
Abstract: Personal observations made at the top of Mary’s Mountain OR and from other sources are reviewed and compared with the data seen in Picture 1.
One conclusion is that condensation nuclei, which are silicates (sand), are hygroscopic (form weak, relative to the strong attractions of atoms to each other in molecules, attractions with water molecules) and therefore cause cloud droplets to form, as the air temperature cools, well before the relative humidity of the environmental atmosphere becomes 100{154653b9ea5f83bbbf00f55de12e21cba2da5b4b158a426ee0e27ae0c1b44117}.