The air heats as it moves through the city to the center, then rises, cools and condenses into rain.
(The air; heats; T:as it moves through the city to the center) (it; moves; through the city; to the center) (The air; rises; cools and condenses; into rain; T:then)
The air it The air
heats moves rises
T:as it moves through the city to the center
through the city to the center
cools and condenses into rain T:then