National Climatic Data Center U.S text Asheville, NC U.S Dep.of Commerce, National Oceanic and Atmospheric Administration, National Environmental Satellite Data and Information Service, National Climatic Data Center 2000 monographic Neal Lott, Sam McCown, Tom Ross. Title from title screen (view on Nov.19,2008). Tornadoes United States Statistics Severe storms United States Tornadoes United States Measurement C55.287/62:99-02/2000 C55.287/62:99-02/2000 20160527183548.0 299206