Doubling tropical cyclone risk to Hawaii possible

  • The roof of a home on Kaheka Road in Kapoho collapsed because of pounding surf as water rushed onto land during the landfall of Hurricane Iselle in August 2014. Tribune-Herald file photo

  • Power lines damaged by Hurricane Iselle stretch across the intersection of Paradise Road and 15 Road in August 2014 in Hawaiian Paradise Park. (Tribune-Herald/file photo)

  • Tropical Storms Iselle and Julio are seen in August 2014 as the storms approached the state. (Courtesy photo/NOAA)

Global warming will intensify landfalling tropical cyclones of a category three or higher in the Indian and Pacific Oceans, while suppressing the formation of weaker events. In Hawaii, model simulations show a doubling of the risk of landfalling tropical cyclones, if CO2 concentrations double.