STORY: Crashing waves could be seen at a Key West pier, as people walked around waist-deep in stormy waters while taking selfies.
While a separate video posted on social media late on Tuesday showed homes and cars already flooded on the island.
According to the U.S. National Hurricane Center (NHC) on Wednesday, Hurricane Ian was leading to storm surge flooding across the lower Florida Keys.
More than 2.5 million Floridians were under evacuation orders or warnings with the sprawling storm on track to make landfall as a potentially deadly Category 4 hurricane Wednesday evening, somewhere along Florida's Gulf Coast.
It had pummeled Cuba on Tuesday and left the entire Caribbean island nation without power.