As Irma churns north, South Florida assesses damage

The monster storm damaged buildings, downed trees, caused widespread flooding and snapped power lines, which have left millions of residents in the dark.
6:41 | 09/12/17

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Transcript for As Irma churns north, South Florida assesses damage
Reporter: In the battle of man versus nature, Irma is proving she's a force to be reckoned with. These stunning images showing the hurricane's incredible power. Whoa! Jimmy: Storm chasers pushed back as they try to measure wind speeds. A tourist knocked over by the sea. The devastation it left from one end of Florida to the other is just coming to light. And as Irma continues its relentless March north in Jacksonville a flash flood emergency. Thank you, guys. Jimmy: Water rescues along the swollen St. John's river. The city's mayor with this advice to residents who didn't flee. I would remind folks to put a white flag if we need to get you out. Jimmy: Near Orlando Orange county fire and rescue pulling residents and a scared puppy out of a flood zone. This morning in the Florida keys where the hurricane first made landfall in the U.S. Our first look at the damage, boats grounded, cars under sand. Homes destroyed. My heart goes out to people in the keys. There's devastation. A tree down right there. . My colleague tried to see the damage for herself. It's 3:45 on the road we're trying to get to the Florida keys. But like its many residents trying to return home we were stopped by roadblocks. This road into the keys is not going to be open for a long time. No residents are going to be allowed in at the present time and they do not anticipate a time frame of when the residents are going to be allowed in. I want to go home. And there's no right for them to make me leave. And then now not let me go home. They said it could be hours. It could be days, it could be weeks, up to a month. But hours ago, Amy was able to survey the damage from the air. So much water. Boats thrown up side down, roofs ripped off and entire mobile homes demolished. Look at the parks in marathon it is a debris field. Some of them are completely destroyed. Downed power lines the beach spilling into the roadway, debris everywhere. It will be months before the community of marathon is up and running. Matt Gutman travelled to Marco island where the hurricane made its second strike unleashing it fury with wind gusts of 135 miles an hour. 5,000 hunkered down waking up to mangled trees and no power. We have no electric and no water on the island. We are encouraging people if you don't have to come back right now, don't. Rescuers making their first rounds earlier today. What is that? That's the ceiling. It seems to have shredded the insulation. It got wet. I guess, and they all came apart. Mark bellfor fled for safety. We were dead center. An estimated 13 people in Florida without power as utility crews working 24/7 to get the state up and running again. These satellite images showing south Florida before and after Irma hit. The once brightly lit cities dimmed by power outages and storm clouds. Not good. That's not good. Trees collapsing, power lines snapping. Look at that power pole split into two pieces. There are power lines across the road. We know that police aren't taking any chances. They set up a roadblock to make sure no one drives over those lines. Last night was horrible. Jimmy: T This family lost power and is relying on a generator to keep the refrigerator running for now. I don't see the power coming on soon. It's nighttime now and it is dark because there is no power. We saw some people hanging out in front of their house and talk to them now. So no power? Dave and Margie now without power since yesterday afternoon. They got the tub filled up here because the water in this area of ft. Myers is not working any more. Over the weekend the monster storm roared ashore as a category 4 hurricane spanning 400 miles across. The state drenched with stinging rains and storm surges up to 6 feet in places. Striking cities like Naples with wind gusts up to 143 miles an hour. These winds are unbelievable. The trees that are down, the debris that is flying. Look at this. This is just incredible. It feels like you are being blasted with a fire hose. Feeling the brunt of hurricane Irma right now. It is relentless. Miami battered and soaked. Trees uprooted. Just pulled straight out of the ground here. This is a street, this is not a river but looks like it. Two massive cranes collapsing amid luxury developments. Another in nearby ft. Lauderdale. Now Irma is a tropical depression but as it moves to Atlanta, much of the deep south remains at risk of flooding. Another threat, tornados. Earlier today, a watch in effect from Savannah to Charleston. So far, Irma has claimed ten lives in the U.S. And 37 in the caribbean and forced more than 6 million fl floridans to evacuate. Although damage to Florida wasn't as bad as some feared, Irma is a storm for the history books, spending a record-breaking three days as a category 5 hurricane. With sustained wind speeds up to 185 miles an hour out at sea, making it one of the most powerful hurricanes ever recorded over open water. Coming on the heels of Harvey it's the first time two category 4 hurricanes have hit the U.S. In a single season and it's still the peak of the hurricane season. The prevailing hope is that mother nature will spare the region another shattering blue. When we come back, the

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