It will get far worse for Puerto Rico, but from the effects of anthropogenic climate change. Per the EPA in https://19january2017snapshot.epa.gov/sites/production/files/2016-09/documents/climate-change-pr.pdf
"Puerto Rico’s climate is changing. The Commonwealth has warmed by more than one degree (F) since the mid- 20th century, and the surrounding waters have warmed by nearly two degrees since 1901. The sea is rising about an inch every 15 years, and heavy rainstorms are becoming more severe. In the coming decades, rising temperatures are likely to increase storm damages, significantly harm coral reefs, and increase the frequency of unpleasantly hot days."

Future generations will place the blame for environmental calamities in PR and elsewhere in the US squarely on today's GOP run, corrupt, non-working Congress and Administration who chose to ignore the evidence that is obvious to the rest of the world.