Today, we want to address the topic of Whiteout (weather), since this is a topic that has aroused great interest in today's society. Whiteout (weather) is a topic that has been present throughout history, and has been the subject of analysis and debate in numerous areas. In this article, we propose to explore in depth the various dimensions of Whiteout (weather), with the aim of providing our readers with a comprehensive and enriching vision of this topic. From its origins to its relevance today, including its implications in different aspects of daily life, we aim to offer a broad and complete perspective that allows us to better understand the importance and impact of Whiteout (weather) in our society.
Whiteout, white-out, or milky weather is a weather condition in which the contours and landmarks in a snow-covered zone become almost indistinguishable. It could be also applied when visibility and contours are greatly reduced by sand. The horizon disappears from view while the sky and landscape appear featureless, leaving no points of visual reference by which to navigate; there is absence of shadows because the light arrives in equal measure from all possible directions. 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 heavy snowfall rates as seen in lake effect conditions, or to other factors such as diffuse lighting from overcast clouds, mist or fog, or a background of snow. A person traveling in a true whiteout is at significant risk of becoming completely disoriented and losing their way, even in familiar surroundings. Motorists typically have to stop their cars where they are, as the road is impossible to see. Normal snowfalls and blizzards, where snow is falling at 3 or 5 centimeters per hour (1 or 2 in/h), or where the relief visibility is not clear yet having a clear field of view for over 9 meters (30 ft), are often incorrectly called whiteouts.
There are three different forms of a whiteout:
A whiteout should not be confused with flat-light. Whilst there are similarities, both the causes and effects are different.
A whiteout is a reduction and scattering of sunlight.[better source needed]
Flat-light is a diffusion of sunlight.[better source needed]
Whiteout conditions pose threats to mountain climbers, skiers, aviation, and mobile ground traffic. Motorists, especially those on large high-speed routes, are also at risk. There have been many major multiple-vehicle collisions associated with whiteout conditions. One forward motorist may come to a complete stop when they cannot see the road, while the motorist behind is still moving.
Local, short-duration whiteout conditions can be created artificially in the vicinity of airports and helipads due to aircraft operations. Snow on the ground can be stirred up by helicopter rotor down-wash or airplane jet blast, presenting hazards to both aircraft and bystanders on the ground.