnitudeEstimate 8.5–9.0 Mw
maximumIntensity XI (Extreme) on the Mercalli intensity scale
reconstructionFeature Pombaline cage anti-seismic building design
reconstructionPlan grid-based layout for central Lisbon
responseLedBy Marquis of Pombal
timeOfDay around 09:40 local time
triggeredEvent Lisbon fire
tsunami along the Portuguese coast
tsunami in Morocco
tsunami in southwestern Spain
tsunami in the Atlantic Ocean
tsunami observed in the British Isles
tsunami observed in the Caribbean
tsunamiArrivalTimeInLisbon about 20–40 minutes after the main shock
tsunamiWaveHeightInLisbonHarbor approximately 5–15 meters


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