Here's a look at some of the destruction Irma left in her wake.
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More than three million people in Florida were in the dark Sunday night after Irma pounded parts of the state's Gulf Coast with winds of more than 200 kilometers per hour.
"I don't think anybody alive today in this state has ever seen anything like this", Scott said at the state's emergency operations center when the first parts of the storm started to cross into the Florida Keys.
It shut only one of the two reactors at its Turkey Point nuclear plant about 30 miles south of Miami on Saturday, rather than both, because the storm shifted track. In other parts of the island chain, the closure of United States 1, a major artery that connects the islands with the mainland, was a prime concern.
In another video shot by the owners of a Miami shop on Sunday, a giant wall of flood water is shown pounding the premises.
More than 490,000 customers were without power in Florida early Sunday, according to utility companies including Florida Power & Light.
Irma was forecast to cross the eastern Florida Panhandle and move into southern Georgia later in the day, dumping as much as 16 inches (41 cm) of rain, government forecasters said.
Buckhorn said areas along the Tampa Bay shoreline could expect a unsafe storm surge anywhere from 3 to 8 feet, adding that it would depend on where Irma went.
As of about noon, six of 42 bridges in the Keys had been inspected by the Florida Deptartment of Transportation, and none had been cleared of debris and downed power lines enough to be re-opened to vehicles.
Mayor Bob Buckhorn says restoring electricity to the hundreds of thousands of citizens in Tampa now without it is issue number one the day after Hurricane Irma barreled through Florida Sunday night.
The system, which has already knocked out power to nearly 500,000 customers across the state, was expected to churn-up life-threatening storm surges of up to 15 feet along parts of southwestern Florida and on other parts of the coast, forecasters warned.
While considering how the city would react, Buckhorn quoted boxer Mike Tyson, saying, "Everybody has a plan until they get punched in the face". Irma's rampage across northern Cuban took the lives of 10 people, officials said today as the scope of the disaster came more fully into view. And it could be a week until it's restored, Barnett said. Petersburg area feared a first direct hit from a major hurricane since 1921. Some homes and businesses could be without power for weeks, especially in the hardest-hit areas like southwest Florida, the NextEra Energy Inc NEE.N unit said. In flood-prone Miami, the largest USA city in Irma's path, cleaning crews began clearing branches, debris and fallen street signs at dawn on Monday.