Dee ihe ọzọ dị na paragraf a - N'October 11, 1918, ala ọma jijiji mere
nke mere, nke nwere ihe ruru 7.3 na Richter, nke a na-esochi tsunami ruru 6.1 mita (20 ft) n'ịdị elu. Ebe ala ọma jijiji ahụ mere bụ n'ebe ugwu ọdịda anyanwụ Aguadilla n'ebe a na-akpọ Mona Passage (nke dị n'agbata Puerto Rico na Dominican Republic). Ala ọma jijiji a kpatara nnukwu mbibi na ọnwụ na Mayagüez, na obere mbibi n'akụkụ ụsọ oké osimiri ọdịda anyanwụ. Ala nọ na-ama jijiji ruo ọtụtụ izu. Ihe dị ka mmadụ 116 nwụrụ n'ala ọma jijiji ahụ na mmadụ 40 nwụrụ n'ikuku tsunami ahụ.