1899 San Ciriaco hurricane
Hurricane San Ciriaco set many records on its path. Resulting in at least 3,369 deaths in Puerto Rico, the storm was the deadliest hurricane to hit the island and the strongest at the time, until the Hurricane San Felipe Segundo made landfall in 1928 as a Category 5 hurricane. It was also among the deadliest Atlantic hurricanes ever recorded.
Great Hurricane of 1780
The storm was named the "San Calixto" hurricane in Puerto Rico because the eye of the cyclone made landfall there on October 14, the Christian feast day of Pope Callixtus I, venerated by the Roman Catholic Church as Saint Callixtus ("San Calixto" in Spanish). Since European arrival in the Americas in 1492, all storms and hurricanes were named after the name of the saint of the day the storm hit Puerto Rico; for example, the 1867 San Narciso hurricane, the 1899 San Ciriaco hurricane, the 1928 San Felipe hurricane, and the 1932 San Ciprian hurricane were also named after the feast day on which they occurred.