Answer and Explanation:
Lifting buildup level is the tallness at which relative moistness of an air package will be 100% when it will be cooled by adiabatic Lifting.
Since the environmental weight decline with stature, bundle of air extend and cools . In the event that air is cooled to its dew point temperature, at that point immersion happen and buildup started. So LCL will entirely rely upon stature.
Coming to level of free convection, at this height in this climate where temperature of condition decline quicker than most adiabatic pass pace of immersed air package at same level.Air bundle will extend because of diminishing weights and package will chill off. At immersion it will came to at LFC.
No we can't forecast with in next 4 hours since it is framed by ascending of crest of damp air in light of insecurity in air and this flimsiness can be brought about by cooling at the top or warming at base, Neither procedure make deviation from stable conditions in vertical temperature profile and aftereffect of that convection is principle procedure of vertical trade among lower and upper troposphere.