Dee ihe na-aga n'ihu maka paragraf a - Irma nwetaghachiri ike n'ime oke ifufe nke 3 na 12:00 UTC na Septemba 3 ka ọ na-agagharị na ndịda ọdịda anyanwụ n'okpuru mmetụta nke ugwu ahụ. Malite n'isi ụtụtụ echi ya, anya ahụ malitere ibuwanye ibu ma na-adịwanye mma n'ọdịdị ya, ebe mkpụkọ mmiri miri emi gbara anya ahụ gburugburu na-adịwanye mma. Tụkwasị na nke ahụ, oké ifufe ahụ rutere n'ebe oké osimiri na-ekpo ọkụ karị ka ọ na-eru nso n'Agwaetiti Leeward. N'ihi nke a, Irma gafere oge ọzọ nke ịbawanye ngwa ngwa, na-eru ọkwa 4 na 18:00 UTC na Septemba 4 na ọkwa 5 na 12:00 UTC na Septemba 5. Oke ifufe ahụ dị oke ike toro n'ibu ma bụrụ nke na-adịwanye mma, na-enweta njirimara mgbanaka, na-ahụ mesovortices n'ime anya akọwapụtara nke ọma, na-egosi mmụba na-aga n'ihu nke oké ifufe ahụ. Ifufe na-aga n'ihu na 180 mph (285 km/h) na nso 18:00 UTC na Septemba 5 <unk> ọ bụ ezie na a na-enyocha ya na 185 mph (295 km/h). N'isi ụtụtụ nke Septemba 6, oke mmiri ahụ ruru nrụgide ikuku ya kacha nta nke 06:00 UTC, atụmatụ dabere na nchọpụta nrụgide mmiri na mmụba site na Barbuda na Saint Barthélemy. Nke a bụ nrụgide ikuku kasị ala e nwetụrụla n'Oké Osimiri Atlantic kemgbe oge Dean
n'afọ 2007.