ClimateandCatastropheInsight12TableofContentsTableofContentsExecutiveSummary3ForewordbyGregCase,CEO,Aon5HowThisReportHelpsOrganizationsThrive6NaturalDisasterEventsandLossTrends8GlobalEconomicLossesAboveAverage,DrivenbyWeather-RelatedDisasters9GlobalInsuredLossesExceed$145BillionintheSixthCostliestYearonRecord15GlobalFatalitiesAmongtheLowestin30Years23RegionalCatastropheReview26UnitedStates27Americas(non-U.S.)29EMEA(Europe,MiddleEastandAfrica)31APAC(AsiaandPacific)33WhatWeLearned35AtlanticHurricanesHighlightUnderinsuranceandtheImportanceofAdaptation36GlobalFloodEventsRevealedContrastsinPreparednessLevel40PopulationGrowthandUrbanizationContinuetoDriveIncreasingLosses43SevereConvectiveStormsandShingleRoofs:AGrowingChallenge46HistoricYearforCanadian(Re)insurance48CriticalClimateResilienceConsiderationsforInfrastructureAssets51EvacuationPlanningCriticalforLimitingHumanCasualties53TheLinksBetweenClimateandCatastrophes542024:TheHottestYearonRecordExceeds1.5°CabovethePre-IndustrialLevels55ProlongedExtremeHeatwavesIncreasinglyAffectHumanHealth57Observing2023–2024EventsThroughClimateOscillations58TropicalCycloneActivityin202460AtlanticHurricaneSeasonEndsasHyperactiveAfteraSlowStart63ClimateAttributionStudiesEmphasizetheRoleofAdaptation65Appendices66AppendixA:2024GlobalDisasters67AppendixB:Long-TermNaturalDisasterTrends90AppendixC:HistoricalNaturalDisasterEvents92AppendixD:GlobalTropicalCycloneActivity102AppendixE:UnitedStatesStormReports103AppendixF:GlobalEarthquakes104AppendixG:UnitedStatesWildfires105AdditionalReportDetails106References1073ExecutiveSummary3EconomicLossInsuredLossHurricaneHelene,CostliestEventWarmestYearonRecord$368B14percentabovethe21stcenturyaverage$145B54percentabovethe21stcenturyaverage243fatalitiesinthethird-deadliestU.S.hurricaneofthe21stcentury,causing$75billionineconomiclosses1.55°C/2.79°Ftemperatureanomalyin2024comparedtopre-industrialperiod(1850–1900),markingthewarmestyearonrecord(WMO)54billion-dollareconomiclossevents,abovetheaverageof4434billion-dollarinsuredlossevents,abovetheaverageof16Spain,Brazil,UAE,Vietnamrecordedtheircostliestinsuranceevents15consecutivemonthsofrecord-highglobaltemperaturesbetweenJuly2023andAugust202460%globalprotectiongap78%ofglobalinsuredlosseswererecordedintheUnitedStates20countriesandterritoriesthatrecordedtheirhighesttemperaturesTropicalCycloneperilwiththehighesteconomiclosses;severeconvectivestormswasthemostdamagingperilforinsurers$61BglobalinsuredlossesfromSCS,thesecond-highestonrecord18,100fatalitiesdrivenbyheatwavesandfloods,lowestsince1992$145B$368BTotallossesCoveredbyinsurance4ExecutiveSummary4EconomicLossesWereAboveAverageDuetoWeatherDisastersGlobalnaturaldisastersin2024resultedineconomiclossesreachingatleast$368billionandwereprimarilydrivenbytropicalcyclones,severeconvectivestormsandfloods.ThesinglemostdevastatingeventwasHurricaneHelene,whichisestimatedtohavecausedapproximately$75billionindirectdamage,mainlyduetoinlandandcoastalflooding.Globallossessurpassed$300billionfortheninthtimeinarowandwere14percenthigherthanthelong-termaverage.Someterritoriessufferedadisproportionateimpactrelativetotheireconomicoutput,suchtheislandofMayottefromCycloneChido.2024wastheSixth-CostliestYearforInsurersThecostliesteventsforinsurersweretwoAtlantichurricanes—HeleneandMilton—whichareexpectedtoresultinlossesofapproximately$37.5...
