Why would storminess increase in a warming world? What kinds of storms could be affected?

Generally, storms are primarily driven by the heat of the water vapor condensing into precipitation. Storms are triggered when a cold front, covering near-surface wind destabilizes a mass of humid, warm air and causes it to rise. The air cools and expands as it rises, increasing the humidity until the water vapor condenses into liquid water or ice crystals. The process of converting water vapor into liquid droplets or ice crystals releases latent heat into the atmosphere. Storms feed off of latent heat and this is the main reason why scientists believe that Global warming nourishes and strengthens storms. Atmospheres increasing concentration of greenhouse gasses could lead to more frequent and intense storms. The more heat energy goes in, the more strongly a weather system can churn.

Global warming is expected to cause changes in some storms - tropical storm such as typhoon could be stronger. A study also showed that hurricanes intensify significantly faster now than they did 25 years ago.