TY - JOUR AU - Nordhaus,William D. TI - The Economics of Hurricanes in the United States JF - National Bureau of Economic Research Working Paper Series VL - No. 12813 PY - 2006 Y2 - December 2006 UR - http://www.nber.org/papers/w12813 L1 - http://www.nber.org/papers/w12813.pdf N1 - Author contact info: William D. Nordhaus Yale University, Department of Economics 28 Hillhouse Avenue Box 208264 New Haven, CT 06520-8264 Tel: 203/432-3598 Fax: 203/432-5779 E-Mail: william.nordhaus@yale.edu AB - The year 2005 brought record numbers of hurricanes and storm damages to the United States. Was this a foretaste of increasingly destructive hurricanes in an era of global warming? This study examines the economic impacts of U.S. hurricanes. The major conclusions are the following: First, there appears to be an increase in the frequency and intensity of tropical cyclones in the North Atlantic. Second, there are substantial vulnerabilities to intense hurricanes in the Atlantic coastal United States. Damages appear to rise with the eighth power of maximum wind speed. Third, greenhouse warming is likely to lead to stronger hurricanes, but the evidence on hurricane frequency is unclear. We estimate that the average annual U.S. hurricane damages will increase by $8 billion at 2005 incomes (0.06 percent of GDP) due to global warming. However, this number may be underestimated by current storm models. Fourth, 2005 appears to have been a quadruple outlier, involving a record number of North Atlantic tropical cyclones, a large fraction of intense storms, a large fraction of the intense storms making landfall in the United States, and an intense storm hitting the most vulnerable high-value region in the country. ER -