Question: Last cat 4 hurricane to hit puerto rico?
Disambiguated questions and answers: question: Last cat 4 hurricane or stronger to hit puerto rico as of 2017?
Last storm that was a cat 4 hurricane and no stronger to hit puerto rico as of 2017?
answer: Hurricane Maria
Maria
1932 San Ciprian hurricane
Natural Questions answer: 1932 (from the Wikipedia article "List of Category 4 Atlantic hurricanes")