This fires became active again on 25 May 2015 and produced some pyrocumulus clouds. The first pyroCb was  in Saskatchewan near the eastern border (56.23º N, 109.82º W), and the second in western Alberta (54.85º N, 110.38º W). This was detected by GOES-15 0.63 μm visible channel and 3.9 microns shortwave IR Channel (see the below image […]

On 25 May 2015 there were reported two  pyroCbs at 59.3 N 132.6 W. The first was around 23:00 UTC on 25 May. The second was around 1:00 UTC on 26 May 2015. According to Whitehorse and Fort Nelson soundings the later pyroCb reached 11 to 12 km. GOES 15 detects the pyroCbs at visible (.63 […]