The first verified pyrocumulonimbus (pyroCb) cloud of the 2015 wildfire season formed in central British Columbia, Canada late in the day on 12 May 2015. A comparison of GOES-15 (GOES-West) 0.63 µm visible and 3.9 µm shortwave IR images (above; click image to play animation; also available as an MP4 movie file) showed the growth […]