Hurricane Katrina storm surge delineation: implications for future storm surge forecasts and warnings |
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Authors: | Ginni Melton Melanie Gall Jerry T Mitchell Susan L Cutter |
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Institution: | (1) University of South Carolina, Columbia, SC, USA; |
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Abstract: | The storm surge in coastal Mississippi caused by Hurricane Katrina was unprecedented in the region. The height and geographic
extent of the storm surge came as a surprise to many and exceeded pre-impact surge scenarios based on SLOSH models that were
the basis for emergency preparedness and local land use decision-making. This paper explores the spatial accuracy of three
interpolated storm surge surfaces derived from post-event reconnaissance data by comparing the interpolation results to a
specific SLOSH run. The findings are used to suggest improvements in the calibration of existing pre-event storm surge models
such as SLOSH. Finally, the paper provides some suggestions on an optimal surge forecast map that could enhance the communication
of storm surge risks to the public. |
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