Dee ihe na-aga n'ihu maka paragraf a - Irma setịpụrụ ọtụtụ ihe ndekọ maka ike, karịsịa na mpaghara ọwụwa anyanwụ, oge ejiri ike dị otú ahụ, na ike ya mgbe ọ na-ada. Mgbe Irma ruru ogo 5 na ifufe nke 175 mph (280 km/h) na 11:45 UTC na Septemba 5 na 57.7°W, ọ ghọrọ oke ifufe Atlantic nke ọwụwa anyanwụ nke ike a na ndekọ, na-akarị Oké ifufe David nke 1979. Ka ọ na-erule elekere 00:15 UTC na Septemba 6, Irma ruru oke ike ya na ifufe na nrụgide kacha nta nke. Nke a jikọtara ya na Hurricane Mitch nke 1998 na Hurricane Rita nke 2005 dị ka ajọ ifufe Atlantic nke isii kachasị ike site na ọsọ nke ifufe. Ọ bụ naanị ajọ ifufe ise ndị ọzọ na Atlantic ka e dekọrọ na ifufe dị elu karịa Irma: Hurricane Allen nke 1980, nke nwere oke ifufe nke 190 mph (305 km / h), na 1935 Labor Day hurricane, Hurricane Gilbert nke 1988, Hurricane Wilma nke 2005, na Hurricane Dorian nke 2019, ha niile nwere oke ifufe nke 185 mph (295 km / h). N'oge ahụ, Irma bụkwa oke ifufe kachasị ike edekọtara na Atlantic Ocean na mpụga Oké Osimiri Caribbean na Ọwara Oké Osimiri Mexico; mgbe e mesịrị, Oké Osimiri Dorian gafere ya, ọ bụkwa oke ifufe Atlantic kachasị ike kemgbe Wilma n'ihe gbasara oke ifufe na-aga n'ihu, na nke kachasị ike n'ihe gbasara nrụgide kemgbe Dean
n'afọ 2007. Na mgbakwunye, Irma nwetara otu n'ime oge kachasị ogologo nke ike ikuku nke 5, na nke atọ kachasị elu akwakọbara ike cyclone (ACE) maka oke ifufe na oke osimiri Atlantic, na uru nke 64.9 nkeji. Naanị ajọ ifufe San Ciriaco nke 1899 na ajọ ifufe Ivan na 2004 nwetara uru dị elu.