Downdrafts and updrafts found side by side occur during the "mature stage" in the life cycle of an air mass thunderstorm.
Particles of precipitation develop and fall from the cloud as it continues to increase. The updraft is where the precipitation enters. As the particles fall, they pull the air with them. Downdrafts are the technical term for this sinking air.
Identification of mature stage thunderstorm can be done by-
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