Thermals are sometimes indicated because of the presence of noticeable isolated cumulus clouds at the highest with the thermal. Cumulus clouds are shaped by the growing air in the thermal since it ascends and cools, right until the h2o vapor in the air begins to condense into noticeable droplets. https://zanevmeti.blogprodesign.com/56978176/5-simple-techniques-for-difference-between-thermal-shock-and-cycling