A thin, transparent layer of ice on road or ground surfaces, nearly invisible and extremely hazardous.
phenomenaWhat is Black Ice?
Black ice forms when surface temperatures drop below freezing while moisture is present. It is called black because it is transparent, allowing the dark road surface to show through. In Southeast Asia, black ice is only a concern at high elevations in the northern mountains (Sapa, Shan State highlands, northern Laos) during winter cold snaps.
Key points
- A thin, transparent layer of ice on road or ground surfaces, nearly invisible and extremely hazardous.
- Category: phenomena
Related terms
See also: black-ice is connected to other weather concepts. Browse the full glossary for related definitions.