A Category 6 is a hypothetical rating beyond Category 5 with winds speeds of at least 181 mph to 214 mph and an average pressure of roughly 905 mbar to 880 mbar. It is a fairly popular rating among users on Hypothetical Hurricanes, being common in seasons or individual hurricanes. A category 6 can cause up to $300 billion USD in damage and even up to 100,000+ deaths.

An average Category 6

Category 6 hurricane
Jangmi 2008-09-27.jpg
Duration August 28 – September 8
Peak intensity 200 mph (325 km/h) (1-min)  862 mbar (hPa)

In Late August or early September, a tropical wave moves off the coast of Africa and becomes a TS that looks like Bertha2.jpg. The TS is a J-P name. Lets give it a name: Katrina. TS Katrina becomes a hurricane in the Caribbean and becomes a C5. The storm strengthens to 185 mph and Andrew calls it a C6 and it strengthens to 195 mph, now its really a C6. The storm heads towards New Orleans. Its called Katrina because I wanted to and its 2065. On September 3, Katrina makes landfall in Alabama, monsterous damage is $192 billion, and deaths rose from 66 to 12,733. Katrina weakens way back to a TD and becomes ex-tropical(XTD). XTD Katrina strengthens to a XTS and a XC1 and dissipates on the 8th.