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Participants in a conference highlighting the 50th Anniversary of the Fargo 1957 tornado held at North Dakota State University. This tornado prompted Dr. TedFujita to develop the Fujita Scale which is used to describe the strength ofthose storms. Dave McShane, MIC of the Grand Forks, NWSFO, is back row left. (Image credit: NOAA 200th Anniversary Postcards from the Field)