How does climate change affect storms?
Simply put, storms are caused by energy in the atmosphere. Therefore the more energy the more intense storms.
That being said, the warmer that the air is the more water vapor it can hold. The more water vapor the air can hold the harder it is for the air to reach 100% relative humidity (that is you have to add more water vapor for the air to actually form clouds). This is where it becomes a little debatable.