With an air temperature (49C) well above the minimum flashpoint of JET-A1 (38C) and the ground surface (concrete or asphalt) likely to be even hotter, any fuel spill might well generate plenty of immediately ignitable vapour. Then any ignition source would cause a rapidly growing fire and even fuel/air explosions, causing the fire seen in the video sources mentioned so far.
Can any specialists comment on whether very hot airports have an increased fire risk of a fuel leak (compared to, for example, the BA38 crash where there was no fire, or the Asiana crash at SFO where fire seemed to take hold more slowly)?