In large areas of Mexico Beach, homes were obliterated or reduced to stacks of rubble, aerial video from CNN showed on Thursday.
Hurricane Michael made landfall Wednesday as a Category 4 storm with winds of 155 miles per hour, destroying buildings and leaving some structures fully submerged in water.
It's powerful 155mph winds ripped through the coast, flattening homes, flooding roads and leaving more than 400,000 without power.
The storm has already killed a girl in Florida and a man in Georgia.More news: Everything you need to know about Princess Eugenie's wedding
'Continuous lightning is present on the forward edge of the eyewall, and lightning detection on the rear edge rotate with specific sections of the eye'.
Jonathan Bachman / Reuters Waves crash along a pier as Hurricane Michael approaches Panama City Beach, Florida, on October 10. Beachfront structures could be seen collapsing and metal roofing materials were blown away amid the heavy rain. "It is most likely that the very warm water in the Gulf.is likely contributing to the intensity and the intensification that we have seen", Jim Kossin, an atmospheric scientist with the U.S. National Oceanic and Atmospheric Administration told Reuters. The core of Michael will move across eastern Georgia into Central South Carolina on Thursday morning.
The center is expected to pass just southeast of metro Charlotte, the National Weather Service said. Reaching the worst-hit areas wasn't easy: Authorities closed Interstate 10, the main east-west route along Florida's Panhandle, for 80 miles to clear debris, the Florida Highway Patrol said.
General Terrence O'Shaughnessy, commander of North American Aerospace Defense Command, said some Florida residents may have been surprised by the rapid growth of the storm.
Apalachicola Mayor Van Johnson said: "There are so many downed power lines and trees that it's nearly impossible to get through the city".
An estimated 6,000 people evacuated to emergency shelters, mostly in Florida, and that number was expected to swell to 20,000 across five states by week's end, said Brad Kieserman of the American Red Cross.More news: Gathering strength, Hurricane Michael heads for Florida
Forecasters said it would unleash damaging wind and rain all the way into the Carolinas, which are still recovering from Hurricane Florence's epic flooding. The hurricane hit the Florida Panhandle as a category 4 storm. A hurricane with 157 miles per hour or higher is a Category 5.
The hurricane, the fiercest to hit Florida in 80 years, pummeled communities across the Panhandle and turned streets into roof-high waterways.
The lower the minimum pressure, the more intense the hurricane.
It made landfall on the coast as a Category 1 hurricane on September 14 and drenched some parts of the state with 40 inches (101 centimeters) of rain.
As the hurricane moves out of Florida, Scott warned that flash floods and tornadoes are still possibilities and said "the weather is still extremely risky".More news: Australia Aim to Start Well