View: towards the north. Fort Collins lies to the right, and Poudre Canyon is the northernmost boundary of this domain. Each frame is a minute apart, the total animation covers the local time from 5:45 am 6/9/12 to 3:00 am 6/10/12. The misty field represents smoke, colored by concentration – higher concentrations are more opaque (linearly with concentration) and darker. The colors identifying the burning parts of the fire are the sensible heat fluxes released by the fire (see color bar to right, in W/m^-2). Darker browns are lower fluxes. The surface appears dark brown where fire has passed. Red arrows represent the near-surface horizontal wind speed (the length of the arrow) and direction (the arrows point downwind).