A white cloud of condensing water vapor that indicates steam generated from water particles applied during a fire fighting operation is losing heat and has fallen to a temperature below 212oF
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}