This research will provide important tools to improve the understanding of spot-fire and ember behaviour in dry forests of south east Australia, complementing and improving existing fire behaviour models. As extreme bushfire behaviour predictions are based on a limited number of observations, this research will analyse operational line scan mapping produced by the NSW Rural Fire Service and Victorian Department of Environment, Land, Water and Planning to understand spot fire behaviour, including distance from main fire front, number of spot fires, their size, and growth. The expected improvement in modelling accuracy of embers and spot-fires will allow agencies to make better informed decisions for bushfire planning and response, including the issuing of warnings, risk analysis and resource deployment.