2011 has brought the worst US tornadoes and the worst Queensland floods since 1974. In 1974, CO2 was well below Hansen’s safe 350 ppm – so we can rule out CO2 as a cause. So what do 2011, 1974 (and 1955) have in common?
The floods in Queensland were also the worst since 1974.
In 1955, Brisbane had similar floods.