as Tornado Shelters: Fallout from the May 3, 1999 TornadoOutbreak (页面存档备份,存于互联网档案馆) An F3 tornado hit Acht (Eifel, Germany) on June 10th 2003 龙卷风与风暴研究组织
美国人口调查局. [2011-05-14]. (原始内容存档于2013-09-11). South reels from deadly tornadooutbreak; 2-year-old among the 22 dead in Mississippi. ABC7 New York. 2023-03-27