Transcript for At least 25 killed, 3 missing after Tennessee tornado
and Sonia Sotomayor for The search for survivors after tornadoes hit Tennessee. We know one of them was an ef-4 with winds reaching 175 miles per hour. Victor Oquendo is in Putnam county, Tennessee, with much Moren O all this. Good morning, Victor. Reporter: Good morning, robin. They took 9 brunt of that ef-4 right here. Homes were blown away, shredded, reduced to piles of debris and rubble. Of the 25 people who died across middle Tennessee, 18 of them were right here in Putnam county and as you take a look from above, you'll understand why. This neighborhood was decimated. 0-degree devastation. There is nothing left and there are still people missing. This morning, an urgent search for the missing after at least two devastating tornadoes in Tennessee clmed the lives of at least 25 people It' horrifying. Reporter: These exclusive new thermal images fm a drone police are using to help find those who might still be trapped in the rubble. I've done a lot of these since hurricane Katrina, hurricanes and tornadoes is probably one of the worst scenes I've seen. My son-in-law and their baby son. I'm so sorry. Both my nephews lost their parents one night, one storm killed tm both. Reporter: Lamar Redmond losing his sister and brother-in-law. This is the front porch and beyond that porch was the home itself. It's gone. It's completely gone. Reporte tr:he youngest vicmti just 2 years old. Sawyer died along with his parents Josh and Erin but harrowing stories of survival amidhe tragedy. If we hadn't had woken up we'd be gone. I woke my wife up and we just took off running down to the basement. Reporter: 73-year-old Jean Gregory's husband frank using himself as a human shield to protect her. So he came in and he drug me off the bed and threw me on the floor and got on top of me and we rode it out. Reporter: That couple somehow lucky enough to walk away without a scratch. Search crews will be out again later thismorning. The way one neighbor put itife as they kwne it here I gone. Robin. All right, Victor, the region is facing another severe weather threat today and rob back from Tennessee has the latest. Good morning. Luckily what came through yesterday wasn't a repeat of what went tough Tennessee but still damage across parts of Mississippi. This is Canton, Mississippi, sendina survey team to see if this was a tornado. Certainly looks like winds strong enough for that. Here's a low causing all the headache. Motoring down I-10 and the severe weather threat will be from Tallahassee up through southern Georgia. Then later on today Jacksonville through Savannah. Damaging winds, a few tnadoes possible and large hail before it moves off on Friday. There is a flood component to this. We'll talk more about that in a bit. Over to you. Rob, thank you very much.
This transcript has been automatically generated and may not be 100% accurate.