a light feathery deposit of ice caused by the condensation of water vapour directly in the crystalline form, on terrestrial objects whose temperatures are below freezing, the process being the same by which dew is formed, except that the latter occurs only when the temperature of the bedewed object is above freezing
The reporting will include the cause (drought, storm, frost, hail, etc.) the observed damage (foliage loss, breakage or dying of branches or new shoots, etc.) and an estimate of the period in which the event took place.