Essay Outline
Galetown’s Severe Storm Weather Pattern

Introduction
Open with an explanation: Galetown is a place that has been getting more severe rain storms lately, and there has been a lot of flooding and property damage, and people want to know why this is happening.
Forensic meteorologists have determined that three factors could be causing the change in Galetown’s weather patterns: a recent pattern of warmer air temperatures, a new manmade lake recently built for recreation, and a recent increase in strong winds in the area.
Transition/closure sentence: Which of these factors could be causing an increase in severe rain storms over Galetown? Let’s explore each possibility.

Body 1: The effect of warmer air temperatures in Galetown
Opening: First, it is true that an increase in air temperature will always cause more rain to fall.
Increased air temperature causes warmer air parcels to form, with air molecules that are moving faster and moving apart. Therefore, warm air parcels are less dense (lighter) than the surrounding air.
Warm air parcels will rise higher into the troposphere because of the fact that they are less dense and lighter than the surrounding air, so they will reach a higher altitude.
At high altitudes, the warm air parcels will interact with very cold air molecules, and lose more energy to reach equilibrium with this cold air.
As the warm air parcel loses energy, condensation occurs, and large storm clouds form. This causes more rain.