Please study QXP.
7:83 We saved him (Lut) and his followers. But his wife who lagged behind in belief stayed with the crowd, and was destroyed.
7:84 And We rained a rain upon them (a huge shower of stones). See now how grievous was the end of the guilty.
[A huge volcano was about to erupt. The Prophet of God had advance knowledge and he moved out at the right time, along with his followers]
10:73 But, they persisted in their denial, and We saved Noah and his companions who boarded the ship, and made them successors in the land. And We drowned those who had rejected Our messages. See then what happened to those who had been given sufficient warning.
[The deniers thought of the flood warning as a laughing matter. The Tigris and the Euphrates rivers flooded with torrential rains]