Cika wannan jumla:
1900 Guguwar Galveston, bala'i na halitta mafi muni da ya afka wa Amurka, ya kai kololuwar da ta dace da guguwar zamani ta rukuni na 4. Sauran misalai na guguwa da suka kai matsayi na 4 da kuma yin ƙasa a wannan ƙarfin sun haɗa da: Flora (1963), Cleo (1964), Betsy (1965), Carmen (1974), Frederic (1979), Joan (1988), Iniki (1992), Luis (1995), Iris (2001), Charley (2004), Dennis (2005), Gustav (2008), Ike (2008), Joaquin (2015), Harvey (2017), Laura (2020), Eta (2020), Iota (2020) da Ida (2021).