The Messenger Adrift — Joel Pierson

Tristan Shays and Rebecca Traeger are back in the follow-up to Don't Kill the Messenger. Tasked with saving a town of 11,000 people from a deadly tornado, the pair find themselves on the prairies of Kansas, with just two days to convince the people of Cedarsburg to evacuate. Rebecca calls on an old friend who has experience in storm chasing, and together they strategize.
But when the old friend wants more from Rebecca than friendship, it puts a strain on her fragile relationship with Tristan. The messenger has plenty on his mind already as he befriends a graduate student in psychology who believes she has a medical explanation for his constant string of assignments.

Tristan finds himself plagued with questions: Is he insane? Is he being manipulated? Is he part of a larger plan that he can't see? And is he alone in his ability to see future disaster and his compulsion to warn the victims? All this conflicting information is enough to set the messenger adrift in his own thoughts.