The strongly buoyant flow generated in and around a large area fire is analyzed. Jump conditions applicable at the fire periphery are used to effect model problem closure, thus permitting calculations of induced fire winds independent of a far-field analysis. Combustion processes are modeled by a volume heat addition. The induced flow is compressible, with arbitrary changes in temperature and density allowed. In one parameter limit, the model equations can be solved exactly. The resulting solution concisely describes the basic interchanges of changes and momentum as well as the role of pressure gradients in fire-wind generation. In general, the localized analysis provides a frame-work for detailed studies of the complex physics of fire-generated flows without recourse to extensive numerical computations involving the far field.