Text Box:    The elevation of the cloud base on  the windward side is h » 1000 m.  Why?  What would happen to the cloud-base elevation if the RH at the mountain base increased? Text Box:  Leeward Side      Notice that at the base the temperature is warmer  than on the windward side.  Why?      The base dewpoint is lower than on the windward  side, i.e., the air is drier.  Why?       Hence the base RH is lower than on the windward  side. Text Box: Windward Side