 The thermal environment of bushfire combustion zone is a literal hell on earth. You've got radiant heat fluxes high enough to essentially vaporize vegetation. Flame temperatures are 1,100 degrees or more. So this is a turbulent diffusion flame. One thing you notice about it is it's very hot and that's what you feel is radiant heat from a bushfire flame. In the vicinity of a fire, the temperatures can be a couple of hundred degrees. Survival basically depends on maintaining your core temperature. If your core temperature rises by two degrees or more, you run the risk of suffering from heat stroke and losing consciousness. There's no questioning the facts. Learn more at emergency.vic.gov.au Authorised by the Victorian Government, Melbourne.