Cika wannan jumla: Ruwan tsunami ya mamaye gabashin, yankin gabar teku na Sōma bayan ambaliyar ruwa mai girman 9.0
2011 Tōhoku girgizar kasa da tsunami a gabar tekun a ranar 11 ga Maris, 2011. Tsunami ya kai kimanin kilomita 4 a cikin gida a Sōma; wuraren da ambaliyar ruwa ta hada da Sōma Port da Matsukawa-ura Bay, har zuwa babbar hanyar 6 Sōma Bypass. An auna tsunami ya kasance mita 9.3 ko mafi girma a Sōma.