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White WeatherWhite weather is mostly winter weather - ice, snow, whiteouts. Although summer may have some fluffy white clouds....
Ice is the solid form of water. The phase transition occurs when liquid water is cooled below 0 °C (273 K, 32 °F) at standard atmospheric pressure. Ice can be formed at higher temperatures in pressurized environments, and water will remain a liquid or gas until -30 °C at lower pressures. Ice formed at high pressure has a different crystal structure and density than ordinary ice. Snow, a form of precipitation, is a crystalline form of water ice, consisting of a multitude of snowflakes. Since it is composed of small rough particles, it has an open and therefore soft structure, unless packed by external pressure. Very light snow falling is called flurries or just a flurry. A snow day is a day on which school or other services are cancelled owing to unusually heavy snowfall. In areas that normally have very little snow, this may occur even with light accumulation — something often made fun of by those people used to colder climates, where streets would remain passable given the same amount of snow. Whiteout is a weather condition in which visibility is reduced by snow and diffuse lighting from overcast clouds. Cloud is a visible mass of condensed water droplets or ice crystals suspended in the atmosphere above Earth's surface. The condensing water vapor forms small droplets of water (typically 0.01 mm) or ice crystals that, when surrounded with billions of other droplets or crystals, are visible as clouds. Clouds reflect all visible wavelengths of light equally and are thus white, but they can appear grey or even black if they are so thick or dense that sunlight cannot pass through.
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