Map showing heat detected by satellites on the Whoopup and Barrel fires at 3:00 a.m. MT, July 21 2011. The red areas represent active burning, while the black and yellow areas indicate heat detected within the last 12 or 24 hours respectively. The brown cross-hatched area is the fire perimeter provided by the incident management team at 10:00 p.m. July 19, 2011. MODIS/Bill Gabbert
