Flood risk modelling for the United States - Willis Research Network

Summary and Conclusions
* Tropical cyclones control extreme flooding in much of the eastern
US; there is pronounced spatial heterogeneity in tropical cyclone
flooding.
* Mountainous terrain plays a central role in determining the spatial
variation of flood hazards in the eastern US.
* Thunderstorm systems in mountainous terrain of the eastern US
have produced some of the largest rainfall accumulations in the world
for time intervals less than 6 hours.
* Envelope curve of flood peak magnitudes for the eastern US
includes numerous urban floods with relatively short return intervals.
•“Climatology” of urban floods is closely linked to the climatology of
warm season thunderstorm systems.
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