Scott said Saturday night that the outages expected to grow as Irma moves closer to the state. Earlier on Monday, a 66-year-old man in Worth County was trapped beneath debris when a shed collapsed while he was on the roof.
Irma is a Tropical Storm with maximum sustained winds of 65 miles per hour with higher gusts. Most of the outages are in Savannah, Ga., and the surrounding areas.
Hurricane-force winds extend outward up to 60 miles mainly to the west of the center, and tropical-storm-force winds extend outward up to 415 miles.
The path of the storm, tracking the west coast of Florida, meant it might be less destructive than it would otherwise have been, Trump said, noting the next five or six hours would be critical.
The storm continued to cause heavy damage in northern Florida cities inundating several areas as it slowly ebbed away. Officials closed major bridges.
Irma hit the Florida Keys on Sunday, flooding streets, spawning tornadoes, knocking out power to more than 3 million people across the state and snapping massive construction cranes over the Miami skyline. Its center hit portions of the Keys on Sunday but missed Miami and Naples, then skirted Tampa as the storm slowed.
One of Florida's primary public utility companies said Saturday that it is preparing to deal with the largest number of power outages in USA history. Twitter user Killarney Knight posted a video showing downtown Miami flooded with water.
Irma, which decimated the Caribbean as a top-tier Category 5 hurricane before losing strength after repeated landfalls in the continental USA, was downgraded to a tropical storm Monday.
Trump said the U.S. Coast Guard had been heroic and that the Federal Emergency Management Agency was doing a good job to help coordinate the response with states.
"Let's show Irma that we shoot first", the description read. "I don't have any numbers on fatalities at this point".
The phenomenon occurred on the Bahamas' Long Island, where residents took to social media to express shock that the ocean water appeared to be "missing". It will last until Monday morning.
Another 54,000 people were directed to leave coastal areas in Georgia, where storm surges up to 6 feet could drench cities such as Savannah.
Jones warned that some Floridians "may not have power for a number of days, if not weeks".
FPL spokesman Rob Gould says an estimated 3.4 million homes and businesses will lose power once the worst of Irma reaches the Florida mainland.
In Riviera Beach, on Florida's east coast, winds partially ripped roofs off two apartment buildings, forcing rescuers to evacuate about 50 people from the complex, according to CNN.
"We are not encouraging residents to move out and go to shelters at this time", communications director Michael Hernández said Sunday morning.
Fort Lauderdale's airport said it would resume commercial operations at 4 a.m. on Tuesday, September 12.
The hurricane was responsible for at least 26 deaths, including 10 in Cuba, as it passed through Caribbean island nations.