Cyclone Yasi is still having steam in its storm system, and it was indeed moving with great speed even though it had entered 600 kms into Australia. As per the records, this was the most massive and destructive cyclone to have ever struck Queensland, especially since the European settlement on the continent.
The top speed of Yasi winds were clocked at 290km/h, and it has always been seen, cyclones or hurricanes have always turned into rain depressions when they make landfall, but in Yasi’s case it does not seem so. The storm system had to turned into a category 1 when it passed through some small towns of Queensland, and the people were quite panicked after they were rattled with cyclonic winds for almost eight hours.
Yasi was a category five cyclone with speeds touching 300km/h, and poured rain at Mt Isa, and this will be the first cyclone to ever arrive at Mt Isa for it 700 kms inland from the coast. But by the time Yasi reached Isa, it began to shower normal tropical rain over Queensland.