Rubuta ci gaba don wannan sakin layi - An fara yin ruwa a fadin Hilo Bay a cikin shekaru goma na farko na karni na 20 kuma an kammala shi a 1929. A ranar 1 ga Afrilu, 1946, girgizar ƙasa mai ƙarfin maki 7.8
kusa da tsibirin Aleutian ya haifar da tsunami wanda ya buge Hilo 4.9 hours daga baya, ya kashe mutane 160. A sakamakon haka, aka kafa cibiyar da ke faɗakar da mutane game da guguwar tsunami a shekara ta 1949 don ta san inda guguwar take da kuma yi musu gargaɗi. Wannan tsunami kuma ya haifar da ƙarshen Haɗin Haɗin Haɗin Haɗin Hauwa'u, kuma a maimakon haka an gina titin Hawaii Belt Road a arewacin Hilo ta amfani da wasu tsoffin layin dogo.