On 22 June 2017 a pyroCb formed from the Brian Head Fire in Utah. GOES-15 detected the smoke plumes and pyroCb cloud, as well as the fire hot spot. The pyroCb cloud (~37.7º N, 112.8ºW) formed around 23:30 UTC . Starting at 23:00 UTC on 21 June, the animation below shows GOES-15 0.63 µm visible (left) and […]