Rubuta ci gaba don wannan sakin layi - A ranar 11 ga Oktoba, 1918, babbar girgizar kasa ta afkawa gabar yammacin Puerto Rico
wanda ya haifar da tsunami. Girgizar kasa ta 1918 ta haifar da tsohuwar kuskuren hagu-gefe kusa da Mona Passage. A shekara ta 1953, girgizar ƙasa ta shafi Santo Domingo, Dominican Republic. Yankin subduction na ainihi (Puerto Rico Trench) bai fashe ba a cikin shekaru sama da 200, wanda shine babban abin damuwa ga masana ilimin ƙasa, saboda sun yi imanin cewa yana iya zama saboda babban abin da ya faru.