Climate risk and response: Physical hazards and socioeconomic impacts
Climate change is increasing the destructive power of flooding from extreme rain and from
rising seas and rivers. Many cities around the world are exposed. Strong winds during storms
and hurricanes can drive coastal flooding through storm surge. As hurricanes and storms
become more severe, surge height increases. Changing hurricane paths may shift risk to
new areas. Sea-level rise amplifies storm surge and brings in additional chronic threats of
tidal flooding. Pluvial and riverine flooding becomes more severe with increases in heavy
precipitation. Floods of different types can combine to create more severe events known as
compound flooding. With warming of 1.5 degrees Celsius, 11 percent of the global land area
is projected to experience a significant increase in flooding, while warming of 2.0 degrees
almost doubles the area at risk.
McKinsey Global Institute
McKinsey & Company
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