![GOES-16 “Red” Visible (0.64 µm, top), Shortwave Infrared (3.9 µm, center) and “Clean” Infrared Window (10.35 µm, bottom) images, with hourly plots of surface reports [click to play animation | MP4]](https://cimss.ssec.wisc.edu/satellite-blog/images/2020/08/G16_VIS_SWIR_IR_CO_PYROCB_14AUG2020_B2713_2020228_002616_0003PANELS_FRAME00042.GIF)
GOES-16 “Red” Visible (0.64 µm, top), Shortwave Infrared (3.9 µm, center) and “Clean” Infrared Window (10.35 µm, bottom) images, with hourly plots of surface reports [click to play animation | MP4]
GOES-16
(GOES-East) “Red” Visible (
0.64 µm), Shortwave Infrared (
3.9 µm) and “Clean” Infrared Window (
10.35 µm) images
(above) showed 2 pulses of pyro-convection emanating from a wildfire that was burning between between Kremmling (K20V) and Berthoud Pass (K0CO) in Colorado on
14 August 2020. The cloud of the second pulse, originating around 2300 UTC, exhibited infrared brightness temperatures of -40ºC and colder
(shades of blue in the 10.35 µm images) — assuring the heterogeneous nucleation of all supercooled water droplets to form ice crystals, and thereby meeting the criteria of a pyrocumulonimbus (pyroCb). The pyroCb then drifted east-southeastward across Colorado.
The coldest pyroCb infrared brightness temperature was -46ºC, which corresponded to an altitude near 11 km according to rawinsonde data from Denver (below).
![Plot of rawinsonde data from Denver [click to enlarge]](https://cimss.ssec.wisc.edu/satellite-blog/images/2020/08/200815_00UTC_KBOU_RAOB.GIF)
Plot of rawinsonde data from Denver [click to enlarge]
from CIMSS Satellite Blog
https://cimss.ssec.wisc.edu/satellite-blog/archives/37969
![GOES-16 “Red” Visible (0.64 µm, top), Shortwave Infrared (3.9 µm, center) and “Clean” Infrared Window (10.35 µm, bottom) images, with hourly plots of surface reports [click to play animation | MP4]](https://cimss.ssec.wisc.edu/satellite-blog/images/2020/08/200814_goes16_visible_shortwaveInfrared_longwaveInfraredWindow_CO_pyroCb_anim.gif)
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