The scale of the Siberian wildfires is underlined by this animation of the huge area of the smoke cloud: more than 5 million km².
For comparison, the EU is about 4.5 million km² and the contiguous US about 8.1 million km².
(Via @anttilip of @IlmaTiede)pic.twitter.com/RDhntqaDEO

— World Meteorological Organization (@WMO) August 12, 2019