On 11 July 2017 two pyroCbs formed in the Northwest Territories. GOES-15 detected the smoke plume and pyroCb cloud, as well as the fires hot spots. The first pyroCb cloud (~65.6º N, 129.9ºW) formed around 23:30 UTC on 10 July . The second formed shortly after around 67.1º N  128ºE. Starting at 23:00 UTC on 10 July, […]