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PORTAIL D'INFORMATION GÉOGRAPHIQUE

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  • Geographical distribution of weather catastrophes in the United States
  • Années 1949-2008 ; Catastrophe ; Cyclone tropical ; Distribution spatiale ; Etats-Unis ; Tempête ; Type de temps ; Vulnérabilité
  • Catastrophe ; Spatial distribution ; Storm ; Tropical cyclone ; United States of America ; Vulnerability ; Weather type
  • The distributions of catastrophes and their losses were examined for the three 20-year periods during 1949-2008. The first period, 1949-1968, had fewer catastrophes in most regions than the two later periods. In six regions, average losses per
  • catastrophe were highest in the period 1949-1968, while average losses were highest in 1989-2008 in the Central, Southeast, and Southwest regions. In all but the Southwest region, average storm losses were lowest in the 1969-1988 period. The results reflect
  • spatial and temporal differences in the atmospheric conditions that cause catastrophic storm events. The shift to much higher losses in the Southeast since 1990 reflects recent enhancement of intense tropical storms. The nation's eastern half also had its
  • greatest number of catastrophes in this recent period. There is also evidence that these recent increases are a result of enhanced societal vulnerability to storm damages.