Pyrocumulonimbus clouds in British Columbia, Canada
GOES-16 Visible (0.64 µm, top) and Shortwave Infrared (3.9 µm, bottom) images, with hourly surface reports plotted in yellow [click to play animation]
GOES-16 “Red” Visible (0.64 µm) and Shortwave Infrared (3.9 µm) images (above) along with “Red” Visible and “Clean” Infrared Window (10.3 µm) images (below) showed the formation of 3 pyrocumulonimbus( pyroCb) clouds late in the evening on 12 August 2017, within the cluster of ongoing intense wildfires in British Columbia, Canada.
GOES-16 Visible (0.64 µm, top) and Infrared Window (10.3 µm, bottom) images, with hourly surface reports plotted in yellow [click to play animation]
![NOAA-18 Visible (0.63 µm), Shortwave Infrared (3.9 µm) and Longwave Infrared Window (10.3 µm) images, with surface station plots in yellow [click to enlarge]](https://cimss.ssec.wisc.edu/satellite-blog/wp-content/uploads/sites/5/2017/08/170813_0204utc_noaa18_bands010220304_BC_fires_anim.gif)
NOAA-18 Visible (0.63 µm), Shortwave Infrared (3.9 µm) and Longwave Infrared Window (10.3 µm) images, with surface station plots in yellow [click to enlarge]
![Suomi NPP VIIRS true-color image, with VIIRS-detected fire locations plotted in red [click to enlarge]](https://cimss.ssec.wisc.edu/satellite-blog/wp-content/uploads/sites/5/2017/08/170812_viirs_fires.jpeg)
Suomi NPP VIIRS true-color image, with VIIRS-detected fire locations plotted in red [click to enlarge]
===== 13 August Update =====
On 13 August, a maximum OMPS AI value of 39.91 was seen at around 21:13 UTC over the Northwest Territories of Canada (above) — according to Colin Seftor and Mike Fromm (NRL), this value surpassed the highest pyroCb-related AI value ever measured by TOMS or OMI (whose period of record began in 1979).The north-northeastward transport of BC fire smoke — as well as a prominent increase in smoke from fires across northern Canada and the Prairies — was evident in an animation of daily composites of Suomi NPP VIIRS true-color images from 07-13 August (below).