He allegedly called Mr. Jim Lee Barnett, the man who runs the Mercantile in Strawberry, a liar. The Logan children were relieved because <span>they had originally thought that the night riders (those responsible for Tatum's punishment) were out to avenge what the Logans had done to the school bus.</span>
The italicized word (magnitude) in the sentence can best be matched by the word: size. This is referring to the size of the disaster, that it is hard to imagine something happening on that size scale.
My friend got 20 bucks one time