Falling To Earth by Kate Southwood.
March 18, 1925. The day begins as any other rainy, spring day in the small settlement of Marah, Illinois. But the town lies directly in the path of the worst tornado in US history, which will descend without warning midday and leave the community in ruins. By nightfall, hundreds will be homeless and hundreds more will lie in the streets, dead or grievously injured. Only one man, Paul Graves, will still have everything he started the day with –– his family, his home, and his business, all miraculously intact.
Copies of the book are available at the library.