On 19 June 2017 a pyroCb formed in Yukon. GOES-15 detected the smoke plumes and pyroCb cloud, as well as the fires hot spot. The pyroCb cloud (~66º N, 137ºW) formed around 23:30 UTC . Starting at 22:00 UTC on 19 June, the animation below shows GOES-15 0.63 µm visible (left) and 3.9 µm shortwave IR (right) […]