In listing the hurricane seasons, it is obvious what happened. The emissions from industry (commercial jets included) and personal transportation erupted and now we are seeing the price to pay for allowing such extreme amounts of emissions into Earth's troposphere.
It is obvious from the hurricane maps that as more people lived in the USA the stronger the storms became and as the addition of emissions from consumerism occurred the number of hurricanes simply skyrocketed. The hurricanes drove heat into the oceans and the glaciers and ice caps are taking a beating from the heat.
In the 2006 hurricane season the nature of the storms changed and there began to be near shore storms that never existed before. Since then Earth has eliminated boundaries to tornado and hurricane seasons.
It think it is obvious how hot Earth has become.