The authors wish to thank Mr. Tim Marshall (Haag Engineering) for supplying detailed maps of his Joplin tornado damage survey. The authors appreciate critical comments and productive discussions provided by Drs. David Changnon and Richard Greene (NIU). We also thank the efforts of Mr. Donald Heins (NIU alumnus), who assisted in the development of early versions of the GIS gridding routine. Finally, we appreciate the thoughtful reviews provided by the anonymous referees.
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Standard protocol for assessing accuracy and reliability of modeled data is to compare those data against “truth” data. In the absence of truth data, we are limited to assessing consistency by comparing source data at standard census enumerations. Ideally, we would verify the modeled data against finer-scale Census data. Unfortunately, the Census is unable to conduct special tabulations based on geographic coordinates, or for user-defined areas smaller than blocks.