One could almost feel like a Tornado when performing this Kata, the ever whirling and turning within the Kata indicates energy with great magnetic force.
A drawing force that lifts you up and then puts you down with great ferocity, thus the pounding movement, just like an earthquake (Jishin in Japanese).
As to the second to last movement, which is the reverse punch this suggests, two storms colliding creating electrical thunder and the last movement which is turning fast, with Mawashi uke, could be a storm executing its combined authority and majesty
The Element present in this Kata would suggest Air and Wind
Chief Instructor OTGKA