i think the basic answer is the the warm air holds more water vapor comparison to less warmer air . with fractions of increase in temperature, the holding capacity of air parcels increase which leads to more instability. and more instability with background large scale convective environment pops up more storms . we can discuss more from the fraternity

An increase in global temperatures leads to an increase in the frequency of extreme weather conditions. When temperature increases, more water vaporize and accumulate in the atmosphere, leading to more massive hurricanes and tempests. Secondly, increases in atmospheric temperatures elevate the whole amount of energy preserved in the atmosphere. In turn, this can enhance heatwaves. A raised total energy in the atmosphere means that the total energy within the atmosphere escalates, resulting in extended droughts. Enhanced temperatures can also create temperature discrepancies, which impact weather conditions in the world. When the temperature differences are decreased, they impact the atmospheric instability, creating heat waves and fire events. Temperature discrepancy also results in shifting winds and other complex in the weather system. These variations create an environment for intense storms. In summary, attributing the rising cases of severe weather to climate change supports the likelihood of exquisitely established assessments. Climate change is caused by an increase in human-produced pollution, which could culminate in natural disasters such as increasingly severe hurricanes.