Book Evaluation Author's tone

In chapter one when Reed and his friends are chasing a cyclic supercell through south central, Reed talks about his excitement for seeing his first tornado up close. He talked about he yelled and screamed at the storm like it was a living thing, his tone soon turned from excitement to a grave tone. He talked about how he was telling his friend Matt to get closer to the tornado, his tone was all of excitement until they hid under the freeway overpass and his friend Rick made Reed come to his senses and Reed became terrified along with the rest of his friends until the end of the chase. Reed and his friends were even more somber when they followed the storm into Moore and saw the devastation and destruction first hand