Basicallly, it would set seperate duration times for each storm element. -1 would be permanent storms (In tornadoes and hurricanes, it would comtinue to build up from F1 to F5 and stay there until killall is used.)

use the command "Weather2 storm create (insert storm type here)" and then put "alwaysProgress" afterward. This makes the storms always progress into the top class.

I think the Weather Machine being able to produce through F5 would be a good addition though.

I tried to do that and I put F5 and the tornado alwaysShrinks

That is because F5 is the highest it can go

I hope the creator of this adds in this feature, because I want to create tornadoes that remain at F5 for a long time.