Rubuta ci gaba don wannan sakin layi - Irma ya kafa rikodin da yawa don ƙarfi, musamman a gabas ta gabas, lokacin da aka kashe a irin wannan ƙarfin, da ƙarfinsa a kan ƙasa. Lokacin da Irma ya kai Matsayi na 5 tare da iskar 175 mph (280 km / h) a 11:45 UTC a ranar 5 ga Satumba a 57.7 ° W, ya zama guguwar Atlantic mafi gabashin wannan ƙarfin a cikin rikodin, wanda ya zarce Guguwar David na 1979. Da 00:15 UTC a ranar 6 ga Satumba, Irma ya kai kololuwar ƙarfi tare da iska mai ƙarfi da ƙananan matsin lamba na. Wannan ya danganta shi da Hurricane Mitch na 1998 da Hurricane Rita na 2005 a matsayin na shida mai karfi na Atlantic hurricane ta hanyar saurin iska. Sauran guguwar Atlantic guda biyar ne kawai aka yi rikodin tare da saurin iska sama da Irma: Guguwar Allen ta 1980, wacce ke da iskar da ta fi ƙarfin 190 mph (305 km / h), da guguwar Ranar Kwadago ta 1935, Guguwar Gilbert ta 1988, Guguwar Wilma ta 2005, da Guguwar Dorian ta 2019, dukkansu suna da iskar iska mai karfin 185 mph (295 km / h). A wancan lokacin, Irma ita ce guguwar da ta fi karfi da aka taɓa yin rikodin ta a Tekun Atlantika a wajen Tekun Caribbean da Tekun Mexico; daga baya guguwar Dorian ta zarce ta, kuma ita ce guguwar Atlantic mafi ƙarfi tun daga Wilma dangane da iyakar iskar da ke ci gaba, kuma mafi tsananin dangane da matsin lamba tun daga Dean
a shekara ta 2007. Bugu da ƙari, Irma ya sami ɗayan mafi tsayi na ƙarfin iska mai ƙarfi na 5, da kuma na uku mafi girman adadin kuzari na kuzari (ACE) ga guguwa mai zafi a cikin kwarin Atlantic, tare da darajar raka'a 64.9. Kawai guguwar San Ciriaco ta 1899 da guguwar Ivan a 2004 sun sami ƙimar da ta fi haka.