The road containment clearly depicted in the CTRL simulation is simply the model’s response to the fuels’ characteristics in the specified fuel layer. It is known that fuel layers such as the Anderson 13-fuels (current default in WRF-Fire) and Scott and Burgan 40-fuels, are inaccurate, incomplete, and static over multiple years \cite{decastro2022a}. The fuels in these layers are simplified representations of various vegetation types, used to parameterize Rothermel’s \cite{rothermel1972mathematical} surface spread equation, and allowing for rapid application in the field, such as during suppression efforts \cite{price2022}. In the region encompassed by our computational domain, the Anderson 13-fuels classifies urban fuels in a “no-fuels” category (i.e., with fuel load equal to 0 kg m2), with the area containing the suburbs burned down by the Marshall Fire represented by short grass, hardwood litter, timber, and closed timber litter (i.e., fuel loads of 0.166, 0.78, 0.896, and 1.12 kg m2, respectively). Even though urban structures are misrepresented by the fuel layer, it realistically represents the main local roads. The results obtained with the Fire-Spots simulations indicate that for this particular case, the lack of urban fuel representation is not the primary limitation to a more accurate simulation of fire spread. The limitation arises from the fire not being able to spot, preventing the fire front from advancing across barriers.