Hurricane Michael hit land on October 10 as a Category 4 hurricane on the five-step Saffir-Simpson scale, one of the most powerful storms to make landfall in the continental United States since records began.
At least 18 people in four states have died because of the storm.
Dozens of people remained missing on Sunday in Florida Panhandle communities have been reduced to ruins.
More than 1,700 search and rescue workers were deployed, Florida Governor Rick Scott’s office said, including seven swift-water rescue teams and nearly 300 ambulances.
Rescuers are using cadaver dogs and heavy equipment to search through collapsed homes in small towns such as Mexico Beach and Panama City for more victims.
Rescue efforts have been hampered by blocked roads and huge piles of rubble in many communities such as Mexico Beach, which took a direct hit from the massive storm that killed at least one person there.
Electricity and telephone service were being slowly restored but it could be weeks before power returns to the Florida’s most damaged areas.
Hundreds of calls from people around the country looking for their relatives continue piling up as emergency crews attempt to reach the most remote areas.
President Donald Trump is expected to visit both Florida and Georgia early this week to inspect the damage, accompanied by first lady Melania Trump.
Two Florida prisons housing a total of nearly 3,000 inmates were evacuated and closed at least temporarily after suffering structural damage.
The department said no staff or inmates were injured during the storm and all had access to sufficient food and water.