Joplin, Missouri (CNN) - The sirens started to wail just as we began to broadcast.
Lightning and thunder had begun an hour earlier, and the entire town of Joplin was under lockdown.
"That means one has touched down," Melisa Carriger, whose husband had narrowly survived the Joplin tornado, nervously told me. By “one,” Carriger meant another tornado.
We knew severe weather was expected again in Joplin during AC360°'s live hour of broadcasting Tuesday night, but the sirens still put everyone on edge.
We had scouted out the safest location for the show and built contingency plans in case another tornado hit, but it was hard to know what was happening.
We were already on-air; Anderson told one guest in Joplin who had joined us by phone to head down to her basement for shelter, while producer Susan Chun talked directly with our control room back in New York City to get the latest from CNN's Weather Center.
I turned to Chris Carriger, who was about to talk with Anderson about how he narrowly survived the tornado in his bathtub, clinging to the faucets as his roof ripped off and his body lifted into the air. A police detective and National Guard vet who served four combat tours in Iraq, Carriger wore his combat name tag, "Lawdawg," the one memento he found after the tornado. He used his police radio to find out whether a tornado had touched down.
It turned out we weren't in a tornado’s path, but extreme weather was moving in fast. As we neared the end of the broadcast, it began to rain with 75 mile per hour winds. We quickly wrapped the end of the show and threw all of the gear in our cars.
Related: Rotating storm avoids Joplin
Moments of Tuesday's broadcast were frightening, but none came remotely close to the horror experienced by Joplin's residents.
Since we arrived Monday, we have seen first hand the destruction, but none of us can ever know what it really feels like to have lived through the tornado and, worse, to cope with all that it has taken.
Wednesday, search and rescue efforts turned to recovery. Many people here still hold out hope for news of their missing loved ones. Desperate for any information at all, they’re combing regional hospitals and posting messages online.
This is especially true for Mike Hare, who said he would be driving Wednesday night to hospitals across the state to search for his 16-year-old son Lantz.
It's true for Christina, Robert and Caleb Hayward, three siblings waiting for any news of their mother, who disappeared while out shopping for food.
Related: Kids searching for missing mom
And, it's true for Will Norton's family, who continues to search for him. His aunt Tracey Presslor told us Wednesday that she hopes even if Will is not found alive, they can at least find his body and bring him home.
Anderson Cooper goes beyond the headlines to tell stories from many points of view, so you can make up your own mind about the news. Tune in weeknights at 8 and 10 ET on CNN.
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