"Today, I am declaring a state of emergency to ensure Florida is fully prepared for Hurricane Dorian," DeSantis said in a statement.

"It's important for Floridians on the east coast to monitor this storm closely. Every Florida resident should have seven days of supplies, including food, water and medicine, and should have a plan in case of disaster."

The storm was expected to make landfall in populous eastern Puerto Rico later Wednesday before hitting Florida or Georgia by the end of the weekend.