The Sydney Morning Herald | 'Everyone is under great threat': Call for cyclone-like categories for heatwaves The Sydney Morning Herald Heatwaves cause more deaths in Australia than all other natural hazards combined, so authorities should consider a cyclone-like rating system to help people prepare for hot spells, a risk researcher says. While the Bureau of Meteorology has developed ... We've Learned A Lot About Heatwaves, But We're Still Just Warming Up An “Intense” Heatwave Hits Australia: Brisbane And Sydney Slammed Especially Hard |