Height of base: 1,200 to 7,000 ft Colour: Grey or white, generally with shading. Shape: Either patches or a sheet of rounded elements but may also appear as an undulating layer (a layer than waves up and down). When viewed from the ground, the size of individual elements will have an apparent width of more than the width of 3 fingers at arm's length. Other features: May produce light rain or snow. Sometimes the cloud may result from the spreading out of cumulus, giving a light shower.