Travel distance sensitivities for different firebrand temperatures, diameters, densities, and background wind speed. The varying parameters (T, d, ρ, and U) are displayed on the corresponding plots in red, blue, and green, and the fixed parameters are indicated in gray. At the bottom of each plot, the star indicates the distribution medians for the coupled simulations. The distances for the uncoupled simulations are indicated by the vertical dashed lines.