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Pyrocumulonimbus cloud in Australia

By Scott Bachmeier •

JMA Himawari-9 Shortwave Infrared (3.9 µm, top) and Clean Infrared Window (10.4 µm, bottom) images, from 0700 UTC to 1500 UTC on 18 December [click to play animated GIF | MP4]

10-minute JMA Himawari-9 AHI Shortwave Infrared (3.9 µm) and Clean Infrared Window (10.4 µm) images (above) showed he development of a pyrocumulonimbus (pyroCb) cloud northwest of Tamworth (YSTW) in New South Wales, Australia on 18 December 2023. The coldest cloud-top Infrared Window brightness temperature was -53.4ºC at 1230 UTC.

The southern flank of the large wildfire complex flared up after a convective outflow boundary moved southwestward across the area between 1000-1100 UTC — the pyroCb cloud then developed by 1200 UTC.

Categories: Fire detection, Himawari-9