Floridians pray that when Idalia hits the Gulf Coast it won’t join the long list of destructive Atlantic Ocean storms whose names started with “I.” Since 1955, 13 Atlantic storm names beginning with “I” have been retired, according to the National Weather Service. That happens when a storm’s death toll or destruction is so severe that using its name again would be insensitive, according to the World Meteorological Organization, which oversees storm naming. Some letter has to be No.