How did the fire tornado in Sao Paulo, Brazil happen?

20 10 on August 24th, a rare natural phenomenon of fire and tornado occurred in Sao Paulo, Brazil. This natural phenomenon is due to the tornado passing through the burning field and then turning into a huge burning dragon. It hasn't rained for three months in the area where the fire whirlwind appeared. Unusually dry weather and strong winds contributed to the fire here.

Brazil's Global TV reported that the air dryness in Sao Paulo has caught up with the Sahara desert. This dragon wind flew about several meters high in the burning field, blocking a road. In order to put out the fire dragon, local helicopters were dispatched. At the same time, in order to prevent new fires, the municipal government of S? o Paulo has ordered the prohibition of burning crops after wheat harvest.