Glaze[1] or glaze ice, also called glazed frost or verglas,[2][3] is a smooth, transparent and homogeneous ice coating occurring when freezing rain or drizzle hits a surface.[4] It is similar in appearance to clear ice, which forms from supercooled water droplets. It is a relatively common occurrence in temperate climates in the winter when precipitation forms in warm air aloft and falls into below-freezing temperature at the surface.