If you look at superstorm Sandy on October 29th, the ocean water east of New Jersey was nine degrees fahrenheit above average. That’s what put so much more energy into that storm. That’s what put so much more water vapor into that storm. Would there be a storm anyway? Maybe so. Would there be hurricanes and floods and droughts without man-made global warming? Of course. But they’re stronger now. The extreme events are more extreme. The hurricane scale used to be 1-5 and now they’re adding a 6. The fingerprint of man-made global warming is all over these storms and extreme weather events.Sandy wasn't even technically a hurricane at landfall. And its winds at landfall were low Cat 1. What made Sandy damaging was its size and timing and angle of approach to the coast.
No need for a Cat 6. Heck, we haven't even had a Cat 3 hit the mainland US for years.