Whiteout (weather) Whiteout (weather) Whiteout is a weather condition in which visibility and contrast are severely reduced by snow or sand. The horizon disappears from view while the sky and landscape appear featureless, leaving no points of visual reference by which to navigate. Whiteout has been defined as: "A condition of diffuse light when no shadows are cast, due to a continuous white cloud layer appearing to merge with the white snow surface. No surface irregularities of the snow are visible, but a dark object may be clearly seen. There is no visible horizon." A whiteout may be due simply to extremely
Antarctica Weather Danger Classification reaching Condition 2 based on windchill values of or below do happen. And reaching Condition 1 based on windchill values of or colder does occur. Antarctica Weather Danger Classification The weather in Antarctica can be highly variable, and weather conditions will oftentimes change dramatically in a short period of time. There are various classifications for describing weather conditions in Antarctica; restrictions given to workers during the different conditions vary by station and nation. An air temperature of or below would meet the criteria for Condition 2. And an air temperature of or colder would meet the criteria for Condition 1.