The National Weather Service in Jacksonville says storm surge flooding exceeds the record set in 1965 during Hurricane Dora.
"I don't think I saw one trailer park where nearly everything wasn't overturned", Scott said.
Gusts forecast to top 60 miles per hour through the afternoon rendered cities across the region ghost towns as the week began with most people staying home from work and off the roads.
Still, the scope of damage in Florida and neighboring states paled in comparison with the utter devastation left by Irma as a Category 5 hurricane, the rare top end of the scale of hurricane intensity, in parts of the Caribbean, where the storm killed almost 40 people - at least 10 of them in Cuba - before turning its fury on Florida. At least seven people were killed in Florida by the storm, which made landfall in Florida as a Category 4 hurricane on Sunday.
Listen to the latest news on our 5 radio stations Legend FM, Viti FM, Radio Sargam, FM96 and Navtarang.
The flooding in Jacksonville, while predicted, is some of the worst the city has seen. All of this is thanks to Irma, which has been downgraded to a tropical storm this morning as she continues to move inland. The U.S. military deployed Navy ships and aircraft and hundreds of Marines to help with recovery efforts in Puerto Rico and the U.S. Virgin Islands.
"US 1, the only road that comes in and out of the Florida Keys, there's three choke points - there are three places that are completely inaccessible".
FPL said its two nuclear plants in Florida were safe.
Some 6.3 million people in the state were told to evacuate before Irma arrived.
10 people have been killed in Florida, Georgia and SC. The ocean storm had been the strongest kind of hurricane - a Category 5 - as it moved through the Caribbean area last week.
And in Alabama, some city school districts including Birmingham, Huntsville and Auburn planned to close Monday and in some cases Tuesday. At least 27 people died from Irma in the Caribbean, reports said.