On 25 June there was a pyroCb that was produced at 23:30 UTC in the Northwest Territories (62.3 N 117.3 W). GOES-15 detected the smoke plume and pyroCb cloud, as well as the fire hot spot. Starting at 19:00 UTC on 26 June, the animation below shows visible (.63 μm) on the left and shortwave IR (3.9 μm) on the right (click image to play animation). In the shortwave IR images the red pixels indicate very hot IR brightness temperatures exhibited by the fire source region.
Furthermore, using GOES-15 10.7 μm IR channel the cloud-top IR brightness temperature could be found. The animation below, starting at 19:00 UTC on 26 June, shows the brightness temperature of this pyroCb reaching -50.6ºC (yellow color enhancement) around 00:00 UTC on 26 June.