As part of the development of the next generation of the Canadian Forest Fire Danger Rating System (CFFDRS) a new set of indicators have been developed and are being added to the updated Fire Weather Index (FWI) System. These additions to the FWI System will provide more accurate representation of the fuel moisture and fire behaviour potential in peatland fuels with characteristics that are distinctly different from the typical conifer stand that forms the core of the FWI System. The new indicators are the Peat Moisture Code (PMC) and the Peat Spread Index (PSI). The PMC incorporates peatland hydrological processes to model the change in storage in the peatland water balance in a simple to use bookkeeping approach. The physical processes, data requirements, and associated equations are outlined in the following presentation. The PMC incorporates typical peatland (treed poor fen) characteristics of above-ground vegetation and below-ground peat structure to represent a common peatland response to fire weather inputs and should be used to represent the potential for above-ground flaming fire and smouldering (underground) combustion in peatlands. Here, I will discuss the development of the PMC and PSI and the potential utility of the indices for research and practice.